I'm not sure if I follow you here. I believe the question has to do with how the
peering became established in the first place. Simply adding a neighbor statement to
a router in no way enables the router to find a route to that particular neighbor.
Actually, the issue of routing to remote neighbors is one of the main reasons why
IGPs are used in AS's.
*********** REPLY SEPARATOR ***********
On 2/25/2001 at 11:55 AM Groupstudy wrote:
>There would not be an IGP running between F and D or F and E. F only has a
>neighbor statement to D to allow it to establish a peering relationship with
>it. The neighbor 192.168.12.1 ebgp-multihop statement in F's BGP routing
>process allows this to work. There would not be a 192.168.12.0 network in
>F's routing table unless D has the statement 'network 192.168.12.0' in its
>own BGP routing process allowing it to advertise that network to other As'.
>
>
>----- Original Message -----
>From: Bradley J. Wilson <[EMAIL PROTECTED]>
>To: cisco <[EMAIL PROTECTED]>; Chris Williams
><[EMAIL PROTECTED]>; Neil Schneider <[EMAIL PROTECTED]>;
><[EMAIL PROTECTED]>; Jim Coyne <[EMAIL PROTECTED]>; Victor Alba
><[EMAIL PROTECTED]>; Jeff Assarian <[EMAIL PROTECTED]>; Phil Heller
><[EMAIL PROTECTED]>
>Sent: Sunday, February 25, 2001 10:40 AM
>Subject: EBGP multihop question
>
>
>> Take a look at Halabi (First Edition) p. 300, and riddle me this regarding
>> Figure 10-1:
>>
>> How does network 192.68.12.0 get into RTF's routing table? The EBGP
>session
>> needs to be established before RTF can accept any routes from RTD. But
>how
>> can the session be established before RTF knows how to route packets to
>RTD?
>>
>> The only thing I can think of would be a static route. There really is no
>> feasible way to run an IGP between RTF and that network. However, Halabi
>> doesn't include a static route in his configuration.
>>
>> (And if someone wants to post which page this is in the Second Edition,
>> please do. I'm thinking about buying it, but I'm too cheap at this point.
>> ;-)
>>
>> BJ
>>
>>
>>
>>
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