[j-nsp] cspf to secondary loopback

Harry Reynolds harry at juniper.net
Tue Jul 19 11:31:43 EDT 2005


Working as designed. A secondary loopback address is not advertised into
the TED. 

HTHs
 

> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Armin Arh
> Sent: Tuesday, July 19, 2005 7:59 AM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] cspf to secondary loopback
> 
> Hi,
> 
> i had recently some problems with RSVP.
> We run OSPF with TE enabled on all boxes.
> I want to set up a RSVP- signalled LSP from Router A to Router B.
> (Juniper M40, M20, both Junos 6.4)
> 
> Setting up a LSP is normally not a problem, but in this 
> special case the destination is not the regular loopback of 
> Router B, but a secondary one.
> 
> In the following example "to-primary-loopback" comes up, but 
> "to-secondary-loopback" does not. Router A says "CSPF failed":
> 
> armin at Router-A> show mpls lsp extensive
> Ingress LSP: 1 sessions
> 
> 10.0.0.13
>   From: 10.0.0.1, State: Dn, ActiveRoute: 0, LSPname: 
> to-secondary-loopback
>   ActivePath: (none)
>   LoadBalance: Random
>   Encoding type: Packet, Switching type: Packet, GPID: IPv4
>   Primary                    State: Dn
>     SmartOptimizeTimer: 180
>     Will be enqueued for recomputation in 22 second(s).
>     1 Jul 19 15:27:37 CSPF failed: no route toward 10.0.0.13[2 times]
>   Created: Tue Jul 19 15:27:06 2005
> Total 1 displayed, Up 0, Down 1
> 
> 
> /* Config on Router A: */
> protocols {
>     mpls {
>         traffic-engineering bgp;
>         label-switched-path to-primary-loopback {
>             from 10.0.0.1;
>             to 10.0.0.2;
>         }
>         label-switched-path to-secondary-loopback {
>             from 10.0.0.1;
>             to 10.0.0.13;
>         }
>     }
> }
> 
> /* Config on Router B: */
> interfaces {
>     lo0 {
>         unit 0 {
>             family inet {
>                 address 127.0.0.1/32;
>                 address 10.0.0.2/32;
>                 /* Alternative Loopback for traffic engineering */
>                 address 10.0.0.13/32;
>             }
>         }
>     }
> }
> 
> 
> Setting an explicit path and "no-cspf" gives me a working 
> lsp, but using cspf would be really nice.
> OSPF TE Database does not contain 10.0.0.13, but i think it should.
> 
> Bug in Junos?
> General limitation of rsvp?
> 
> Thx. and bye,
> 
> 	Armin
> 
> --
> Armin Arh
> Schlund + Partner AG
> 



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