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by peterh
Mon Jan 07, 2019 12:55 am
Forum: Forwarding Protocols
Topic: BGP/OSPF interaction weiredness (simple lab setup)
Replies: 5
Views: 701

Re: BGP/OSPF interaction weiredness (simple lab setup)

It's going to pick the OSPF route which means there will be no active route in BGP to announce to the eBGP peer. This is normal and intended behavior - you'll see the same behavior with three routers in Cisco or Juniper set up in the same fashion. I also checked it now under Cisco IOS. IOS does by ...
by peterh
Sun Jan 06, 2019 10:53 pm
Forum: Forwarding Protocols
Topic: BGP/OSPF interaction weiredness (simple lab setup)
Replies: 5
Views: 701

Re: BGP/OSPF interaction weiredness (simple lab setup)

Implemented the same setup using Vyos. It does NOT show the RouterOS behaviour: ### R1 has all routes to 1.1.1.0/24, 2.2.2.0/24, 3.3.3.0/24 ### vyos@r1:~$ show ip route Codes: K - kernel route, C - connected, S - static, R - RIP, O - OSPF, I - ISIS, B - BGP, > - selected route, * - FIB route C>* 1.1...
by peterh
Sun Jan 06, 2019 1:31 pm
Forum: Forwarding Protocols
Topic: BGP/OSPF interaction weiredness (simple lab setup)
Replies: 5
Views: 701

Re: BGP/OSPF interaction weiredness (simple lab setup)

Full config of all 3 routers: ### R1 ### # jan/04/2019 23:28:08 by RouterOS 6.43.8 # software id = 13FD-KY09 # # # /interface bridge add name=br1 add name=brlo /routing bgp instance set default as=65000 router-id=192.168.99.1 /ip address add address=192.168.99.1 interface=brlo network=192.168.99.1 a...
by peterh
Sat Jan 05, 2019 10:43 pm
Forum: Forwarding Protocols
Topic: MPLS with OSPF unable to get Router 2 to work with Internet
Replies: 11
Views: 835

Re: MPLS with OSPF unable to get Router 2 to work with Internet

Did you try to use the sniffer to find out on which router the flow is failing?
/tool sniffer quick ip-address=192.168.3.0/24 ip-protocol=1
by peterh
Sat Jan 05, 2019 4:43 pm
Forum: Forwarding Protocols
Topic: MPLS with OSPF unable to get Router 2 to work with Internet
Replies: 11
Views: 835

Re: MPLS with OSPF unable to get Router 2 to work with Internet

On R1, what do you need the "vrf-interface=ether10" for? Have you tried to remove it?
0 ADS dst-address=0.0.0.0/0 gateway=192.168.111.254
gateway-status=192.168.111.254 reachable via ether10 distance=1
scope=30 target-scope=10 vrf-interface=ether10
by peterh
Sat Jan 05, 2019 4:31 pm
Forum: Forwarding Protocols
Topic: MPLS with OSPF unable to get Router 2 to work with Internet
Replies: 11
Views: 835

Re: MPLS with OSPF unable to get Router 2 to work with Internet

The ip route print detail output from R2 is missing a connected route (C) to 192.168.3.0/24, did you post the fuil output? Flags: X - disabled, A - active, D - dynamic, C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, B - blackhole, U - unreachable, P - prohibit 0 ADo dst-address=0.0.0....
by peterh
Sat Jan 05, 2019 4:08 pm
Forum: Forwarding Protocols
Topic: BGP/OSPF interaction weiredness (simple lab setup)
Replies: 5
Views: 701

BGP/OSPF interaction weiredness (simple lab setup)

Another day, another BGP/OSPF interaction weirdness under RouterOS 6.43.8. Very simple lab setup: [Router R1 AS65000]---eBGP---[Router R2 AS65010]---iBGP/OSPF---[Router R3 AS65010] | | | [1.1.1.0/24] [2.2.2.0/24] [3.3.3.0/24] Everything working fine, all three routers can see each other's connected ...
by peterh
Sat Jan 05, 2019 2:43 pm
Forum: Forwarding Protocols
Topic: Error in RouterOS BGP Best Path Selection Algorithm Documentation?
Replies: 1
Views: 492

Re: Error in RouterOS BGP Best Path Selection Algorithm Documentation?

Documentation is - shockingly - correct. RouterOS is not RFC4271 compliant. Everbody who has redundant BGP paths should be warned not to use RouterOS, as it will result in random path selections since IGP metrics are ignored. https://wiki.mikrotik.com/wiki/Manual:BGP_HowTo_%26_FAQ#Question:_What_are...
by peterh
Sat Jan 05, 2019 2:33 pm
Forum: Forwarding Protocols
Topic: BGP ignores local pref
Replies: 4
Views: 941

Re: BGP ignores local pref

There is only a single (default) BGP instance running on the device. iBGP is fully meshed, the routes are learned by different iBGP peers, one peer (192.168.99.1) advertises with local preference 125, the other peer (192.168.99.2) advertises with local preference 75. Which route is selected as activ...
by peterh
Sat Jan 05, 2019 2:02 pm
Forum: Forwarding Protocols
Topic: MPLS with OSPF unable to get Router 2 to work with Internet
Replies: 11
Views: 835

Re: MPLS with OSPF unable to get Router 2 to work with Internet

From which source subnet are you trying to access the Internet? 192.168.115.0/24 doesn't seem to be visible in the output.
by peterh
Sat Dec 22, 2018 12:01 am
Forum: Announcements
Topic: v6.43.8 [stable] is released!
Replies: 169
Views: 33732

Re: v6.43.8 [stable] is released!

Working fine on mAP and RB2011.
by peterh
Fri Dec 21, 2018 11:32 pm
Forum: Forwarding Protocols
Topic: provide Public and private ip with ccr1036-12g-4s
Replies: 1
Views: 475

Re: provide Public and private ip with ccr1036-12g-4s

I guess he was rather talking about PPP, or L2TP or PPTP, instead of P2P.

Anyways, you should provide a topological drawing or more detailed description about how your customers are connected to you.
by peterh
Fri Dec 21, 2018 1:34 am
Forum: Forwarding Protocols
Topic: How can I reeduce load over 1072 to 2 x 1036
Replies: 8
Views: 1178

Re: How can I reeduce load over 1072 to 2 x 1036

Where is the CCR 1072 located? I don't see it in the drawing. Is not visible because you have been drawing the target scenario with Router A+B (2x 1036?) already replacing the 1072? Or is the CCR 1072 called "BGP Router" in the drawing?
by peterh
Fri Dec 21, 2018 1:15 am
Forum: Forwarding Protocols
Topic: BGP prefering local preference over routing distance
Replies: 17
Views: 8459

Re: BGP prefering local preference over routing distance

I've never seen anything wrong with the ROS bgp path selection algorithm. In fact, distance should never be considered by BGP. That's a RIB metric and doesn't exist in BGP. Actually RouterOS is not RFC4271 compliant since it does not take IGP metrics into account in its BGP path selection algorithm...
by peterh
Fri Dec 21, 2018 1:07 am
Forum: Forwarding Protocols
Topic: BGP prefering local preference over routing distance
Replies: 17
Views: 8459

Re: BGP prefering local preference over routing distance

So among equal-length prefixes, BGP will chose: [...] 8: closest next-hop [...] That's indeed how it should work according to RFC 4271. RouterOS however does not care for the IGP metrics to the next hop: https://wiki.mikrotik.com/wiki/Manual:BGP_Best_Path_Selection_Algorithm As such you cannot use ...
by peterh
Thu Dec 13, 2018 12:52 am
Forum: General
Topic: Feature Request: 802.1X over ethernet
Replies: 39
Views: 9753

Re: Feature Request: 802.1X over ethernet

Agree. 802.1x is mandatory in larger enterprise switch environments. Regulatory requirements subject more and more companies to adherence of IT security standards such as ISO 27002. These standards all recommend network access control. Without it, the product cannot be used in such environments. Sin...
by peterh
Wed Dec 12, 2018 2:10 pm
Forum: Forwarding Protocols
Topic: Is it possible to host 2 web servers within the same public IP address
Replies: 8
Views: 1118

Re: Is it possible to host 2 web servers within the same public IP address

Yes, you will need a reverse proxy or load balancer with HTTP/S intelligence to achieve this. For port 80, the reverse proxy needs to look into the "host:" header of the HTTP request and forward the packet depending on the content. For port 443, the reverse proxy needs to process SNI (Server_Name_In...
by peterh
Wed Dec 12, 2018 1:55 pm
Forum: Forwarding Protocols
Topic: BGP ignores local pref
Replies: 4
Views: 941

BGP ignores local pref

In my MikroTik lab (6.43.7), BGP local pref seems to be ignored. Presented with two paths to destination 192.168.99.11/32 via two alternative BGP next hops (192.168.99.1 & 192.168.99.2), the router choses the next hop with a worse local pref of 50 (192.168.99.2), instead of chosing the next hop with...
by peterh
Tue Dec 11, 2018 8:03 pm
Forum: Forwarding Protocols
Topic: Error in RouterOS BGP Best Path Selection Algorithm Documentation?
Replies: 1
Views: 492

Error in RouterOS BGP Best Path Selection Algorithm Documentation?

According to MikroTik documentaion, the BGP best path selection algorithm does not take the IGP shortest path to the next hop into account: https://wiki.mikrotik.com/wiki/Manual:BGP_Best_Path_Selection_Algorithm Is this a documentation error or does it reflect the actual implementation in RouterOS? ...