[c-nsp] MPLS TE explicit-path: secondary ip as next-address

Artyom Viklenko artem at viklenko.net
Tue Feb 5 04:34:48 EST 2013

05.02.2013 11:10, Adam Vitkovsky пишет:
> Oh my, please why haven't you used loopback addresses in the path objects?
> -do you have multiple ip mpls links between two routers and would like to
> use a specific one (other than igp best path)?

Yes, Adam. We have several links. And plain IGP doesn't help in some 
cases. TE tunnels helps us to share load and choose specific route
for particular service. So yes, we need to use hop-by-hop explicit

> adam
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Artyom Viklenko
> Sent: Tuesday, February 05, 2013 8:41 AM
> To: 'cisco-nsp at puck.nether.net'
> Subject: [c-nsp] MPLS TE explicit-path: secondary ip as next-address
> Hi, List!
> We need to re-number several links of our MPLS backbone network due to some
> reason. And would like to minimize downtime.
> We have many MPLS TE tunnesl with explicit paths configured with old ips as
> next-address.
> New ip addresses was configured as secondary on interfaces in question.
> These new subnets (/30) appear in routing table, cef, etc. Network statement
> also was added to ospf configuration.
> Is it possible to somehow use these secondary ip as next-address in
> explicit-paths? I'm created another one explicit path and new tunnel
> interface but it's oper state is down and error is
> Last Error: PCALC:: Explicit path has unknown address, x.x.x.x
> This address is alive, it is in cef and mpls forwarding table.
> loose mode also doesn't help.
> So I think I can use only primary ip in explicit paths and can't find any
> klue regarding this. IOS 12.2(33)SRD6 ADVIPSERVICES.
> Googling also was helpless...
> Does anybody can sheed some light on it?
> Thanks in advance!
> --
> Sincerely yours,
>    Artyom Viklenko.
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Sincerely yours,
  Artyom Viklenko.

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