From: Rado Vasilev (decklandv@gmail.com)
Date: Sun Jun 22 2008 - 08:29:54 ART
Hi Group,
I've a general question re the general way TE tunnels work.
I'm working on a IEWB vol2 task 4.4/Lab 5. Basically a simple TE tunnel
is created but autoroute announce is not allowed:
nterface Tunnel14
ip unnumbered Loopback0
tunnel destination 124.1.1.1
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng priority 7 7
tunnel mpls traffic-eng bandwidth 2500
tunnel mpls traffic-eng path-option 1 explicit name R4_R1
no routing dynamic
end
In order to use the tunnel I've configured a static route:
ip route 124.1.1.1 255.255.255.255 Tunnel14
Basically we want to use the tunnel for the remote PE's loopback
address. Now this is what confuses me a lot re TE tunnels, as that
loopback happens to be the tunnel's destination.
I've got the feeling this is kinda taken care of by the MPLS labels so
the tunnel won't go down (and up and so on) as it happens when we have
normal recursive issue in non-MPLS configurations.
I'd be grateful if anyone on the list with more experience could explain
how is this taken care by IOS so that the routing the tunnel destination
through the tunnel works.
Thanks,
Rado
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