rsvp-te admission control - i don't see it

Fri Sep 4 03:57:57 UTC 2020

On 3/Sep/20 22:20, aaron1 at gvtc.com wrote:

> Thanks, how do I see the control plane reservation?  I don’t seem to
> be seeing anything getting allocated
>
>  
>
> RP/0/0/CPU0:r20#sh rsvp interface g0/0/0/1
>
> Thu Sep  3 15:15:55.825 CST
>
>  
>
> *: RDM: Default I/F B/W % : 75% [default] (max resv/bc0), 0% [default]
> (bc1)
>
>  
>
> Interface                 MaxBW (bps)  MaxFlow (bps) Allocated
> (bps)      MaxSub (bps)
>
> ------------------------- ------------ -------------
> -------------------- -------------
>
> GigabitEthernet0/0/0/1             1M             1M             0 ( 
> 0%)            0
>
>  
>
> RP/0/0/CPU0:r20#sh rsvp interface summary                      
>
> Thu Sep  3 15:16:57.131 CST
>
>  
>
> Interface          MaxBW (bps) Allocated (bps) Path In Path Out Resv
> In Resv Out
>
> ------------------ ----------- --------------- ------- --------
> ------- --------
>
> Gi0/0/0/0                    0        0 (  0%)       1        0      
> 0        1
>
> Gi0/0/0/1                1000K        0 (  0%)       0        1      
> 1        0
>

You will only see allocations once you have TE tunnels (sessions)
actually setup.

Without tunnels setup, but RSVP-TE enabled on the interfaces, all you
will see the maximum bandwidth that RSVP-TE can allocate across said
interfaces.

Remember that RSVP-TE is purely control plane. So it doesn't matter if
you signal an LSP with 10Mbps or 10Gbps. It will not determine whether a
link (or LSP) will actually pass 10Mbps or 10Gbps worth of traffic. It's
just a reference.

Back when I used to RSVP-TE, I'd signal 10Gbps links as 10Mbps. That
gave me plenty of granularity to scale up without having an unwieldy
configuration.

Mark.
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