[j-nsp] Active Routes on LSP - troubleshooting

Jonas Frey jf at probe-networks.de
Thu Nov 4 12:12:48 EST 2004


Hi Jerome,

check:
show route table inet.3 (contains all mpls routes)
or
show route table mpls.0

Regards,
Jonas

On Thu, 2004-11-04 at 18:01, Jerome Fleury wrote:
> Hi, 
> 
> I have a MPLS behavior which I'd like some Juniper guru to explain to me:
> 
> jfl at BB1.REI> show mpls lsp name BB1.REI-BB1.COU
> Ingress LSP: 35 sessions
> To              From            State Rt ActivePath       P     LSPname
> 212.129.9.7     212.129.9.38    Up  6416                  *     BB1.REI-BB1.COU
>                                     ^^^^
> It tells me that this LSP has 6416 Active Routes, which looks a bit too much to me, according
> to my limited MPLS setup. So I'm looking for those routes:
> 
> jfl at BB1.REI> show route next-hop 212.129.9.7 terse 
> (I suppose this is the right command)
> 
> inet.0: 155111 destinations, 309778 routes (155110 active, 0 holddown, 1 hidden)
> + = Active Route, - = Last Active, * = Both
> 
> A Destination        P Prf   Metric 1   Metric 2  Next hop        AS path
> * 62.4.0.0/19        B 170        100            >so-0/0/0.0      I
> * 62.210.0.0/16      B 170        100            >so-0/0/0.0      I
> * 83.152.0.0/13      B 170        100            >so-0/0/0.0      I
> * 194.149.160.0/19   B 170        100            >so-0/0/0.0      I
> * 195.154.0.0/16     B 170        100            >so-0/0/0.0      I
> * 212.47.224.0/19    B 170        100            >so-0/0/0.0      I
> * 212.62.128.0/18    B 170        100            >so-0/0/0.0      I
> * 212.83.128.0/18    B 170        100            >so-0/0/0.0      I
> * 212.129.0.0/18     B 170        100            >so-0/0/0.0      I
> * 213.36.0.0/16      B 170        100            >so-0/0/0.0      I
> * 213.195.0.0/18     B 170        100            >so-0/0/0.0      I
> 
> OK, I have 11 routes with this next-hop, so they are supposed to use this LSP.
> 
> 1/ why doesn't this command work:
> jfl at BB1.REI> show route label-switched-path BB1.REI-BB1.COU
> 
> it returns 0 route, when it should return at least 11 routes, shouldn't it ?
> 
> 2/ what are those 6416 routes that the first output indicates ?
> 
> 3/ What is the 'official' or 'recommended' way to look for those Active Routes ?
> 
> Any help on this appreciated.
> 
> Thanks.
> 
> Jerome.
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