[j-nsp] cspf to secondary loopback

Armin Arh armin at schlund.de
Tue Jul 19 10:59:19 EDT 2005


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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