[14634] in North American Network Operators' Group
BGP Community questions
daemon@ATHENA.MIT.EDU (Jan Czmok)
Fri Jan 16 11:32:55 1998
Date: Fri, 16 Jan 1998 14:41:21 +0100
From: Jan Czmok <czmok@ipf.de>
To: nanog@merit.edu
I have a question regarding BGP Community. How can this be done ?
remarks: Community Definition
remarks:
---------------------------------------------------------------
remarks: 1755:666 Route received from other provider with
peering-
remarks: agreement with EBONE.
remarks: 1755:667 Route received from Sprint/ICM.
remarks:
That is clear, they do a match against the AS Num and set community 666
and 667
remarks: Communities to control traffic (settable by RBSes).
remarks:
remarks: Community Definition
remarks:
---------------------------------------------------------------
remarks: 1755:1000 No ICM(US) announcement of route
remarks: 1755:1001 Backup through ICM
remarks:
remarks: 1755:1100 No DIGEX(US) announcement of route
remarks:
remarks: 1755:2000 No announcement to european peers
remarks: 1755:2001 Prepend to path when announcing to european
peers
remarks:
how is this done ?
int xxx
ip access-group community-list 10 out
ip community-list 10 deny 1755:2000
ip community-list 10 ?????????????
whats the permit rule for that?
remarks: 1755:2101 Do not announce to EUnet (AS286)
remarks: 1755:2102 Do not announce to IBM GN (AS2686)
remarks: 1755:2103 Do not announce to RIPE NCC (AS3333)
remarks: 1755:2104 Do not announce to BT (AS5400)
remarks: 1755:2105 Do not announce to AUCS (AS3300)
remarks: 1755:2106 Do not announce to UUNET (AS702)
remarks: 1755:2107 Do not announce to Compuserve (AS5621)
remarks:
remarks: 1755:2201 Prepend when announcing to EUnet (AS286)
remarks: 1755:2202 Prepend when announcing to IBM GN (AS2686)
remarks: 1755:2203 Prepend when announcing to RIPE NCC (AS3333)
remarks: 1755:2204 Prepend when announcing to BT (AS5400)
remarks: 1755:2205 Prepend when announcing to AUCS (AS3300)
remarks: 1755:2206 Prepend when announcing to UUNET (AS702)
remarks: 1755:2207 Prepend when announcing to Compuserve (AS5621)
the prepend stuff is clear
Many thanks for help
Greetings
Jan Czmok
