The MPLS WG Archive

["James R. Leu" <jleu@mindspring.com>]

On Wed, Jun 07, 2000 at 12:30:54PM -0700, Eric Gray wrote:

<snip>

> Of course it is not the only way.  For one thing,
> it is possible to configure this information.
> 
> (Bob does not have my warped sense of humor - if 
> he meant "required" he would not have said "useful")
> 
> > My goal is to get an answer about "non-Directly Connected 
> > LSRs" and how they guarantee that they are distributing 
> > labels and installing them on the correct interfaces.
> > 
> > The way to get the above answer may involve or mimic the way 
> > we deal with mappings over parallel links between two 
> > directly connected LDP peers.
> 
> There are numerous issues with this.  One of them is
> the assumption of multiple parallel links between two
> LDP peers - which necessarily implies the use of the
> platform wide label space (as Shahram points out).

Even though the downstream sessions uses a plateform wide label space that
STILL doesn't solve the problem when one of the upstream session receives a
mapping.  The upstream needs to decide if the downstream session that it
received the label from is running over the link that corresponds to the TRUE
next hop.

Jim
-- 
James R. Leu