Re: [RRG] Long term clean-slate only for the RRG?

[Scott Brim <swb@employees.org>]

On 7/3/08 7:00 PM, William Herrin allegedly wrote:
> As for MPLS, who wants to argue that MPLS -is-not- a map-encap protocol? Not me.

There are some noticeable differences, mainly that the (current)
map-and-encap schemes use IP routing and forwarding as they are today.
There is no setup phase for encapsulating a packet, and a core
forwarder does not discriminate between an encapsulated packet and a
non-encapsulated packet.  With MPLS, forwarding depends on
pre-establishment of a path.  Labels have no topological significance
and are not forwardable until the per-label forwarding behavior is
installed in the nodes along a path.  They don't aggregate.


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