From: jerricho (jerricho23@gmail.com)
Date: Fri Feb 23 2007 - 01:04:16 ART
next-hop-self:- When ebgp relation replicates , next hop always changes.IBGP
routers only connected with other ibgp routers in same AS will not be able
to talk with routers outside the AS, if they are not directly connected with
each other. We would require a next-hop-self keyword in the ibgp router
which is directly connected with ebgp neighbor so that other router in same
AS (IBGP) can talk with ebgp routers.
Rgds,
Jerri
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Schulz, Dave
Sent: Friday, February 23, 2007 10:53 AM
To: dennis lin; ccielab@groupstudy.com
Subject: RE: BGP --neighbor x.x.x.x next-hop-self
Dennis -
When a route is received via ebgp, and passed into ibgp....the next hop is
not manipulated. Therefore, the routers within the AS will not know how to
reach this next hop (learned by ebgp).
By using the next-hop-self command, the AS border router is set as the next
hop. This allows the other routers within the AS reachability, since the
border router knows how to reach the route on the next AS.
Dave Schulz,
Email: dschulz@dpsciences.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
dennis lin
Sent: Thursday, February 22, 2007 10:13 PM
To: ccielab@groupstudy.com
Subject: BGP --neighbor x.x.x.x next-hop-self
I am quite confused about this BGP command: neighbor
x.x.x.xnext-hop-self Do you know under what situation I have to
issue this
command? Thanks
Dennis
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