BIRD Support

[Denriful]

Hi. Do you have plans to add BIRD support ?

[Vadims06]

Hi, @Denriful, thank you for being the first one who created an issue regarding the topolograph!) Actually, right now i'm focusing on docker's version of the site, but I could try to add BIRD support, if you send me aka show ip ospf database router, show ip ospf database network ,.. summary and external to my email - admin@topolograph.com. I had a look at BIRD's spec and I guess show ospf lsadb could have all necessary output.

[Vadims06]

Hi @Denriful, docker's version has been released. By now there is only FRR/Quagga, Cisco, Juniper support

[Denriful]

Hi, @Denriful, thank you for being the first one who created an issue regarding the topolograph!) Actually, right now i'm focusing on docker's version of the site, but I could try to add BIRD support, if you send me aka show ip ospf database router, show ip ospf database network ,.. summary and external to my email - admin@topolograph.com. I had a look at BIRD's spec and I guess show ospf lsadb could have all necessary output.

Hi, i send you BIRD data.

[benjojo]

Hi! I'm also very interested in this feature being supported, I can send you a show ospf lsadb as well if you need it

[Vadims06]

Hi! I'm also very interested in this feature being supported, I can send you a show ospf lsadb as well if you need it

Hi, @benjojo. Thanks for your feedback. I reviewed bird's output and bird doesn't follow RFS2328 OSPFv2 regarding LSA1 router and LSA2 network format output. Based on it, it's not clear to find out is it p2p link or shared with DR. But I can suggest another solution - I can implement Quagga container with an option to setup GRE tunnel from docker's version of Topolograph to an instance with BIRD and setup OSPF adjacency. Then you can get your OSPF domain visual. Is it applicable for you?..

[benjojo]

ah damn, I'll just spin up a Quagga container on my end and just use this tool via that then. Is it not possible to make an imperfect parser based on the bird output?

[Vadims06]

ah damn, I'll just spin up a Quagga container on my end and just use this tool via that then. Is it not possible to make an imperfect parser based on the bird output?

@benjojo, i will happy to try to make this parser. Could you please kindly send me 'show ospf lsadb type 1/2, and show ospf state all. Additionally, simple picture of topology is needed in order to understand BIRD output logic. It's unnecessary to paint all nodes if you have 100 devices, but a simple triangle topology with 3-5 devices will be perfect.

[benjojo]

Sure, Here are two examples:

as206924-ospf.txt

This is the network I'm trying to visualise, (The diagram is what I'm trying to verify, hence me finding this tool :) )

Here is your requested setup, stolen from a previous test setup:

simple.txt The simple.txt taken from the "Bank" node.

[Vadims06]

many thanks, @benjojo. Few clarifications, because I'm not familiar with BIRD, so I'm curious about this record in as206924-ospf.txt:

router 185.230.223.49
        distance 1
        network [185.230.223.49-2] metric 1

what does the record network [...] mean? In the documentation, it stands as Definition of area IP ranges. This is used in summary LSA origination. but I didn't get the point =) Any assumptions? Another question - there is no router statement, does it mean that 185.230.223.49 doesn't have OSPF adjacency? If so, how do we know about 185.230.223.49 if no adj?)..

[benjojo]

It appears to come from: https://github.com/CZ-NIC/bird/blob/c26c6bc2d78a2fe76f27dcc9fbb5afc95c3a7626/proto/ospf/ospf.c#L1103

NIF being defined here: https://github.com/BIRD/bird/blob/master/proto/ospf/ospf.h#L639

I assume this is because while all of the main nodes are connected via point to point links, 185.230.223.49 is connected on a broadcast link. -2 assuming means it's the second interface ID?

[benjojo]

Just checked, and the OSPF interface on 185.230.223.49 is indeed interface index 2, so i assume that's what it's signalled

[Vadims06]

@benjojo Added BIRD support on the site and also pushed vadims06/topolograph:2.10 with bird. Please check and give feedback.

[benjojo]

Amazing, Thank you so much!

[Vadims06]

If no any comments - I can close this request. BIRD is available from 2.10 version. Many thanks @benjojo and Denriful for the help