From: Dillon Yang (gzdillon@hotmail.com)
Date: Tue Mar 08 2005 - 12:51:57 GMT-3
Hi, Artir:
Thanks for your replay.
I just did a lookup on the book. So, in the case, for preventing the next-hop ip from unreachable, I must choose a iBGP set itself address as next-hop, right?
Then how about the subas under confederation?
TIA
dillon
----- Original Message -----
From: "Artir Geci" <artirgeci@gmail.com>
To: "'Dillon Yang'" <gzdillon@hotmail.com>; "'Group Study'" <ccielab@groupstudy.com>
Sent: Tuesday, March 08, 2005 10:45 PM
Subject: RE: Where-next-hop-self
> You have the routers on different AS. If you leave it without changing the
> next-hop (just basic config), at Ra as next-hop for 172.16.0.0 you are going
> to have 1.1.1.3, so in this case you need to put "neighbor next-hop-self".
>
> If you have Doyle's volume II check there for the next_hop attribute to
> understand why. Or check RFC 1771.
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Dillon Yang
> Sent: Tuesday, March 08, 2005 12:57 PM
> To: Group Study
> Subject: Where-next-hop-self
>
> Hi, all:
>
> A case says the next hop to 172.16.0.0 in Ra should be the 1.1.1.2 in the
> topology:
>
> Ra(spoke)------FR--------Rb(hub)-------FR-------Rc(spoke)
> 1.1.1.1-----------------1.1.1.2-----------------1.1.1.3---172.16.0.0
> As1----------------------As2--------------------As2
>
> It says the next-hop attribute has been carried by Rb to Ra, to prevent
> 1.1.1.3(next-hop) being seen, the command "neighbor 1.1.1.1 next-hop-self"
> must be under "router bgp 2" on Rb. My thought is the 3 routers are in the
> same subnet, so its unnecessary to change the default next-hop. Any advice?
>
> TIA
> dillon
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:43 GMT-3