The MPLS WG Archive

[Giles Heron <giles@packetexchange.net>]

just one nit...

On Mon, 2002-08-05 at 19:02, David Charlap wrote:
[snip]
> Lookup capability is also needed for a router (or interface) that must 
> pop the label stack.  It must do a label-lookup (which all switches can 
> do), but it must then pop the stack and then do an IP lookup on the 
> result before forwarding.  This is beyond the capability of most ATM 
> forwarding hardware.
[rest snipped]

this isn't strictly, true - is it?

in some cases you may pop the stack but then forward the IP payload
without actually performing an IP lookup (e.g. PHP).

Giles

-- 
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Giles Heron    Principal Network Architect    PacketExchange Ltd.
ph: +44 7880 506185              "if you build it they will yawn"
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