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doubt in draft-ietf-mpls-ftn-mib-07.txt

  • From: "ramasamy ramanathan" <ramsrm@tdd.sj.nec.com>
  • Date: Mon, 28 Jul 2003 19:16:12 -0700
  • Importance: Normal

hi all,

   I have a doubt in mpls ftn mib draft( draft-ietf-mpls-ftn-mib-07.txt),
could u please explain me?

* mplsFTNActionType can take either redirectLSP or redirectTunnel. If
redirecTunnel is specified, then actionptr will point to mplsTunnelEntry. So
while forwarding the packets,  mplsXCPtr which is there inside
mplsTunnelEntry is taken and then packet will be switched accordingly. If
the Action type is redirectLSP then ActionPtr points to mplsXCEntry
directly. so while forwarding this will be directly referred.

If my above assumption is correct, what is the use of specifying type as
redirectTunnel? In either case mplsXCptr will be used for switching right,
so why can't it point to mplsXCEntry always, what is the use of it pointing
to redirectTunnel?

If my assumption is not correct, what is the difference between redirectLSP
and redirectTunnel, and in what scenario each of these types will be used?

thanks
rams.