Hi
The following is a lab configuration with some comunity and some other BGP
staff, I hopw it will help.
hostname Lab
!
!
!
!
interface Loopback0
ip address 197.12.1.1 255.255.255.0
!
interface Loopback1
ip address 197.12.8.1 255.255.255.0
!
interface Ethernet0
ip address 192.168.20.12 255.255.255.0
media-type 10BaseT
!
interface Ethernet1
ip address 192.168.12.50 255.255.255.240
media-type 10BaseT
!
router eigrp 12
network 192.168.12.0
network 197.12.1.0
network 197.12.8.0
!
router bgp 65001
bgp confederation identifier 12
bgp confederation peers 65002 65003 65004
aggregate-address 197.12.0.0 255.255.0.0 as-set summary-only attribute-map
setcom
redistribute eigrp 12 route-map intoBGP
neighbor 192.168.20.20 remote-as 20
neighbor 192.168.20.20 send-community
neighbor 192.168.20.20 route-map prepend out
neighbor 192.168.20.20 unsuppress-map R3R4
neighbor 192.168.20.20 filter-list 12 out
neighbor 197.12.2.1 remote-as 65002
neighbor 197.12.2.1 ebgp-multihop 255
neighbor 197.12.2.1 update-source Loopback0
neighbor 197.12.2.1 next-hop-self
neighbor 197.12.2.1 send-community
neighbor 197.12.2.1 unsuppress-map R1R2
!
ip classless
ip bgp-community new-format
ip as-path access-list 12 permit ^$
!
access-list 1 permit 197.12.0.0
access-list 10 permit 197.12.0.0 0.0.255.255
access-list 12 permit 197.12.8.0
access-list 12 permit 197.12.1.0
access-list 12 permit 197.12.3.0
access-list 12 permit 197.12.2.0
access-list 34 permit 197.12.5.0
access-list 34 permit 197.12.4.0
access-list 34 permit 197.12.7.0
access-list 34 permit 197.12.6.0
route-map R1R2 permit 10
match ip address 12
!
route-map setcom permit 10
set community 12:100
!
route-map R3R4 permit 10
match ip address 34
!
route-map intoBGP permit 10
match ip address 10
set origin igp
!
route-map prepend permit 10
match ip address 1
set as-path prepend 12 12
!
route-map prepend permit 9999
!
!
!
line con 0
line aux 0
line vty 0 4
login
!
end
Enjoy
Gil
-----Original Message-----
From: suaveguru [mailto:[EMAIL PROTECTED]]
Sent: ??? ??? 27 ?????? 2000 16:08
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Subject: RE: BGP community tagging
thanks I appreciate it , will you be able to give me
an example to illustrate what you say?
--- [EMAIL PROTECTED] wrote:
> Hi,
>
> In BGP you can tag routes to ensure consistent
> filtering or route
> selection policy, you can tag inbound and outbound
> updates or when you
> redistribute and by that select best path.
> The communities are built out of 32bit value and
> split in to two parts the
> first 16 bit contain ASN of the AS that defines
> community meaning.
> The second part defines the local meaning.
>
> I hope it clears it up for you
>
> Gil
>
>
> -----Original Message-----
> From: suaveguru [mailto:[EMAIL PROTECTED]]
> Sent: ??? ??? 27 ?????? 2000 11:06
> To: [EMAIL PROTECTED]
> Subject: BGP community tagging
>
>
> hi anyone
>
> knows what community tagging is in bgp ? I have
> people
> asking me to remove them from community tagging ,
> anyone knows what it is?
>
>
> suaveguru
>
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Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
