Community discussions

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by IPANetEngineer
Mon Sep 02, 2013 10:06 pm
Forum: Beginner Basics
Topic: OSPF DEFAULT ROUTE
Replies: 5
Views: 1059

Re: OSPF DEFAULT ROUTE

My question would be why do you need multiple default routes? Do you have more than one Internet exit point? If not, then one default is probably all you need and specifically advertise the other subnets and networks.

A network drawing would be helpful in this case...
by IPANetEngineer
Mon Sep 02, 2013 9:41 pm
Forum: Forwarding Protocols
Topic: append-bgp-communities and 32 bit ASN
Replies: 8
Views: 3855

Re: append-bgp-communities and 32 bit ASN

If you have verified the prefixes are being advertised to the peer, then you need to validate the route filters of the peer and see why the prefixes you expect to see are being blocked.
by IPANetEngineer
Mon Sep 02, 2013 9:39 pm
Forum: Forwarding Protocols
Topic: OSPF stub cost
Replies: 4
Views: 1410

Re: OSPF stub cost

The purpose of a stub area is to limit the size of the routing table when you have a spoke that has only one entry / exit point. The network segments you are turning into a stub have more than one path in / out. Another thing to consider, when you redistribute in OSPF, it spans all areas from a topo...
by IPANetEngineer
Sun Sep 01, 2013 6:07 pm
Forum: Forwarding Protocols
Topic: route ospf error -> Discarding packet: locally originated
Replies: 24
Views: 28457

Re: route ospf error -> Discarding packet: locally originate

Have you attempted to change the ospf network type or set static ospf neighbors? Setting a static neighbor will remove multicast from the mix and changing from broadcast to ptp will remove DR/BDR elections. I would be curious to see what RIP or BGP do over the same physical topology - might help you...
by IPANetEngineer
Sat Aug 31, 2013 11:52 pm
Forum: General
Topic: Admins please tell Can i use 2-3 km copper cable as antenna
Replies: 13
Views: 2137

Re: Admins please tell Can i use 2-3 km copper cable as ante

Speeds depend on a number of factors including the gauge of the copper plant, bridge taps, aircore vs jelly, etc. The number of pairs and type of binder they are in also makes a difference. Speeds over 20 Mbps are easily possible at 6000 - 9000 feet if using ADSL2+ annex for unidirectional traffic. ...
by IPANetEngineer
Sat Aug 31, 2013 9:19 pm
Forum: Forwarding Protocols
Topic: Multihoming bgp for load balancing
Replies: 6
Views: 4724

Re: Multihoming bgp for load balancing

I would recommend full tables if you have the horsepower to do it simply because ECMP is not natively available for BGP in RouterOS. There are some ways to script around it, but full tables solve that problem for the most part. I would leave AD alone and not apply a routing mark unless you can't tak...
by IPANetEngineer
Sat Aug 31, 2013 7:59 pm
Forum: Beginner Basics
Topic: Site-to-site VPN
Replies: 3
Views: 17787

Re: Site-to-site VPN

I would probably do an IPSEC site-to-site in transport mode and put an IPIP tunnel on top of it. Makes routing very easy and limits the number of SA pairings you have to put in the IPSEC config. There are many example configs in the Wiki: http://wiki.mikrotik.com/wiki/Manual:IP/IPsec#Site_to_Site_Ip...
by IPANetEngineer
Sat Aug 31, 2013 7:55 pm
Forum: Forwarding Protocols
Topic: append-bgp-communities and 32 bit ASN
Replies: 8
Views: 3855

Re: append-bgp-communities and 32 bit ASN

It's pretty easy actually, just advertise the networks and subnets that you want the customer/peer to learn from you. This can all be controlled with a route filter applied to the peer in the outbound direction. For example if you want a peer to learn the path only for the following /24 prefixes, th...
by IPANetEngineer
Sat Aug 31, 2013 7:44 pm
Forum: General
Topic: RB2011UAS-RM
Replies: 5
Views: 968

Re: RB2011UAS-RM

If you're familiar with netinstall, I would definitely go that route and try to install 6.2 to see if stability improves. I've had many strange issues solved with netinstall.

http://wiki.mikrotik.com/wiki/Manual:Netinstall
by IPANetEngineer
Sat Aug 31, 2013 2:36 am
Forum: Forwarding Protocols
Topic: append-bgp-communities and 32 bit ASN
Replies: 8
Views: 3855

Re: append-bgp-communities and 32 bit ASN

I'm not entirely sure I understand what you're asking - do you mean you want to become a transit AS between two or more of your peers?
by IPANetEngineer
Sat Aug 31, 2013 2:31 am
Forum: General
Topic: Admins please tell Can i use 2-3 km copper cable as antenna
Replies: 13
Views: 2137

Re: Admins please tell Can i use 2-3 km copper cable as ante

EFM (Ethernet in the First Mile) over SHDSL is the technology I would deploy at that distance with an available telco copper route. EFM uses copper pairs to make a synchronous Ethernet pipe. We have put many of these on copper service provider networks as a form of metro Ethernet and they work very ...
by IPANetEngineer
Fri Aug 30, 2013 2:44 am
Forum: Forwarding Protocols
Topic: append-bgp-communities and 32 bit ASN
Replies: 8
Views: 3855

Re: append-bgp-communities and 32 bit ASN

What you are looking for are BGP Extended Communities as defined in:

http://www.ietf.org/rfc/rfc4360.txt

In RouterOS this is implemented via route targets and applied to a route filter:

ros code

/routing filter
add action=accept chain=BGP-OUT set-route-targets=198408:1000
by IPANetEngineer
Thu Aug 29, 2013 7:13 am
Forum: Forwarding Protocols
Topic: Multihoming bgp for load balancing
Replies: 6
Views: 4724

Re: Multihoming bgp for load balancing

Be sure and substitute your ISP ASN numbers and peer IPs into this config, but here is a basic prepending filtering config that will do what you're looking for as far as advertisements to the provider BGP peer. /routing bgp network add network=170.84.28.0/24 synchronize=no add network=170.84.29.0/24...
by IPANetEngineer
Wed Aug 28, 2013 4:54 am
Forum: General
Topic: 6.2 on 1100Hx2 crashing after upgrade
Replies: 4
Views: 1124

Re: 6.2 on 1100Hx2 crashing after upgrade

Do ypu have console access? Sounds like a netinstall may be in order
by IPANetEngineer
Tue Aug 27, 2013 9:49 pm
Forum: Forwarding Protocols
Topic: Load balancing with BGP
Replies: 3
Views: 1102

Re: Load balancing with BGP

Which is more important to you latency or load? If load is more important, i would block the partial table and only take defaults on each so you can split traffic equally between them Once you have full tables on each, I would use local pref to divide the public routing table in half and prefer one ...
by IPANetEngineer
Tue Aug 27, 2013 7:04 pm
Forum: Forwarding Protocols
Topic: Load balancing with BGP
Replies: 3
Views: 1102

Re: Load balancing with BGP

Are you on provider assigned IP space or RIR independent such as ARIN or LACNIC?

Will you be taking a full table, partial table or default?
by IPANetEngineer
Tue Aug 27, 2013 2:27 am
Forum: RouterBOARD hardware
Topic: RouterBOARD naming
Replies: 47
Views: 25794

Re: RouterBOARD naming

Very nice...thanks for sharing
by IPANetEngineer
Tue Aug 27, 2013 2:25 am
Forum: Forwarding Protocols
Topic: Two or more route table with equal networks on Mikrotik
Replies: 4
Views: 1957

Re: Two or more route table with equal networks on Mikrotik

What kind of equipment is it on and how much traffic is flowing through the tunnels?
by IPANetEngineer
Tue Aug 27, 2013 12:58 am
Forum: Forwarding Protocols
Topic: Very strange issue with BGP and performance
Replies: 10
Views: 2104

Re: Very strange issue with BGP and performance

No problem...glad to help!
by IPANetEngineer
Mon Aug 26, 2013 11:07 pm
Forum: Beginner Basics
Topic: Changing Native VLAN between trunks
Replies: 3
Views: 8830

Re: Changing Native VLAN between trunks

There are two ways to solve this

1. Set the cisco switch to tag the native vlan - this is a global command

2. Change the native vlan on tje cisco switch to a vlan number you will never use

This same problem was solved in a dot1q thread recently. Ill see if I can dig it up and post it
by IPANetEngineer
Mon Aug 26, 2013 2:22 am
Forum: General
Topic: ROS image downloading broken
Replies: 2
Views: 500

Re: ROS image downloading broken

Broken for me too...just used it a few hours ago. :-(
by IPANetEngineer
Mon Aug 26, 2013 12:19 am
Forum: Wireless Networking
Topic: Customer wants WiFi but house is .....
Replies: 5
Views: 1421

Re: Customer wants WiFi but house is .....

If the insulation is strong enough to block RF between rooms, then you should be ok to use the same SSID across multiple APs. Most home users are fairly stationary in their WiFi usage patterns, but for the occasional movers, you could see issues as you transition from room to room. TCP based apps wi...
by IPANetEngineer
Sun Aug 25, 2013 11:56 pm
Forum: General
Topic: 2013 USA MUM in St Louis
Replies: 3
Views: 834

2013 USA MUM in St Louis

So who all is going from the forums? Count me in! :D
by IPANetEngineer
Sun Aug 25, 2013 7:23 pm
Forum: Beginner Basics
Topic: 802.1Q trunking
Replies: 28
Views: 12766

Re: 802.1Q trunking

Glad it worked for you....good luck! :D
by IPANetEngineer
Sun Aug 25, 2013 7:21 pm
Forum: Forwarding Protocols
Topic: different traffic/clients to different gateways+failover
Replies: 9
Views: 2409

Re: different traffic/clients to different gateways+failover

OSPF Cost would accomplish what you want and get the villages to take the default route nearest to them if you have routers at your towers/APs. But using OSPF cost to engineer traffic can get ugly quickly. On the upside however, it is relatively simple to configure. If you need more granular traffic...
by IPANetEngineer
Sun Aug 25, 2013 4:57 pm
Forum: General
Topic: Is this fiber compatible with Mikrotik SFP ?
Replies: 8
Views: 1806

Re: Is this fiber compatible with Mikrotik SFP ?

Then the one you listed second will be fine. Do you use longer runs of fiber?

The biggest advantage of SMF over MMF aside from the distance is the ability to use it over 40 Gbps and 100 Gbps links.
by IPANetEngineer
Sun Aug 25, 2013 3:46 pm
Forum: General
Topic: Is this fiber compatible with Mikrotik SFP ?
Replies: 8
Views: 1806

Re: Is this fiber compatible with Mikrotik SFP ?

Single mode fiber is fine for short distances as well as long. When in a data center, 10k SFP and SMF with LC connector will be fine and can be reused for a long haul if needed. The fiber itself doesn't make much difference in your case, its the sfp you put on the end. You don't want more than a 10 ...
by IPANetEngineer
Sun Aug 25, 2013 4:39 am
Forum: Beginner Basics
Topic: 802.1Q trunking
Replies: 28
Views: 12766

Re: 802.1Q trunking

Change your Cisco config to this:
vlan 999
 name native-secure-unused
!
interface FastEthernet0/12
 switchport trunk native vlan 999
 switchport trunk allowed vlan 21,30,40
 switchport mode trunk
!
interface Vlan21
 ip address 10.105.21.200 255.255.255.0
 no ip route-cache
!
no interface vlan99
by IPANetEngineer
Sun Aug 25, 2013 3:35 am
Forum: Beginner Basics
Topic: 802.1Q trunking
Replies: 28
Views: 12766

Re: 802.1Q trunking

Look at my previous post and change the native VLAN to 999 (or some other VLAN you will never use).

The problem you are having is that VLAN 21 is being sent untagged to the MikroTik and it is expecting it to be tagged.
by IPANetEngineer
Sun Aug 25, 2013 3:30 am
Forum: General
Topic: I can't access my ftp from inside ip to outside ip
Replies: 5
Views: 1981

Re: I can't access my ftp from inside ip to outside ip

Change the destination address on the forward rule to the Public IP instead of the internal IP
by IPANetEngineer
Sun Aug 25, 2013 12:28 am
Forum: General
Topic: Mikrotik POE - 12v/24v 500ma - What uses it?
Replies: 12
Views: 3940

Re: Mikrotik POE - 12v/24v 500ma - What uses it?

Just one :-) 24v and 500ma per port

http://routerboard.com/RB750UP
by IPANetEngineer
Sat Aug 24, 2013 11:46 pm
Forum: Forwarding Protocols
Topic: different traffic/clients to different gateways+failover
Replies: 9
Views: 2409

Re: different traffic/clients to different gateways+failover

I would begin to plan for BGP running on top of OSPF. BGP will give you many more options to influence the direction of traffic for customer subnets. OSPF will give you fast convergence of the underlying transit subnets.
by IPANetEngineer
Sat Aug 24, 2013 11:39 pm
Forum: Forwarding Protocols
Topic: CCR BGP Full Route Problem
Replies: 7
Views: 2836

Re: CCR BGP Full Route Problem

Are you taking a full table + default or just a full table? If you're redistributing a default route via OSPF and you didn't request a default with the full table, then you have no default to redistribute to the LAN side. You either need to request a default from the provider in addition to the full...
by IPANetEngineer
Sat Aug 24, 2013 11:30 pm
Forum: Beginner Basics
Topic: 802.1Q trunking
Replies: 28
Views: 12766

Re: 802.1Q trunking

Try this config on the Cisco side - it will tag all the VLANs you need. Also, you don't have any ports tied to the bridge-native. In order to send untagged traffic to the switch on this VLAN, a port on the MikroTik must be tied to that bridge. vlan 999 name unused-native ! interface FastEthernet0/12...
by IPANetEngineer
Sat Aug 24, 2013 7:33 pm
Forum: Beginner Basics
Topic: 802.1Q trunking
Replies: 28
Views: 12766

Re: 802.1Q trunking

Have you enabled tagging of the Native VLAN on the Cisco switch? Where are you taking the capture from?
by IPANetEngineer
Sat Aug 24, 2013 7:26 pm
Forum: Forwarding Protocols
Topic: Very strange issue with BGP and performance
Replies: 10
Views: 2104

Re: Very strange issue with BGP and performance

Your issue is probably duplex mismatch and not auto-negotiation. When you hardcode speed/duplex in 100 Mbps Ethernet, autonegotiation is automatically disabled. Both sides of a link must have auto-negotiation enabled for it to work. If one side is set to autoneg and the other is hard-coded, then the...
by IPANetEngineer
Sat Aug 24, 2013 5:38 am
Forum: Beginner Basics
Topic: 802.1Q trunking
Replies: 28
Views: 12766

Re: 802.1Q trunking

My first question would be - do you need an untagged native VLAN across the trunk? Cisco switches configured to trunk will detect a mismatch of the Native VLAN. Put the following config into the Cisco switch under the interface to correct the Native VLAN mismatch if 21 is the "native" on the MikroTi...
by IPANetEngineer
Sat Aug 24, 2013 4:40 am
Forum: General
Topic: CCR VLAN Routing Issue
Replies: 10
Views: 2199

Re: CCR VLAN Routing Issue

Tagging is usually pretty straightforward on an interface in RouterOS. Can you post an export of the config that didn't work?
by IPANetEngineer
Sat Aug 24, 2013 4:33 am
Forum: Beginner Basics
Topic: IP address
Replies: 4
Views: 814

Re: IP address

It is very easy to do this with the right switch. It's commonly called Layer 2 isolation. Cisco calls it Private VLANs.

Many RF solutions do this as well - it's a great way to use one subnet but isolate all the hosts from each other
by IPANetEngineer
Sat Aug 24, 2013 4:27 am
Forum: General
Topic: CCR VLAN Routing Issue
Replies: 10
Views: 2199

Re: CCR VLAN Routing Issue

Did you use an identical config to tag the VLAN in the other MikroTik?
by IPANetEngineer
Sat Aug 24, 2013 4:09 am
Forum: Forwarding Protocols
Topic: Very strange issue with BGP and performance
Replies: 10
Views: 2104

Re: Very strange issue with BGP and performance

What speed and duplex is the fiber converter set to?
by IPANetEngineer
Sat Aug 24, 2013 3:51 am
Forum: General
Topic: Looking for a mikrotik consultant
Replies: 3
Views: 800

Re: Looking for a mikrotik consultant

We have worked with BlueCoat in large environments
by IPANetEngineer
Fri Aug 23, 2013 4:06 am
Forum: Forwarding Protocols
Topic: Very strange issue with BGP and performance
Replies: 10
Views: 2104

Re: Very strange issue with BGP and performance

Post your config and code. I've pushed the 2011 series upwards of 900 Mbps of throughput as an edge MPLS device with 5.2x code.
by IPANetEngineer
Thu Aug 22, 2013 8:09 am
Forum: Forwarding Protocols
Topic: QinQ MTU
Replies: 11
Views: 8975

Re: QinQ MTU

Q-in-Q and S-tags are slightly different animals - As AlArenal pointed out, S-tags are used more commonly by carriers - q-in-q without an s-tag is liekly what you're looking for.

You will incur another 4 bytes of overhead in the L2 MTU since this is additional overhead in the Ethernet frame header.
by IPANetEngineer
Sun Aug 18, 2013 6:23 pm
Forum: Forwarding Protocols
Topic: Point-to-point (/31) addresses
Replies: 64
Views: 41527

Re: Point-to-point (/31) addresses

If they are RFC1918 addresses why do you want to do anything other than use a /30? Conservation of non-RFC1918 addresses is what drives people into /31 & /32 land usually..... Agreed....public Class A/B/C is the only reason I would mess with /32 and /31 routing. If you're using 1918 space only, the...
by IPANetEngineer
Sun Aug 18, 2013 6:18 pm
Forum: Forwarding Protocols
Topic: OSPF area range in another router
Replies: 6
Views: 1748

Re: OSPF area range in another router

One thing you might consider to alleviate the issue, is to stop routing at the edge and backhaul the customers at each location in a VLAN via VPLS to the PPPoE NAS/BRAS. That way you can maintain small routing tables at the edge for MPLS/OSPF and put the larger /32 table in a core router/NAS that ha...
by IPANetEngineer
Wed Aug 14, 2013 6:15 am
Forum: Beginner Basics
Topic: Auto Fail Over Option with Mikto TIk
Replies: 4
Views: 1346

Re: Auto Fail Over Option with Mikto TIk

There are many ways to do this...dual static routes with a gateway check is one of the easier ways. If the gateway check fails, the other default route becomes active.
by IPANetEngineer
Sat Aug 10, 2013 2:02 am
Forum: Forwarding Protocols
Topic: Point-to-point (/31) addresses
Replies: 64
Views: 41527

Re: Point-to-point (/31) addresses

Using it in my production network without problems. Of course, Only Mikrotik supports this. That's the only limitation Is this usable in production networks? Where's the catch? BR, M Routing a /32 via another /32 has been used for years in Telco DSL networks on a multitude of vendor equipment like ...
by IPANetEngineer
Sat Aug 10, 2013 1:57 am
Forum: General
Topic: Which way would you choose for starting WISP today?
Replies: 4
Views: 1061

Re: Which way would you choose for starting WISP today?

Auth: PPPoE with a RADIUS Manager

Network: OPSF/BGP/MPLS with VRF and TE riding on a tagged Layer 2 infrastructure

Equipment: Depends on bandwidth requirements but at least 2011 for core and 751G for the edge. MaxxWave also makes great RouterOS platforms.
by IPANetEngineer
Sat Aug 10, 2013 1:48 am
Forum: Beginner Basics
Topic: Hotspot Server
Replies: 3
Views: 747

Re: Hotspot Server

It relates to the number of IP addresses allowed per MAC address. 2 is the default I believe
by IPANetEngineer
Sat Aug 10, 2013 1:45 am
Forum: Forwarding Protocols
Topic: FailOver Bridge STP vs OSPF
Replies: 9
Views: 4003

Re: FailOver Bridge STP vs OSPF

What are the speeds of those backhauls?
by IPANetEngineer
Fri Aug 09, 2013 3:15 am
Forum: General
Topic: DHCP-RELAY problem after upgrade to 6.2
Replies: 1
Views: 463

Re: DHCP-RELAY problem after upgrade to 6.2

Have you tried disabling and re-enabling the config
by IPANetEngineer
Fri Aug 09, 2013 2:55 am
Forum: Forwarding Protocols
Topic: FailOver Bridge STP vs OSPF
Replies: 9
Views: 4003

Re: FailOver Bridge STP vs OSPF

Link ag is only beneficial if the links are of identical speed and latency. If they are different speeds, you can actually make it run slower than if they were independent.

If you do choose to test bonding, use LACP (802.3ad) as it will manage the bundling and traffic hashing
by IPANetEngineer
Wed Aug 07, 2013 8:27 pm
Forum: Forwarding Protocols
Topic: MPLS - Fast reroute. When?
Replies: 23
Views: 7294

Re: MPLS - Fast reroute. When?

BFD if your links will support it....lower OSPF/BGP timers if not.

BFD can get you to sub 50ms failover which is the carrier standard for voice (and not interrupt the call)
by IPANetEngineer
Wed Aug 07, 2013 4:17 am
Forum: Beginner Basics
Topic: Stopping of open proxy servers with Mikro Tik
Replies: 5
Views: 2480

Re: Stopping of open proxy servers with Mikro Tik

Have you validated this communication is legitimate? That would be my first step.

If it proves to be legit, are open proxy servers against your AUP? If so, throttle their bandwidth back to 64k until they comply with the AUP
by IPANetEngineer
Wed Aug 07, 2013 3:19 am
Forum: Forwarding Protocols
Topic: FailOver Bridge STP vs OSPF
Replies: 9
Views: 4003

Re: FailOver Bridge STP vs OSPF

You can tune the OSPF dead timer down to 2 to 3 seconds and rely solely on that, or ypu can couple that with BFD and get your failover time down into the milliseconds. BFD requires careful tuning to avoid constant route flapping but is well worth the effort.
by IPANetEngineer
Tue Aug 06, 2013 5:02 pm
Forum: Forwarding Protocols
Topic: two routers OSPF
Replies: 8
Views: 2633

Re: two routers OSPF

Another interesting note on this...I attempted to put the same address into a Cisco router and it won't even accept it on the interface:
R2(config-if)#ip address 253.25.0.5 255.255.255.252
Not a valid host address - 253.25.0.5
R2(config-if)# 
by IPANetEngineer
Tue Aug 06, 2013 1:05 am
Forum: Forwarding Protocols
Topic: two routers OSPF
Replies: 8
Views: 2633

Re: two routers OSPF

Change your IP addresses to a Class A, B or C range - I did a quick test of this on two MikroTik VMs and could not establish a neighbor adjacency - as soon as I switched to RFC 1918 space (192.168.0.0/30) the neighbors immediately came up. The IP addresses you are using are in the Class E - Experime...
by IPANetEngineer
Tue Aug 06, 2013 12:31 am
Forum: Forwarding Protocols
Topic: FailOver Bridge STP vs OSPF
Replies: 9
Views: 4003

Re: FailOver Bridge STP vs OSPF

RSTP is really designed more for loop prevention than selecting a forwarding path. It can be configured to do so, but OSPF is really better suited to select the best path between the two.

Unless you understand spanning tree extremely well, I would recommend against tuning spanning tree cost
by IPANetEngineer
Mon Aug 05, 2013 7:50 pm
Forum: Forwarding Protocols
Topic: two routers OSPF
Replies: 8
Views: 2633

Re: two routers OSPF

I'll take a look at the config, but here are the most common OSPF neighbor issues: Duplicate router ID OSPF Network type mismatch MTU Mismatch Multicast for ospf (224.0.0.5 and 224.0.0.6) not permitted Network subnets advertised don't match on either side of the adjacency Mismatched hello/dead timer...
by IPANetEngineer
Sat Aug 03, 2013 1:41 am
Forum: Beginner Basics
Topic: Internet speed test
Replies: 4
Views: 14891

Re: Internet speed test

speedtest.net or speedtest.comcast.net.

Most DSL providers have their own speedtest page
by IPANetEngineer
Fri Aug 02, 2013 11:45 pm
Forum: Forwarding Protocols
Topic: Router Specifications
Replies: 4
Views: 1523

Re: Router Specifications

The only things I saw that I was unsure about were the authentication proxies - I haven't done those so I can't tell you either way, but there is a wealth of customization that can be done via scripting and VMs so just about anything is possible if you have time to tinker.
by IPANetEngineer
Fri Aug 02, 2013 7:05 pm
Forum: Forwarding Protocols
Topic: Router Specifications
Replies: 4
Views: 1523

Re: Router Specifications

Hi team, please i need check if any Mikrotik router complies with the following: ZBFW (Zone-Based Policy Firewall) Zone Based Firewall (ZBFW) usability and manageability features Luis This is the big one that jumps out at me...MikroTik has a great firewall but it is not Zone Based - there have been...
by IPANetEngineer
Fri Aug 02, 2013 6:30 pm
Forum: General
Topic: v6.2 released
Replies: 247
Views: 90228

Re: v6.2 released

Sounds similar to Cisco's CEF or the earlier fast switching. ASIC based hardware forwarding? It would be nice :-)
by IPANetEngineer
Fri Aug 02, 2013 6:17 pm
Forum: Forwarding Protocols
Topic: BGP peer advice
Replies: 4
Views: 1439

Re: BGP peer advice

Because of the distance involved, I might look at putting some QoS rules in to ensure the iBGP link always had priority. If the LAN becomes congested and the peering drops, it could cause interruptions in service.
by IPANetEngineer
Fri Aug 02, 2013 5:49 pm
Forum: Forwarding Protocols
Topic: Multicast Paging with Cisco IP Phone between 2 subnets
Replies: 3
Views: 1545

Re: Multicast Paging with Cisco IP Phone between 2 subnets

You will need an IGP or static routes so the multicast subnets are reachable and you will need to enable PIM on the interface of the multicast LAN segments

http://wiki.mikrotik.com/wiki/Manual:Mu ... ed_example
by IPANetEngineer
Fri Aug 02, 2013 5:39 pm
Forum: Beginner Basics
Topic: Slow DL Rate from ISP - RB1100Hx2
Replies: 4
Views: 879

Re: Slow DL Rate from ISP - RB1100Hx2

What speed is the link between the 1100 and the switch? Is speed/duplex hard coded on either side or auto-negotiated? Check to ensure there isn't a duplex mismatch which can result in one side falling back to half-duplex. This is more common in 100 Mbps links as the fallback for Gigabit Ethernet is ...
by IPANetEngineer
Fri Aug 02, 2013 4:38 pm
Forum: Forwarding Protocols
Topic: BGP peer advice
Replies: 4
Views: 1439

Re: BGP peer advise

I always like to use a dedicated link wherever possible for several reasons: 1) If the better route is on a different router than the one traffic was destined for, then you may end up sending the same traffic through the switch twice 2) Redundancy - the more redundant paths you have the better It is...
by IPANetEngineer
Fri Aug 02, 2013 4:34 pm
Forum: Forwarding Protocols
Topic: BGP filter
Replies: 1
Views: 855

Re: BGP filter

Take a look at POSIX REGEX for matching on an AS PATH. The underscore will match any AS in the path and the $ signals the end of the string. Haven't tried this particular REGEX in Mikrotik, but it is valid POSIX and works in Cisco with no issue - let us know how it goes! chain=BGP-IN bgp-as-path="_9...
by IPANetEngineer
Fri Aug 02, 2013 4:09 pm
Forum: Beginner Basics
Topic: Setting IP
Replies: 2
Views: 575

Re: Setting IP

Do you have a VLAN capable switch? If so, then take a look at setting up a dot1q trunk between the switch and your MikroTik. Each floor will have a VLAN/subnet and the Mikrotik will route between them or out to the Internet. Take a look at this article: http://wiki.mikrotik.com/wiki/Manual:Interface...
by IPANetEngineer
Fri Aug 02, 2013 4:03 pm
Forum: Beginner Basics
Topic: IGMP Proxy - how to setup Two SXT Lite2 in bridge for IPTV
Replies: 5
Views: 1765

Re: IGMP Proxy - how to setup Two SXT Lite2 in bridge for IP

Is it the same subnet in both locations?

Personally, I would route the multicast traffic for IGMP/IPTV.
by IPANetEngineer
Fri Aug 02, 2013 3:58 pm
Forum: General
Topic: Infos needed before jumping RouterOS wagon (BGP, bandwidth)
Replies: 8
Views: 1529

Re: Infos needed before jumping RouterOS wagon (BGP, bandwid

We do a large amount of Service Provider/Telco/Carrier design and implementation. Baltic Networks makes RouterOS based routers that are well suited to your needs - at least one of them has roughly 10 Gbps of forwarding capacity. http://www.balticnetworks.com/manufacturers/maxxwave/routermaxx-routers...
by IPANetEngineer
Fri Aug 02, 2013 3:53 pm
Forum: Forwarding Protocols
Topic: Advertise with low or high distance /OSPF and iBGP/
Replies: 3
Views: 2106

Re: Advertise with low or high distance /OSPF and iBGP/

You can tune both OSPF and BGP for preferential routing.

OSPF uses COST and LSA types to determine the best route whereas BGP uses a best path algorithm along with attributes you can modify to select the best route.
by IPANetEngineer
Fri Aug 02, 2013 3:51 pm
Forum: Forwarding Protocols
Topic: First eBGP and problems with some routes
Replies: 1
Views: 529

Re: First eBGP and problems with some routes

1) Do a traceroute and see which hops are within your providers network. 2) Ping the IP of the provider BGP peering router to see if there is any packet loss 3) continue pinging each hop in the traceroute starting with the nearest hops to determine where the packet loss is coming from. If the packet...
by IPANetEngineer
Fri Aug 02, 2013 3:46 pm
Forum: Forwarding Protocols
Topic: RB1100AH as BGP Gateway?
Replies: 4
Views: 1277

Re: RB1100AH as BGP Gateway?

The 1100AH is perfectly fine for a BGP peering router. If you aren't going to have more than one link, then take a default and filter out the rest of the routes.
by IPANetEngineer
Tue Jul 16, 2013 1:17 am
Forum: Forwarding Protocols
Topic: VPLS one end up, one end down.. not working
Replies: 6
Views: 3028

Re: VPLS one end up, one end down.. not working

Few things

Are the remote peer adresses routable to each other and have you verified with pings?
Have you configured and enabled LDP?
Is the MPLS MTU the same on all devices?
by IPANetEngineer
Sun Jul 14, 2013 8:41 pm
Forum: Beginner Basics
Topic: IPTV RB951G-2HnD
Replies: 8
Views: 4692

Re: IPTV RB951G-2HnD

Is there a specific reason you don't want to route multicast and IGMP? Routed multicast is a best practice design for most IPTV networks - IGMP and IGMP proxy both work well in this setup.
by IPANetEngineer
Sun Jul 14, 2013 2:02 am
Forum: Beginner Basics
Topic: RB1100AH + core router + vlan switch
Replies: 2
Views: 720

Re: RB1100AH + core router + vlan switch

If you need a tagged vlan to connect to a switch, then create a vlan interface and assign it to a physical interface. Assign whatever IP address you need to the vlan interface and then run the DHCP setup wizard
by IPANetEngineer
Fri Jul 12, 2013 9:48 pm
Forum: Forwarding Protocols
Topic: cease: prefix limit reached
Replies: 1
Views: 2747

Re: cease: prefix limit reached

Carriers can impose a limit on the number of prefixes advertised on a peering. This is common in Cisco and Juniper - Mikrotik also has this feature. If you exceed the max number of prefixes allowed to be advertised, then the peering router can either warn you or drop the peering. This sounds like th...
by IPANetEngineer
Wed Jul 10, 2013 3:23 am
Forum: RouterBOARD hardware
Topic: CLOUD CORE ROUTER
Replies: 1374
Views: 1017066

Re: CLOUD CORE ROUTER

Cisco has its fair share of bugs that cause hiccups and downtime. The only difference is that Ciscos bugs tend to be more frequent with advanced features and not mainstream routing/switching. Mikrotik bugs more commonly show up in mainstream routing/switching

At least thats been my experience...ymmv
by IPANetEngineer
Tue Jul 09, 2013 9:25 pm
Forum: General
Topic: ROS stop L3 forwarding for 2-3 minutes
Replies: 15
Views: 2109

Re: ROS stop L3 forwarding for 2-3 minutes

Post the routing table for the affected devices please
by IPANetEngineer
Tue Jul 09, 2013 4:36 am
Forum: Beginner Basics
Topic: IPv6 Tunnelling (solved)
Replies: 5
Views: 1928

Re: IPv6 Tunnelling

If you can ping google via IPv6 then your tunnel is working and routing properly. What IPv6 address are you getting on your client - I don't see a LAN side IPv6 address unless you are trying to bridge everything to the WAN interface.
by IPANetEngineer
Tue Jul 09, 2013 4:31 am
Forum: Forwarding Protocols
Topic: Core network on BGP x edge router(s) with OSPF = ?
Replies: 2
Views: 1380

Re: Core network on BGP x edge router(s) with OSPF = ?

Redistribute OSPF into BGP and Vice Versa on the edge router would be the simplest way and is commonly done. Having said that, redistribution can get very messy if you're not familiar with it - always redistribute/advertise using filters for specific networks to avoid catastrophic network failures. ...
by IPANetEngineer
Tue Jul 09, 2013 4:18 am
Forum: Forwarding Protocols
Topic: bonding+vpls mtu problem
Replies: 5
Views: 4275

Re: bonding+vpls mtu problem

MPLS MTU on ALL routers should be a minimum:

1526 -if using untagged VPLS
1530- if using tagged VPLS

That will allow you to pass a standard 1500 byte IP packet over the L2 handoff without having to adjust MSS
by IPANetEngineer
Tue Jul 09, 2013 4:09 am
Forum: Forwarding Protocols
Topic: IS-IS
Replies: 44
Views: 13876

Re: IS-IS

Typically ISIS is used in larger provider networks as it scales a bit better when you start getting to networks that have thousands of routers. OSPF is perfectly capable of handling several thousand routers if designed properly. They both use the same SPF algorithm and are very similar. That said, b...
by IPANetEngineer
Tue Jul 09, 2013 4:02 am
Forum: Forwarding Protocols
Topic: Who is using MT MPLS in production
Replies: 13
Views: 3249

Re: Who is using MT MPLS in production

I have put MPLS in production on multiple service provider networks both WISP and traditional Fiber/Copper wireline providers. It works very well as a CE/PE router and can even act as a core router in smaller provider networks that don't need bandwidth beyond 20 - 40 Gbps or so (which would be about...
by IPANetEngineer
Tue Jul 09, 2013 3:54 am
Forum: Forwarding Protocols
Topic: MPLS / VPLS and TE Tunnels
Replies: 7
Views: 3638

Re: MPLS / VPLS and TE Tunnels

Post a diagram if you can.. Couple quick things 1. Check to ensure the loopbacks are advertised (i'm guessing you're running OSPF as the IGP) 2. Check your firewall rules to ensure LDP/OPSF traffic is permitted through for the new loopbacks If you can't ping from one new loopback sourced as the othe...
by IPANetEngineer
Tue Jul 09, 2013 3:48 am
Forum: Forwarding Protocols
Topic: BGP with 2 Peer
Replies: 5
Views: 4199

Re: BGP with 2 Peer

It depends on what direction you want to influence traffic... To prefer a link for inbound traffic use: - AS Path Prepending - Multi Exit Discriminator (MED) aka BGP "Metric" To prefer a link for outbound traffic use: - Local Preference - Weight - Next Hop One of the best way to manage traffic is to...
by IPANetEngineer
Sat Jun 29, 2013 3:26 pm
Forum: General
Topic: 【Bug】6.xx Queue tree Bug
Replies: 38
Views: 14877

Re: 【Bug】6.xx Queue tree Bug

Just experienced a crash on 6.1 x86 while disabling/re-enabling queue trees. When I re-enabled the queue tree, the router stopped forwarding traffic and ended up rebooting itself. It came back after about 5 minutes with no user intervention. This is on a MaxxWave MW-RM1300-i7 router. I see a lot of ...
by IPANetEngineer
Sun Feb 24, 2013 9:03 pm
Forum: Beginner Basics
Topic: Issue with speed on RB751G-2HND
Replies: 16
Views: 3408

Re: Issue with speed on RB751G-2HND

All of your traffic is bridged under bridge interface LAN. This can very inefficient depending on the conditions.

Create a new subnet that isn't bridged and route the traffic to your WAN. I would also disable your bridge during this time.
by IPANetEngineer
Sun Feb 24, 2013 2:18 pm
Forum: Beginner Basics
Topic: Issue with speed on RB751G-2HND
Replies: 16
Views: 3408

Re: Issue with speed on RB751G-2HND

Post your config so we can take a look
by IPANetEngineer
Sun Feb 24, 2013 2:02 pm
Forum: Forwarding Protocols
Topic: bgp with communities - filter
Replies: 2
Views: 805

Re: bgp with communities - filter

If you're looking for generic filters, always filter RFC1918 private IP addresses inbound and outbound to a peer that advertises Internet routes
by IPANetEngineer
Sat Feb 23, 2013 11:40 pm
Forum: Wireless Networking
Topic: closed
Replies: 4
Views: 823

Re: pppoe server problem.

Are you using encrypted links? How are they accessing the other hosts via layer 2 broadcast?

Layer 2 Client isolation is the first thing I would look at. What kind of wireless gear are you using to connect them?
by IPANetEngineer
Sat Feb 23, 2013 7:15 pm
Forum: Beginner Basics
Topic: Issue with speed on RB751G-2HND
Replies: 16
Views: 3408

Re: Issue with speed on RB751G-2HND

What does your CPU utilization look like when you are at full throughput?

Try disabling all features except ip routing and see if the performance improves
by IPANetEngineer
Sat Feb 23, 2013 7:11 pm
Forum: General
Topic: How do I force 224.0.0.0/24 to cross routed interfaces?
Replies: 4
Views: 880

Re: How do I force 224.0.0.0/24 to cross routed interfaces?

Are you trying to route an IPv4 multicast subnet over a Link Local IPv6 network?
by IPANetEngineer
Sat Feb 23, 2013 6:05 pm
Forum: Beginner Basics
Topic: Issue with speed on RB751G-2HND
Replies: 16
Views: 3408

Re: Issue with speed on RB751G-2HND

Are the ethernet connections both to your modem and your PC set auto/auto on both sides? What code are you running? You can check for full duplex with the following command. Notice the full-duplex=yes/no field [admin@Falcor] > interface ethernet print detail Flags: X - disabled, R - running, S - sla...
by IPANetEngineer
Sat Feb 23, 2013 5:59 pm
Forum: Forwarding Protocols
Topic: GRE Tunnel on Dynamic IP address
Replies: 9
Views: 13539

Re: GRE Tunnel on Dynamic IP address

Check out this thread. You can probably modify the script referenced and use DynDNS to make it work:

http://forum.mikrotik.com/viewtopic.php ... +ip+script
by IPANetEngineer
Sat Feb 23, 2013 5:48 pm
Forum: Forwarding Protocols
Topic: VPLS 1500 MTU working then stops
Replies: 62
Views: 20116

Re: VPLS 1500 MTU working then stops

@Inssomniak Glad you finally got your MTUs sorted out. It's one of the trickest things to manage when you are building an MPLS based network. It took me several years to understand the role MTUs played across L2, MPLS and L3 when dealing with advanced transport mediums like Metro Ethernet, Wireless ...
by IPANetEngineer
Sat Feb 23, 2013 5:37 pm
Forum: Beginner Basics
Topic: Making a wireless home network connect to wireless router
Replies: 2
Views: 1464

Re: Making a wireless home network connect to wireless route

If your friend's router isn't sending you a default route, then you will need to add a default route to the gateway IP address on his WLAN.

So if his WLAN ip address is 192.168.1.1/24 then you would add this:

ros code

/ip route add dst-address=0.0.0.0/0 gateway=192.168.1.1
by IPANetEngineer
Sat Feb 23, 2013 5:30 pm
Forum: Beginner Basics
Topic: Issue with speed on RB751G-2HND
Replies: 16
Views: 3408

Re: Issue with speed on RB751G-2HND

Check to ensure that you don't have a duplex mismatch when connecting at 100Mbps. If you hard code your interface to 100Mbps Full Duplex and the other side is set to auto, then you will be running in half duplex which will cause significant throughput issues. Gigabit ethernet doesn't fallback to hal...
by IPANetEngineer
Sat Feb 23, 2013 5:18 pm
Forum: Forwarding Protocols
Topic: OSPF Will not form full adjacency
Replies: 9
Views: 4296

Re: OSPF Will not form full adjacency

Other multicast streams in the environment (especially if they use the same address) or blocking of multicast inadvertently can tear down OSPF. I've seen both happen numerous times.

Are you using switches that are capable of IGMP snooping?
by IPANetEngineer
Sat Feb 23, 2013 5:15 pm
Forum: Forwarding Protocols
Topic: MPLS only work one way
Replies: 2
Views: 985

Re: MPLS only work one way

1) Check your routes and ensure that you aren't summarizing routes
2) Post a diagram with subnets
3) Check that all (L2/MPLS) MTUs are at least capable of 1526 for untagged vpls and 1530 for tagged VPLS
4) Check to ensure that LDP is enabled and has built a label switched path through the network
by IPANetEngineer
Sat Feb 23, 2013 5:09 pm
Forum: Forwarding Protocols
Topic: Migrating to MPLS, hire help...
Replies: 4
Views: 1357

Re: Migrating to MPLS, hire help...

We operate and design carrier grade MPLS networks on wireless and wireline.

We have 10+ years of experience in building MPLS/OPSF/BGP networks to carry voice, video and data for CLECs, ILECs, Enterprises and Data Centers

Our contact info is in the signature
by IPANetEngineer
Sat Feb 23, 2013 5:04 pm
Forum: Forwarding Protocols
Topic: Cisco is opening up its EIGRP as open standard
Replies: 4
Views: 2279

Re: Cisco is opening up its EIGRP as open standard

I was very excited about this until I read that they won't be releasing advanced features like stub areas. It will still be much better than redistributing, and i'm very excited about the prospect of MikroTik implementing it in the future. Good article about it here: http://packetpushers.net/why-is-...
by IPANetEngineer
Sun Feb 03, 2013 8:00 pm
Forum: Forwarding Protocols
Topic: MPLS latency.
Replies: 11
Views: 4658

Re: MPLS latency.

If you want to pass a 1500 byte packet without fragmentation over mpls:

1526 is the minimum mpls mtu for untagged vpls

1530 is the minimum mpls mtu for tagged vpls

All L2 mtus in the path must be equal to or higher than the mpls mtu
by IPANetEngineer
Sun Feb 03, 2013 4:18 am
Forum: Forwarding Protocols
Topic: MPLS latency.
Replies: 11
Views: 4658

Re: MPLS latency.

MPLS is usually faster and more efficient because the router only has to read an 8 byte tag to forward instead of a 20 byte IP header.

What kind of links are connecting the routers?
by IPANetEngineer
Sun Feb 03, 2013 2:38 am
Forum: Forwarding Protocols
Topic: Mikrotik MPLS = Cisco MPLS???
Replies: 8
Views: 3208

Re: Mikrotik MPLS = Cisco MPLS???

Yes MPLS is an open standard and can be used with any Cisco router that supports LDP - which is just about all MPLS capable Cisco routers.

Ive used mikrotik routers on a multi state carrier mpls network with no issues
by IPANetEngineer
Sun Feb 03, 2013 2:36 am
Forum: General
Topic: problem with facebook
Replies: 6
Views: 1027

Re: problem with facebook

Sounds like an MTU issue. What mtu are you using for pppoe clients?
by IPANetEngineer
Sat Feb 02, 2013 6:46 am
Forum: Beginner Basics
Topic: Hundreds of VPN
Replies: 10
Views: 1587

Re: Hundreds of VPN

OSPF could be used in this scenario if you use multiple areas...best practice ospf design is to limit your areas to no more tham 50 routers. Also you might want to take a look at multicast over whatever tunnel you want to use as there sometimes tend to be limitations when tunneling multicast
by IPANetEngineer
Sat Feb 02, 2013 6:42 am
Forum: Beginner Basics
Topic: Cisco to Mikrotik OSPF
Replies: 9
Views: 8304

Re: Cisco to Mikrotik OSPF

Vlan trunking does affect the L2 mtu in the mikrotik world (decrements by 4 bytes) but its the Layer 3 IP mtu that has to match for OSPF to form an adjacency. Typically 1500 is a safe bet for IP mtu on ethernet based networks
by IPANetEngineer
Sat Feb 02, 2013 3:04 am
Forum: Beginner Basics
Topic: Cisco to Mikrotik OSPF
Replies: 9
Views: 8304

Re: Cisco to Mikrotik OSPF

Issue a 'debug ip ospf adj' on the cisco router amd it should clue you in on what you're missing.

MTU mismatch is a commonly overlooked problem as well as instance mismatch (cisco is zero by default)
by IPANetEngineer
Sat Feb 02, 2013 2:57 am
Forum: General
Topic: 2 x VDSL one router the same Gateway
Replies: 3
Views: 1074

Re: 2 x VDSL one router the same Gateway

What is the subnet mask on the IPs you get via PPPOE and what is the gateway?
by IPANetEngineer
Fri Jan 25, 2013 3:24 am
Forum: General
Topic: VPN between two identical subnets
Replies: 8
Views: 2073

Re: VPN between two identical subnets

This is a pretty common scenario...usually you will NAT one side only for traffic that is destined across the VPN. A few mangle rules should fix it up for you.
by IPANetEngineer
Fri Jan 25, 2013 2:43 am
Forum: Forwarding Protocols
Topic: MPLS tcp speed issues
Replies: 14
Views: 5328

Re: MPLS tcp speed issues

1530 is really the minimum MPLS mtu you want to set on an MPLS network if you want to use all of the ATOM feature set like EoMPLS and VPLS. It's needed to be able to hand off a 1500 byte segment to the edge
by IPANetEngineer
Wed Aug 22, 2012 2:13 am
Forum: General
Topic: IPTV via PPPOE
Replies: 5
Views: 4027

Re: IPTV via PPPOE

Few things to think about...this can be done but it's lot messier than using a dedicated VLAN 1) IPTV is complicated enough to get from the headend out to the core/distribution and last mile networks without adding the complexity of PPPoE. 2) Security - IPTV is typically redistributing protected con...
by IPANetEngineer
Wed Aug 22, 2012 2:03 am
Forum: Beginner Basics
Topic: Backup configuration in plaintext?
Replies: 5
Views: 9219

Re: Backup configuration in plaintext?

I'll have to keep that in mind...it hasn't given me any problems yet but i'll look for that if I do. Thanks!
by IPANetEngineer
Tue Aug 21, 2012 7:50 pm
Forum: General
Topic: Hotspot with IP allocation after Login
Replies: 3
Views: 747

Re: Hotspot with IP allocation after Login

Is there any reason why you wouldn't want to use a pool of Public IP addresses at the hotspot Gateway and then allocate private IP addresses to the users? NAT would take care of the public reachability to the Internet.
by IPANetEngineer
Tue Aug 21, 2012 7:00 pm
Forum: Beginner Basics
Topic: Backup configuration in plaintext?
Replies: 5
Views: 9219

Re: Backup configuration in plaintext?

If you're going to put it on another router, I would add the compact command in there as well.
/export file=backup-test compact
by IPANetEngineer
Tue Aug 21, 2012 6:56 pm
Forum: General
Topic: Mikrotik STP and RSTP on bridges
Replies: 2
Views: 7590

Re: Mikrotik STP and RSTP on bridges

1) What are the bridge priorities on the Cisco and the Mikrotik?
2) post the output of show spanning-tree vlan <vland-id> on the cisco for the VLANs in question.
3) how many redundant links are there between the devices?
by IPANetEngineer
Tue Aug 21, 2012 6:20 am
Forum: Forwarding Protocols
Topic: Policy Based Routing
Replies: 4
Views: 1409

Re: Policy Based Routing

Can you post your routing table and a compact export of your mangle rules?
by IPANetEngineer
Tue Aug 21, 2012 6:13 am
Forum: General
Topic: PPPOE issue with adsl
Replies: 3
Views: 2096

Re: PPPOE issue with adsl

I would verify all settings are identical from your previous PPPoE session in the modem. I'm guessing something is set in the Mikrotik that wasn't in the modem. I don't see anything definitive, but two things stand out 1) MTU - The BRAS is wanting to negotiate to 1492 and your PPPoE client is asking...
by IPANetEngineer
Sun Aug 19, 2012 6:20 pm
Forum: Forwarding Protocols
Topic: VPLS requires reset after upstream circuit failure.
Replies: 4
Views: 1600

Re: VPLS requires reset after upstream circuit failure.

Did the IGP routing adacencies reestablish properly and were you able to ping the far end IP for the VPLS tunnel?

Also, did the MTU possibly change somewhere in the middle?
by IPANetEngineer
Sun Aug 19, 2012 6:09 pm
Forum: General
Topic: VLAN Redundancy
Replies: 5
Views: 1275

Re: VLAN Redundancy

It sounds like you need a true switch in the network and not a bridging solution. Depending on how critical this is, you probably need to put in a piece of equipment that is less of a single point of failure. I would look at a switch that has redundant power supplies and or processors. If a single p...
by IPANetEngineer
Sun Aug 19, 2012 1:39 am
Forum: General
Topic: failover between to connections
Replies: 2
Views: 546

Re: failover between to connections

OSPF would be one of the better ways to solve this....

1) Deploy a /30 or /29 subnet over the wireless bridge
2) Deploy a /30 or /29 subnet over the leased line

Configure OSPF for both subnets on both ends. Do a forum or wiki search on how to configure OSPF.
by IPANetEngineer
Sun Aug 19, 2012 1:35 am
Forum: Beginner Basics
Topic: Is Vlans the answer or is there an easier way?
Replies: 18
Views: 3038

Re: Is Vlans the answer or is there an easier way?

VLANs are used when you want to deploy separate services/subnets out of the same physical LAN segment. VLANs (At least the way MikroTik implements them) do not provide security between LAN segments as they typically meet at a routing point somewhere and will be able to communicate via Layer 3. It so...
by IPANetEngineer
Sat Aug 18, 2012 8:28 pm
Forum: General
Topic: Implementing qos
Replies: 2
Views: 569

Re: Implementing qos

What VoIP protocol are you using?

Identify the inbound traffic with a mangle rule and then set up a queue to prioritize it. Take a look at the MikroTik wiki for help on how to do mangle rules and queues.
by IPANetEngineer
Sat Aug 18, 2012 3:37 am
Forum: Beginner Basics
Topic: ADLS configuration and internet in lan
Replies: 3
Views: 1592

Re: ADLS configuration and internet in lan

You probably don't need an assigned IP address for the PPPoE client. Your ISP will provide this dynamically when the PPPoE session terminates . along the same lines, all the IPs you have mentioned are private addresses - you must have a public address to be able to reach the Internet.
by IPANetEngineer
Sat Aug 18, 2012 2:55 am
Forum: Forwarding Protocols
Topic: RIP in ring network design topology. What would happen if?
Replies: 6
Views: 2742

Re: RIP in ring network design topology. What would happen i

RIP is usually never a good idea to put on a network. It has been obsolete for over 15 years. The last revision of RIP for IPv4 occured in 1993 and it was standardized in 1998. 1) It converges much slower than OSPF 2) It is limited to 15 hops 3) It must send out the entire routing table at intervals...
by IPANetEngineer
Sat Aug 18, 2012 2:44 am
Forum: General
Topic: IPTV via PPPOE
Replies: 5
Views: 4027

Re: IPTV via PPPOE

Is there a reason why you need PPPoE for IPTV?

PPPoE requires a Layer-2 path to the BRAS, assuming you have that, it would be better to serve the IPTV out of a VLAN in that physical segment than try to use PPPoE. It will make QoS easier as well.
by IPANetEngineer
Fri Aug 17, 2012 3:35 pm
Forum: General
Topic: linksys wrt120n PPPoE client issue
Replies: 5
Views: 1716

Re: linksys wrt120n PPPoE client issue

Two questions:

1) Are you injecting routes when the PPPoE session is established
2) Are you authenticating locally or via RADIUS

Dynamically added routes in PPPoE can cause a lot of problems if they aren't correct.
by IPANetEngineer
Thu Aug 16, 2012 6:15 am
Forum: Forwarding Protocols
Topic: VPLS 1500 MTU working then stops
Replies: 62
Views: 20116

Re: VPLS 1500 MTU working then stops

You might want to contact Baltic networks and ask them about the RouterMAXX line in regard to this specific issue. I know that I have implemented MPLS and L2 MTUs above 1504 without any issues on that gear, but I don't think i've tried a higher IP MTU.
by IPANetEngineer
Thu Aug 16, 2012 6:12 am
Forum: General
Topic: Route Public IPs to another network
Replies: 1
Views: 825

Re: Route Public IPs to another network

You will probably have to build a VPN between the two networks to make that work... A /24 is the smallest you can usually advertise into the global BGP table and that's only if you have your own AS and independent IP address space. The LISP protocol would be a way to do it but I don't think MikroTik...
by IPANetEngineer
Thu Aug 16, 2012 6:08 am
Forum: General
Topic: help need VOIP QOS
Replies: 3
Views: 631

Re: help need VOIP QOS

If you don't understand the QOS topic then mangle rules by themselves aren't going to help - QoS is pretty complicated. What is it that you don't understand? What problem are you trying to solve?
by IPANetEngineer
Thu Aug 16, 2012 4:11 am
Forum: General
Topic: help need VOIP QOS
Replies: 3
Views: 631

Re: help need VOIP QOS

That's a pretty tall order for a forum, but you might take a look at this :)

http://forum.mikrotik.com/viewtopic.php?f=2&t=62958
by IPANetEngineer
Thu Aug 16, 2012 4:01 am
Forum: General
Topic: Central DHCP Server
Replies: 2
Views: 870

Re: Central DHCP Server

DHCP relay is what you are looking for if you want to isolate your layer 2 domains and still have a central DHCP server. Most large networks that rely on DHCP use DHCP relay at one or several key points throughout the network.

http://wiki.mikrotik.com/wiki/Manual:IP/DHCP_Relay
by IPANetEngineer
Thu Aug 16, 2012 3:58 am
Forum: Forwarding Protocols
Topic: VPLS 1500 MTU working then stops
Replies: 62
Views: 20116

Re: VPLS 1500 MTU working then stops

Do you have a link for the issue with raising the MTU and that cardset?

The L2MTU on that particular router can be set to 9214 and is what shows up in the router as the L2MTU. I'd have to do some further testing on that platform as I don't have one in front of me but have worked on them before.
by IPANetEngineer
Wed Aug 15, 2012 11:13 pm
Forum: Forwarding Protocols
Topic: VPLS 1500 MTU working then stops
Replies: 62
Views: 20116

Re: VPLS 1500 MTU working then stops

That's too bad about your network card. MPLS is very dependent on MTU and is often the source of much heartache in MPLS networks. To do PPPoE you'll have to account for another 8 bytes of MTU overhead IIRC (2 bytes PP and 6 bytes PPPoE) Baltic networks sells a MIkroTik router that is a multi-core an...
by IPANetEngineer
Tue Aug 14, 2012 7:18 am
Forum: Forwarding Protocols
Topic: VPLS 1500 MTU working then stops
Replies: 62
Views: 20116

Re: VPLS 1500 MTU working then stops

An MPLS MTU of 1512 means that your router won't pass any more than 1512 bytes (including headers via MPLS) So if you take 1512 and subtract the 26 bytes needed for VPLS, that leaves you with a payload of 1486 (1482 if you're using dot1q tags) which is 14 bytes short of being able to carry a standar...
by IPANetEngineer
Tue Aug 14, 2012 3:59 am
Forum: Forwarding Protocols
Topic: VPLS 1500 MTU working then stops
Replies: 62
Views: 20116

Re: VPLS 1500 MTU working then stops

saw this post and thought I would throw my two pesos in as I do a lot of MPLS work in Cisco and Mikrotik. Not sure if any of you guys have tried this, but if you want to do EoMPLS/VPLS and pass a 1500 byte IP packet between the two connected hosts on the CE routers, then the MPLS MTU (and hence the ...
by IPANetEngineer
Tue Aug 14, 2012 3:35 am
Forum: Forwarding Protocols
Topic: OSPF routes not installing with correct metric
Replies: 2
Views: 1640

Re: OSPF routes not installing with correct metric

Have you tried artificially adjusting the cost of the link on either side to influence which route you want to be active? You could also look at equal cost multipath - Cisco does this by default for up to 4 equal cost/equal AD routes but it must be manually configured in the MikroTik world. Link to ...
by IPANetEngineer
Sat Aug 11, 2012 5:51 pm
Forum: General
Topic: RB2011 Routing speed
Replies: 13
Views: 6381

Re: RB2011 Routing speed

I've gotten the RB2011 to route up to about 900 Mbps (one direction only) between the SFP port and gigabit ports 2-5 and when I change it to switched mode it will get almost a gigabit in one direction or 500 Mbps up/down. This is with MPLS enabled which does optimize routing a little bit.
by IPANetEngineer
Sat Aug 11, 2012 5:33 pm
Forum: Forwarding Protocols
Topic: OSPF: Is it possible to originate a default route?
Replies: 7
Views: 3758

Re: OSPF: Is it possible to originate a default route?

Does the default route you are trying to redistribute show up in the LSAs for OSPF? If it is in the LSAs but not in the routing table, then something is preventing it from becoming the best route for network 0.0.0.0/0 -likely a metric. Can you post the LSAs and the routing table for one of the route...
by IPANetEngineer
Fri Aug 10, 2012 3:36 pm
Forum: Forwarding Protocols
Topic: MPLS Help
Replies: 2
Views: 926

Re: MPLS Help

You can build MPLS over a PtMP, PtP or Broadcast network segment on wired and most wireless networks. What kind of wireless link are you trying to build it over?
by IPANetEngineer
Fri Aug 10, 2012 7:10 am
Forum: Forwarding Protocols
Topic: OSPF: Is it possible to originate a default route?
Replies: 7
Views: 3758

Re: OSPF: Is it possible to originate a default route?

When you originate a default route in OSPF, it is treated as a redistributed route and send as a Type 5 External LSA. This means it will appear throughout the entire OSPF domain. If you choose Type-1, it will increment the cost from the ABR (the router that originates it) as it is advertised through...