The MPLS WG Archive

[Robert Raszuk <raszuk@cisco.com>]

Manoj,

One application of route pinning I know of being used is following:

* Establishment of TE-LSPs with dynamic path options (ERO calculated on
the headends with cspf)
* Recording the routes from RROs (route pinning)
* Setting explicit TE-LSPs with the recorded EROs.

I don't know of any use of signalled "route pinning" as you are
describing below.

R.

> manoj juneja wrote:
> 
> Hi All,
>         Is anybody using Route Pinning in the MPLS network ? If yes, what
> are the benefits of using route pinning ?
> Is route pinning applicable once the CR-LSP gets established ?
> 
> Following is my understanding regarding Route pinning :
> 
> Please correct me if I am wrong.
> 
> Once the LSP gets established and then afterwards if better nexthop
> becomes available and route pinning is requested along the path, u don't
> change the CR-LSP path (only the loosely routed portion of LSP).
> 
> Is the nexthop change procedure same for both LSP and CR-LSP ?
> 
> Is there any option in LDP that once a LSP gets established and subsequent
> better next-hop changes should be rejected (like route pinning in LDP
> inaddition to CR-LDP)?
> 
> Thanks,
> manoj.
> 
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