Support for frr ?

[opsec]

Is there a plan to support frr syntax ?

https://frrouting.org/

The syntax is very similar to cisco, but some differences exist.

[job]

Can you articulate the differences and perhaps provide a patch via a pull-request?

[gabrieltackitt]

Not the OP, but I use Vyos (which is Frr under the hood). The one major thing that I've found bgpq4 can't do that would be a big help for both FRR and Vyos is a way to sequence prefix lists.

FRR prefix list syntax is this:

ipv6 prefix-list SAMPLE-TITLE seq 1 permit 2001:db8::/32 ge 48 le 48

Vyos syntax is for one prefix item is:

set policy prefix-list SAMPLE-TITLE rule 1 prefix 2001:db8::/32
set policy prefix-list SAMPLE-TITLE rule 1 action permit
set policy prefix-list SAMPLE-TITLE rule 1 le 48
set policy prefix-list SAMPLE-TITLE rule 1 ge 32

I currently use the following to generate a custom format in bgpq4 and then go and manually change the ### into rule numbers.

-F "set rule ### action permit\nset rule ### prefix %n/%l\nset rule ### ge %A\nset rule ### le %a\n\n"

Even if not a fully supported format, I would love to see a way to sequence rules with numbers added into the custom format options.

[peterablehmann]

Hi, I have added support for FRRouting prefix lists in #126. I would appreciate if you have the time to review the changes.

[opsec]

Thanks, it looks very good, but newer versions of frr have numbered prefix lists, like this:

ip prefix-list NN seq 10 permit 192.168.10.0/24
ip prefix-list NN seq 20 permit 192.168.16.0/22

Any chance to add those seq numbers ?

[opsec]

I'm playing with the code and might have some quick-and-dirty answer.

[opsec]

The patches to main.c and printer.c modified to add sequence numbers see:

https://people.freebsd.org/~pi/bgpq4/patch-main.c
https://people.freebsd.org/~pi/bgpq4/patch-printer.c

[opsec]

And: bgpq4_print_frr_prefixlist() in printer.c is probably not needed, as bgpq4_print_cisco_prefixlist() works for frr.

[opsec]

The links above are extended to also support sequence numbers in frr as-path.

[opsec]

example:

bgpq4 -W 2 -Zsf 12502 AS-NEPUSTIL

[peterablehmann]

Thank you for the patches, I will take a look.

[peterablehmann]

I have added support for sequenced prefix lists. I'm not familiar with the as-path list, therefor I will not include it in my PR.