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RE: BGP Community Attribute posted 09/06/2001
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I thought that all routes were in the default community of internet.  So if
you were to do a route-map w/o a match statement (which would match all),
then the set statements (like no-export) would be propagated to the rest of
the AS.  Correct me if I am wrong.


-----Original Message-----
From: nobody@xxxxxxxxxxxxxx [mailto:nobody@xxxxxxxxxxxxxx]On Behalf Of
Michael Wong
Sent: Thursday, September 06, 2001 4:54 AM
To: 'Mike Hennigan'; ccielab@xxxxxxxxxxxxxx
Subject: RE: BGP Community Attribute

Thanks Mike. According to Doyle's Vol II book page 271-272, he sort of
insinuates that the "send-community" is automatically sent to IBGP peers by
default and it's only EBGP peers that you have to use this command.

However while I was waiting for your reply, I was changing routers around
which are running different IOS images as I thought it was a bug, but I got
the same result. Once I used the "send-community" command to send the
community to IBGP peers, the community was propagated.

Thanks for your reply ..... MW

-----Original Message-----
From: Mike Hennigan [mailto:Mikeh@xxxxxxxxx]
Sent: Thursday, 6 September 2001 9:50 pm
To: ccielab@xxxxxxxxxxxxxx; Michael Wong
Subject: Re: BGP Community Attribute

yes it applies to both and make sure you have the ip bgp new format
statement in also so you can take advantage of the x:y format

Michael Hennigan, CCIE# 7993
Sr. Systems Engineer
Infrastructure Specialist
Western New York Computing Systems
Phone: 716-250-3700
Cell: 716-553-1124

>>> Michael Wong <Michael.Wong@xxxxxxxxxx> 09/06/01 07:16AM >>>
Hi Peoples

I have a question regarding the sending of the COMMUNITY attribute between
EBGP and IBGP peers. My understanding was that the COMMUNITY attribute is an
optional transitive attribute and is not sent by default. Therefore you need
the "neighbor x.x.x.x send-community" command to make this happen.

The million dollar question ..... does this apply to both EBGP peers and
IBGP peers?

Thanks .... MW :)
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