[j-nsp] RSVP/MPLS question

Fri Feb 2 16:45:32 EST 2007

Hi,

 It's (at least for me) hard to guess without relevant configuration
information for your 'core' interfaces and protocols
mpls/rsvp/ospf/is-is section.

 The reason CSPF information is missing is usually eighter reservation
problems (not enough bandwith). Also, if you're using OSPF as igp for
example, you'll need to enable 'traffic-engineering' in all nodes.

HTH

On 2/2/07, Amos Rosenboim <amos at oasis-tech.net> wrote:
> Hi,
>
> I'm trying to enable MPLS in a small service provider network.
> The network consists of 4 M10i routers, and 1 ERX router.
> The ERX is out of the scope for the moment, and first stage was to
> configure RSVP and MPLS on the M series routers, and to create a full
> mesh of LSP.
> The topology is described in the below drawing:
>
> R1-----3 X E1------R2------Ethernet (VLAN on a GigE interface)------
> R3----------T3------------R4
>
>
>
> All is working well between R4, R3, and R2.
>
> However, all LSP from R1, except for the one to R2 are down.
> The failed LSP at R1 shows:
> CSPF failed: no route toward 217.69.0.4[4873 times]
>
> While:
> oasis at M10i-THESS1-re0> show route 217.69.0.4
>
> inet.0: 126 destinations, 131 routes (126 active, 0 holddown, 0 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 217.69.0.4/32      *[OSPF/150] 1d 11:16:33, metric 5, tag 0
>                        via e1-1/3/0.0
>                      > via e1-1/3/2.0
>                        via e1-1/3/4.0
>
> inet.3: 108 destinations, 109 routes (108 active, 0 holddown, 0 hidden)
> + = Active Route, - = Last Active, * = Both
>
> 217.69.0.4/32      *[OSPF/150] 1d 10:17:08, metric 5, tag 0
>                      > via e1-1/3/0.0, label-switched-path To-ATH
>
>
> Also, RSVP is acting very strange over the 3 X E1 lines between R1
> and R2.
> First, when we configured all 3 E1 for RSVP, only two neighbors came
> up. After few clear RSVP session commands the third neighbor came up.
> Then, there are only active RSVP sessions between R1 and R3 and R4,
> only with R2.
>
> Then we disabled RSVP on 2 of the E1 lines and stayed with just one,
> but R2 still showed 3 RSVP neighbors. Their idle time increase but
> they are staying "up" although RSVP is no longer configured on those
> interfaces.
> When tracing RSVP on R2 we also get:
>
> Feb  1 12:05:35.602215 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.149->217.69.0.150 Len=8 e1-0/3/2.0
> Feb  1 12:05:59.356492 RSVP recv PathErr 217.69.0.134->217.69.0.133
> Session preempted LSP TO-THESS-FROM-ATH(12/44544)
> Feb  1 12:05:59.356646 RSVP PathErr to client PathErr 217.69.0.134-
>  >217.69.0.133 Len=144
> Feb  1 12:06:10.635236 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.145->217.69.0.146 Len=8 e1-0/3/1.0
> Feb  1 12:06:35.617397 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.149->217.69.0.150 Len=8 e1-0/3/2.0
> Feb  1 12:07:10.650408 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.145->217.69.0.146 Len=8 e1-0/3/1.0
> Feb  1 12:07:35.632545 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.149->217.69.0.150 Len=8 e1-0/3/2.0
> Feb  1 12:08:10.665565 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.145->217.69.0.146 Len=8 e1-0/3/1.0
> Feb  1 12:08:31.729494 RSVP recv PathErr 217.69.0.134->217.69.0.133
> Session preempted LSP TO-THESS-FROM-ATH(12/44544)
> Feb  1 12:08:31.729601 RSVP PathErr to client PathErr 217.69.0.134-
>  >217.69.0.133 Len=144
> Feb  1 12:08:35.647708 RSVP error, send to DISABLED interface? Hello
> New 217.69.0.149->217.69.0.150 Len=8 e1-0/3/2.0
>
>
>
> R2 is running :
> Model: m10i
> JUNOS Base OS boot [7.5R1.12]
> JUNOS Base OS Software Suite [7.5R4.4]
> JUNOS Kernel Software Suite [7.5R4.4]
> JUNOS Packet Forwarding Engine Support (M7i/M10i) [7.5R4.4]
> JUNOS Routing Software Suite [7.5R4.4]
> JUNOS Online Documentation [7.5R4.4]
> JUNOS Crypto Software Suite [7.5R4.4]
>
> R1 is running:
> Model: m10i
> JUNOS Base OS boot [7.5R4.4]
> JUNOS Base OS Software Suite [7.5R4.4]
> JUNOS Kernel Software Suite [7.5R4.4]
> JUNOS Packet Forwarding Engine Support (M7i/M10i) [7.5R4.4]
> JUNOS Routing Software Suite [7.5R4.4]
> JUNOS Online Documentation [7.5R4.4]
> JUNOS Crypto Software Suite [7.5R4.4]
>
>
>
> All the documentation i could find refers to the cspf no route error
> message of the LSP as there is really no route, however, in this case
> it seems that there is a route.
>
>
> I'm suspecting it's either something with the  3 x E1 connection, or
> RSVP issue, but I can't really fix it.
>
> Any help will be welcomed.
>
>
> Amos Rosenboim
> CTO
> amos at oasis-tech.net
>
> www.oasis-tech.net
>
>
>
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>

-- 
Erdem