Hi all, I have a couple of basic questions regarding communities: - is the "interpret communities switch" command meant only for well-known communities or for any community sent to the RS? - how can I see from birdc if a member is sending a specific community to the RS? "sh route where ((<mycommunity>)) ~ bgp_community"? Thanks, Simone. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
Am 21.10.11 16:56, schrieb Simone Morandini:
Hi all,
I have a couple of basic questions regarding communities:
- how can I see from birdc if a member is sending a specific community to the RS? "sh route where ((<mycommunity>)) ~ bgp_community"?
show route all where (0,65333) ~ bgp_community with next-hop: show route all where (0,65333) ~ bgp_community && bgp_next_hop = 128.66.0.1 HTH, Stefan -- Stefan Jakob e-mail: stefan.jakob@de-cix.net DE-CIX Management GmbH Phone: +49 69 1730 902-32 Lindleystr. 12, 60314 Frankfurt Mobile: +49 172 695 8467 Geschaeftsfuehrer Harald A. Summa Fax: +49 69 4056 2716 Registergericht AG Koeln, HRB 51135 http://www.de-cix.net
Hi Stefan,
show route all where (0,65333) ~ bgp_community
thanks for the quick reply.. So if I'm not getting any output with this command, I should deduce that the member is not actually sending the community to the RS, right? To be more, specific, this member doesn't want to advertise its networks to a specific peer, so he is (supposedly) sending the (0, <peer>) community, but the other party is still receiving routes via the RS. I'd just like to check on the RS itself... Thanks, Simone. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.
- is the "interpret communities switch" command meant only for well-known communities or for any community sent to the RS?
Yes, it enables/disables buildin handling of well-known communities. Community checks in filters are not affected by this option.
Hi Stefan,
show route all where (0,65333) ~ bgp_community
thanks for the quick reply.. So if I'm not getting any output with this command, I should deduce that the member is not actually sending the community to the RS, right?
You should probably check that using: show route PREFIX all which would show route to PREFIX and all its attributes (like bgp_community). or perhaps: show route PREFIX protocol PROTO all which should show just the route (with attributes) from protocol PROTO. -- Elen sila lumenn' omentielvo Ondrej 'SanTiago' Zajicek (email: santiago@crfreenet.org) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."
participants (3)
-
Ondrej Zajicek -
Simone Morandini -
Stefan Jakob