The MPLS WG Archive

[Robert Raszuk <raszuk@cisco.com>]

First let me clarify - that by the "route" you mean the customer
external not your peer's AS next hops. If that is the case I would not
talk about "redistribution" as this at least to me means transfer a
route from one routing protocol to the other but the more appropriate
term would be "propagate" as all we are talking about here is a
EBGP/IBGP propagation. 

So to answer your question about next hop both scenarios are possible
and adopted. In the small Inter-AS architectures where number of
inter-as routes does not exceed the capacity of edge box setting next
hop on the edge is fine. When a number of routes grow and your vpnv4
ebgp session is being extended from vpnv4 RRs then setting nhs on them
would not be advisable.

R.

> Radha PK wrote:
> 
> Hi,
> When a labelled route is received (by an ASBR) from a peer in a different AS, the route is redistributed into the AS.
> During this redistribution, the NextHop (to the address of ASBR doing the redistribution) and also the label could be changed
> Or
> Just redistribute the label and the route as they were received from the ASBR.
> 
> Could anyone suggest me as to which of these are usually adopted?
> Pls correct me if my interpretations are wrong.
> 
> With Regards.
> Radha
> 
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