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by merlinthemagic
Sat Oct 29, 2011 10:56 pm
Forum: General
Topic: x86 5.5 and 5.7 ssh key problem
Replies: 32
Views: 11085

Re: x86 5.5 and 5.7 ssh key problem

Same issue here, 25% of the MT433AH i have upgraded to 5.7 are now not allowing ssh to connect.

These units are in the field and cannot be access via net install.

Please advice on a fix, i could try to force a downgrade to 4.17 and then 5.7 again.

Martin Madsen
by merlinthemagic
Tue Aug 09, 2011 8:12 am
Forum: Wireless Networking
Topic: spectral-scan
Replies: 2
Views: 871

Re: spectral-scan

Mikrotik,

Is there anyway to decode the output, or is it broken as of v5.5?

We are automating a few tests for our connections and this is one we would like to have working with our software.

Regards,

Martin Madsen
by merlinthemagic
Tue Aug 02, 2011 5:48 am
Forum: Wireless Networking
Topic: spectral-scan
Replies: 2
Views: 871

spectral-scan

Hey Guys, Testing v5.5. Have anyone cracked the code used by Mikrotik when saving spectral-scan results to a file? Hex editor, could make sense, but without help on the syntax does not make much sense. Plain reading of the file produces the following (this is just a sample): ËM2 ˆ ˆ ˆ ˆ 2 Ò þ 0À ...
by merlinthemagic
Sun Jan 30, 2011 12:36 am
Forum: Forwarding Protocols
Topic: missing connected and static routes from OSPF Stub area
Replies: 2
Views: 1150

Re: missing connected and static routes from OSPF Stub area

Hey, No VRF. When looking at the debug for the ABR's i do not see LSA's for subnets/routes connected on other interfaces than the one facing the stub. i.e. ether1 has 10.205.100.2 and is the osfp stub interface. wlan1 has 10.205.65.0/27 and is on another interface not running OSPF. I need all connec...
by merlinthemagic
Sat Jan 29, 2011 11:32 am
Forum: Forwarding Protocols
Topic: missing connected and static routes from OSPF Stub area
Replies: 2
Views: 1150

missing connected and static routes from OSPF Stub area

Hey All, I have attached a stub area to our backbone. Neighbors are up and running and the default route is being flooded into the stub from the ABR's. The problem is that I do not see the connected and static routes from the routers in the stub appear in area 0. What do i have to do in order for th...
by merlinthemagic
Thu Jan 27, 2011 9:49 am
Forum: Forwarding Protocols
Topic: OSPF Stub area on broadcast Network
Replies: 1
Views: 1751

Re: OSPF Stub area on broadcast Network

note to one self, keep track of MTU sizes across the network. It seems that the MTU of the VLAN connecting to the Edge / Backbone was mismatched 9500 vs. 9200 with a switch in the middle doing 9198. Made everything 9198 and issue is gone. Guess the router fits as many LSA's into a single frame as po...
by merlinthemagic
Thu Jan 27, 2011 9:44 am
Forum: Forwarding Protocols
Topic: OSPF Stub area on broadcast Network
Replies: 1
Views: 1751

OSPF Stub area on broadcast Network

Hey All, Building our first stub areas. Here is the issue: I have defined 2 areas on my ABR, Backbone and Border. Backbone is working just fine but the Border area is behaving oddly. Full config is below, but here is a summery: Border is a Stub area, it is configured for broadcast. Both routers see ...
by merlinthemagic
Thu Jan 06, 2011 8:50 am
Forum: Forwarding Protocols
Topic: refresh time and k factor for MPLS
Replies: 6
Views: 2137

Re: refresh time and k factor for MPLS

Thank you. We were hoping for sub second reroute, we await FRR's arrival.

If i may make a suggestion, it is a pain to configure strict LSP's using the command line, maybe you would consider making MPLS TE part of winbox.

Regards,

Martin Madsen
by merlinthemagic
Tue Dec 28, 2010 10:17 pm
Forum: Forwarding Protocols
Topic: refresh time and k factor for MPLS
Replies: 6
Views: 2137

Re: refresh time and k factor for MPLS

MPLSGUY, any input on this issue?
by merlinthemagic
Sat Dec 18, 2010 2:01 am
Forum: Forwarding Protocols
Topic: Is someone doing a man in the middle attack on me?
Replies: 2
Views: 2300

Re: Is someone doing a man in the middle attack on me?

where to start.

If someone gave you that piece of information, would you be able to deduct if it is a MITM attack?

to me it looks like your sister is looking to buy gold and a new surfboard.
by merlinthemagic
Sat Dec 18, 2010 12:56 am
Forum: Forwarding Protocols
Topic: refresh time and k factor for MPLS
Replies: 6
Views: 2137

refresh time and k factor for MPLS

We are forwarding all traffic onto TE tunnels. the issue we are having is that we have redundant routers at every edge on the network, running VRRP for gateway protection. We build tunnels from the BGP edge (also redundant) to each edge device that is 2 x 2 = 4 tunnels in each direction. Now we setu...
by merlinthemagic
Wed Sep 08, 2010 10:32 am
Forum: Forwarding Protocols
Topic: RB1000 100% CPU at relatively low forwarding load
Replies: 3
Views: 2015

Re: RB1000 100% CPU at relatively low forwarding load

Sacrificed our firewall and disabled the connection tracking. This dropped the load to 60% @ about 840Mbit/s. Should this be necessary? is the routing performance based on no tracking? And as i understand it firewall will not work once Conn. Track is disabled, is this correct? Regards, Martin Madsen...
by merlinthemagic
Wed Sep 08, 2010 9:48 am
Forum: General
Topic: Loadbalancing 2 isp and Class C subnet with real ips
Replies: 2
Views: 612

Re: Loadbalancing 2 isp and Class C subnet with real ips

The short answer is that what you are attempting is not possible. Downstream traffic is routed to the ISP announcing your /24 (c-class), in this case your 5 Mbit/s provider. If you want the downstream to come over a different link (the 40Mbit/s) you will need to get your own ASN and BGP support from...
by merlinthemagic
Wed Sep 08, 2010 4:26 am
Forum: Forwarding Protocols
Topic: RB1000 100% CPU at relatively low forwarding load
Replies: 3
Views: 2015

RB1000 100% CPU at relatively low forwarding load

Hey All, We are having issues with the forwarding capacity of the RB1000. I was under the impression that that model would push roughly 1.0GBit/s @ 64byte/packet. We just had a link in a ring fail and as a consequence we doubled the traffic going through a single RB1000. The router shows 100% and ad...
by merlinthemagic
Sun Apr 25, 2010 4:58 am
Forum: Wireless Networking
Topic: Nstreme2 + SNMP
Replies: 9
Views: 2880

Re: Nstreme2 + SNMP

Hey Guys, Im looking for the signal strength as seen by the client (both sides r52n radios). Using 4.7 on 433AH i cannot get output from the wireless oids: [admin@ipaddress] /interface wireless> print oid 0 tx-rate=.1.3.6.1.4.1.14988.1.1.1.1.1.2.12 rx-rate=.1.3.6.1.4.1.14988.1.1.1.1.1.3.12 strength=...
by merlinthemagic
Tue Feb 09, 2010 1:51 am
Forum: Wireless Networking
Topic: 802.11n
Replies: 939
Views: 289724

Re: 802.11n

Hey, We are using the r52n for a bunch of links, and have 2 issues. 1) Have links that will move 60-90Mbit/s in one direction but NEVER more than 31Mbit/s the other way, regardless of what side is AP and Station. Multiple frequencies provide the same result, the link is locked at -55 to -62 and 260M...
by merlinthemagic
Thu Oct 29, 2009 9:03 pm
Forum: Wireless Networking
Topic: 802.11n
Replies: 939
Views: 289724

Re: 802.11n

We have a few N links out there. With 4.1, the link will drop from time to time, not disconnect (still showing in the registration table), but the station will transmit at 6.5Mbit/s and no data will pass, a few seconds later the link will come back up to 130Mbit/s and everything is fine again. These...
by merlinthemagic
Thu Jul 02, 2009 1:35 am
Forum: General
Topic: Bricked rb600
Replies: 1
Views: 731

Bricked rb600

Hey All, I cant seem to get a rb600 unbricked. Here is how it happened: installed 4.Beta3, it would not reboot after the upgrade so i waited 30 min and then pulled power. it came up and i upgraded the license in order to enable the r52n cards. upgrade went through without hitch, except it dident ask...
by merlinthemagic
Wed Jun 24, 2009 11:36 pm
Forum: Wireless Networking
Topic: 802.11n
Replies: 939
Views: 289724

Re: 802.11n

Hey All, We setup a 6 mile link between 2 high rise buildings using a single RB52n on each side with a 32dBi dual pol antenna. The Signal strength is -63 when locked at 130Mbits-HT (don't know the mW output of the RB52 at that rate). The results are mixed, but one major thing stands out, if the radi...
by merlinthemagic
Wed Jun 17, 2009 12:43 am
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

Re: MPLS MTU

After applying v3.25 everything now works. Everything bridges across as it should.

Thanks for the fix,

Martin Madsen
Bel Air Internet
by merlinthemagic
Sat Jun 06, 2009 3:32 am
Forum: Forwarding Protocols
Topic: Control inbound / outbound traffic based on prefix or ASN
Replies: 1
Views: 1257

Control inbound / outbound traffic based on prefix or ASN

Hey Guys, Here is our setup, i need to know the following, that i cant seem to figure out from reading other posts. We have 2 RB1000's both with 2 peers (see attach.). Im only concerned with one RB1000 at a time though, but if the fact that we have 2 routers connected makes a difference im mentionin...
by merlinthemagic
Fri Jun 05, 2009 10:23 pm
Forum: Forwarding Protocols
Topic: Announcing IPv6 routes via BGP
Replies: 6
Views: 4684

Re: Announcing IPv6 routes via BGP

Hey,

Ya that works

Regards,

Martin Madsen

Bel Air Internet
by merlinthemagic
Wed Jun 03, 2009 4:32 am
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

Re: MPLS MTU

Hey, All i can seem to figure out is this: Setting all bridged /interface mtu=1522 and RB1000's /interface mtu=1500: ospf=ok, mpls=not ok Setting all bridged /interface mtu=1522 and RB1000's /interface mtu=1522: ospf=not ok, mpls=not ok because of IGP state (assumed). If you are telling me there sho...
by merlinthemagic
Tue Jun 02, 2009 1:54 am
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

Re: MPLS MTU

Hey, Tried to enable MPLS on a backup link, with all /interface MTU=1500 (have to do it with that MTU otherwise OSPF does not route over the link) and i can only get packets that are 1496 bytes or less through. Makes sense since simple MPLS has a 4 byte label. That means that winbox cannot retrieve ...
by merlinthemagic
Mon Jun 01, 2009 11:19 pm
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

Re: MPLS MTU

Hey, I have set the MTU of the bridged boards (rb433) to 1522 on both ether1 and Nsteme2 on both sides. No problems, i can ping and do speed test, everything works. The minute i change the MTU on the RB1000's, i can ping (1500 byte packet) but no speedtest (the speedtest authenticates, but then stay...
by merlinthemagic
Wed May 27, 2009 6:34 am
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

Re: MPLS MTU

Thanks, that was very informative. Appriciate all the time you spend on this.


Regards,

Martin Madsen
Bel Air Internet
by merlinthemagic
Tue May 26, 2009 6:46 pm
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

Re: MPLS MTU

Hey, Here is the followup, to make sure im getting it all: The MTU for each interface is in effect when non-mpls packets are received on an interface, and the MPLS MTU is used for MPLS packets, correct? Since im not running MPLS on the equipment that makes the wireless links between the RB1000's (th...
by merlinthemagic
Tue May 26, 2009 9:35 am
Forum: Forwarding Protocols
Topic: MPLS MTU
Replies: 17
Views: 13046

MPLS MTU

Hey Guys, I have looked at the wiki and the forum and i cant seem to find conclusive information as to what the MTU should be in order to run MPLS with VPLS tunnels over it. It seems that VPLS requires a 1540 MTU in order to move 1500 byte packets. here are my questions: Will setting the MPLS MTU un...
by merlinthemagic
Thu Apr 30, 2009 7:56 pm
Forum: Forwarding Protocols
Topic: MPLS ospf on VPLS link
Replies: 2
Views: 1908

Re: MPLS ospf on VPLS link

Hey,

Thanks, you are right. The router dead interval is 40 seconds, same as the outages and the routing table reflects the shortest path becomes the vpls interface.


Thanks Again.

Martin Madsen
Bel Air Internet
by merlinthemagic
Thu Apr 30, 2009 3:40 am
Forum: Forwarding Protocols
Topic: MPLS ospf on VPLS link
Replies: 2
Views: 1908

MPLS ospf on VPLS link

Hey guys, this is not really a problem. Its me not being able to wrap my head around why something is happening the way it is. Here we go. MPLS setup on 6 routers, all 4XXAH Routerboards all running 3.23 w/mpls-test. Linear setup with one redundant path (much like the recomended lab setup). OSPF and...
by merlinthemagic
Mon Apr 20, 2009 10:31 pm
Forum: Forwarding Protocols
Topic: Announcing IPv6 routes via BGP
Replies: 6
Views: 4684

Re: Announcing IPv6 routes via BGP

Hey, After adding the subnet to an interface, i should Then i redistribute connected via the BGP instance? If so the only problem with that is that i also have connected ipv4 address space that i dont want to anounce over that peer. But i guess i can filter that out somehow. Can you confirm that you...
by merlinthemagic
Mon Apr 20, 2009 2:51 pm
Forum: Forwarding Protocols
Topic: Announcing IPv6 routes via BGP
Replies: 6
Views: 4684

Re: Announcing IPv6 routes via BGP

I have that checked, the problem is where do i announce our /32 worth of addresses. Do i add them under Routing - prefix list? and if so how do i make it so those IPv6 prefixes are announced to specific peers?

Thanks in advance

Martin
by merlinthemagic
Fri Apr 17, 2009 1:29 am
Forum: Forwarding Protocols
Topic: Announcing IPv6 routes via BGP
Replies: 6
Views: 4684

Announcing IPv6 routes via BGP

Hey All,

Im trying to announce my IPv6 addresses to one of our peers and cant seem to find the appropriate place to do this. The session is up and running, and im announcing IPv4 no problem using the "Networks" tab in the BGP window (winbox).

Is there a IPv6 equivilent?

Regards,

Martin Madsen
by merlinthemagic
Mon Jan 12, 2009 10:28 pm
Forum: General
Topic: BGP and 4 byte ASN support
Replies: 15
Views: 3097

Re: BGP and 4 byte ASN support

Have anyone confirmed that 32 bit ASN's are working in v3? I looks like the field will accept a xxxxx.xxxxx formatted asn, but does it work?

Thanks,

MM
by merlinthemagic
Sun Dec 07, 2008 10:10 pm
Forum: General
Topic: RouterOS v3.17, v4.0beta1, The Dude v3 released
Replies: 57
Views: 14892

Re: RouterOS v3.17, v4.0beta1, The Dude v3 released

correction, i was not aware that the propagate-ttl=no is nogotiated from the ingress router downstream to all LSR's in the LSP. By installing the Mpls-Beta only on the edge and leaving all other (all Provider Routers) with the stock 3.17 mpls + routing modules and only setting the propagate-ttl=no o...
by merlinthemagic
Sun Dec 07, 2008 8:44 am
Forum: General
Topic: RouterOS v3.17, v4.0beta1, The Dude v3 released
Replies: 57
Views: 14892

Re: RouterOS v3.17, v4.0beta1, The Dude v3 released

when installing the routeing-test and the mpls-beta packages we start seeing packet loss across the network. When setting the propagate-ttl=no nothing seems to happen, traceroute still shows hops except for the timeouts from the packetloss. setup is the same as you have in all your documents. (R1-R2...
by merlinthemagic
Wed Jun 04, 2008 8:58 am
Forum: General
Topic: MPLS EXP bits
Replies: 3
Views: 1068

Re: MPLS EXP bits

Hey, Guys, i know you guys are really limited on resources when it comes to MPLS. However adding MPLS to a system like this with a cost 1/15 of the typical competition (RB1000 + L6 vs. Cisco ME6500 + Adv. IP Services) really will allow us small ISP's to compete on completely different level, that wa...
by merlinthemagic
Sun Jun 01, 2008 9:25 pm
Forum: General
Topic: MPLS EXP bits
Replies: 3
Views: 1068

MPLS EXP bits

Hey, We have been testing the MPLS feature set and would like to know the default behaviour of the 3 EXP bits in the labels. If we mangle packets on ingress, setting DSCP values. Will ROS map the TOS to the EXP and will all LSR's honor the EXP settings? On a side note, will MPLS-TE tunnels be config...