[c-nsp] MPLS FRR with auto-bw

[Benjamin Lovell]

I have never tried to solve this exact issue but you could try using  
the priority values to prevent the backup tunnel from preempting  
others on that path. I am not sure if these values are honored during  
FRR but you could give it a shot.

-Ben


On Nov 16, 2010, at 11:00 AM, Vitaliy Karlov wrote:

> Hello,
>
> Lets say we have a MPLS-enabled triangle:
>
> http://i54.tinypic.com/k2lcw2.jpg
>
> Path AB is being crossed by a couple of MPLS TE Tunnels within  
> automatic bandwidth adjustment (tunnel mpls traffic-eng auto-bw). At  
> the any given point of time summary bandwidth of these tunnels is  
> never exceeded the capacity of the part AB. So bandwidth requests by  
> these tunnels are always satisfied.
>
> Also, assume that there is a tunnel AC with explicit path option.  
> The total bandwidth for this tunnel is unknown and is requested by  
> automatic bandwidth adjustment every 5 min as well.
>
> The question is, is there any way to provide backup facility for  
> path AC via path ABC only if enough bandwidth available at the path  
> AB. For simplicity assume that at the path BC bandwidth is always  
> available.
>
> In case the hardware makes sense, it is 6500 with SXH.
>
> Thanks.
>
>
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