From: Cecil Wilson (Cecil.Wilson@flextronics.com)
Date: Wed Sep 12 2007 - 11:12:21 ART
This maybe easy but which interface is consider the outgoing
interface IP?
Is it the directly connected interface? What happens when the
router has multiple routes to a subnet?
Thanks for all input
Cecil G. Wilson
IT Network Services
Office: (901) 215-2710
Cell: (901) 601-6201
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Prashant Shukla
Sent: Wednesday, September 12, 2007 8:49 AM
To: 'Ashok CCIE'; ccielab@groupstudy.com
Subject: RE: BGP over Frame-relay
Ashok,
It seems you are using the loopback to peer with your I/E-BGP peers and
the configs do not mention the "update-source" cmd.
By default , if the update-source is not mentioned the peering is done
using the outgoing interface's IP .
Here it seems in the BGP peering the routers are expecting the source of
the BGP TCP connection to be interface IPs rather that loop backs.
(default).
Would recommend using update-source with peers and Im sure the peering
will be up.
Have burnt my hands in the past with same.
Shukla.
Cisco Systems.
Scott Morris <swm@emanon.com> wrote: Take a look at "debug ip packet"
perhaps and you may find that the packets are coming from an IP address
that the other side doesn't have listed in its neighbor table. (e.g.
update-source)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Ashok CCIE
Sent: Wednesday, September 12, 2007 7:27 AM
Subject: BGP over Frame-relay
Hi Team,
I am configuring IBGP b/w loopback interfaces of two interfaces which
are over Frame-relay. But my routers are not making any neighbor
relationship.
Why so?
Config is here..
R1
router bgp 100
no synchronization
bgp router-id 2.2.2.1
bgp log-neighbor-changes
network 1.1.1.0 mask 255.255.255.0
network 2.2.2.1 mask 255.255.255.255
neighbor 2.2.2.2 remote-as 100
neighbor 2.2.2.2 next-hop-self
neighbor 2.2.2.3 remote-as 100
neighbor 2.2.2.3 next-hop-self
no auto-summary
R2
router bgp 100
no synchronization
bgp router-id 2.2.2.2
bgp log-neighbor-changes
network 1.1.1.0 mask 255.255.255.0
network 2.2.2.2 mask 255.255.255.255
neighbor 2.2.2.1 remote-as 100
neighbor 2.2.2.1 ebgp-multihop 255
no auto-summary
Could you please help?
Thanks,
Ashok
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