From: Godswill Oletu (oletu@inbox.lv)
Date: Thu Nov 10 2005 - 22:46:03 GMT-3
Leigh,
That is true, I didn't catch that.
----- Original Message -----
From: "Leigh Harrison" <ccileigh@gmail.com>
To: "Godswill Oletu" <oletu@inbox.lv>
Cc: <dusth@comcast.net>; <ccielab@groupstudy.com>
Sent: Friday, November 11, 2005 9:04 AM
Subject: Re: BGP and Tunnel
> Quick note - if you do put that route in, the tunnel will collapse...
> As it'll think the destination of the tunnel is down the tunnel...
>
> Give the tunnel an ip address and peer with that as a test.
>
> LH
>
> Godswill Oletu wrote:
>
> >Dustine,
> >
> >nei 4.4.4.4 update-source loopback0
> >
> >Tell this router that, when it is negotiating bgp session with neighbor
> >4.4.4.4, it should present the ip address on interface loopback0 as its
> >source address.
> >
> >If you debug bgp on this router or on the remote router, you will
discover
> >that this router is actually using the ip address of loopback0 as its
source
> >address.
> >
> >But for this router to reach neighbor 4.4.4.4, it will go to your IGP
> >routing table and pick the next hop address to reach 4.4.4.4 and will
send
> >the traffic to neighbor 4.4.4.4 through the next hop address in your
> >routing table. If that next hop address is through the tunnel14, then the
> >traffic will go through the tunnel14 interface.
> >
> >So, the answer to your question will a No.
> >
> >But if you do "ip route 4.4.4.4 255.255.255.255 tunnel 14'
> >
> >Then, bgp traffic will attempt to reach neighbor 4.4.4.4 via tunnel 14.
> >
> >HTH
> >Godswill Oletu
> >
> >
> >----- Original Message -----
> >From: <dusth@comcast.net>
> >To: <ccielab@groupstudy.com>
> >Sent: Thursday, November 10, 2005 7:05 PM
> >Subject: BGP and Tunnel
> >
> >
> >
> >
> >>Hi all, I need some clarification on how does bgp know to traverse
inside
> >>
> >>
> >the tunnel and what parameter of the tunnel interface tell that for bgp
end
> >points? I do not have access to the lab right now so I can not verify the
> >config.
> >
> >
> >>Here is the example:
> >>r1:
> >>interface tunnel 14
> >> ip unnumber loopback 0
> >> tunnel source 1.1.1.1
> >> tunnel destination 4.4.4.4
> >>bgp 10
> >> nei 4.4.4.4 remote-as 10
> >> nei 4.4.4.4 update-source loopback0
> >>Does the ip unnumber of the tunnel or the tunnel source & destination
tell
> >>
> >>
> >router that bgp traffic need to traverse inside the tunnel?
> >
> >
> >>Thanks in advance,
> >>Dustin
> >>
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> >>
> >
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