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Cell Relay Retreat>MPLS WG Archive>month:2001-Dec> msg00240



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MPLSOAM BOF meeting draft minutes

  • From: Shahram Davari <Shahram_Davari@pmc-sierra.com>
  • Date: Tue, 18 Dec 2001 06:36:55 -0800
  • Cc: Ping Pan <pingpan@juniper.net>, "Ash, Gerald R (Jerry), ALCTA" <gash@att.com>, mpls@UU.NET

Curtis,

> 
> LSP Ping does not require an RSVP-TE reverse path.  The ICMP echo
> reply is delivered to the IP address of the sender.  Its and IP
> packet.  It doesn't need an LSP but if one is there it can use it.
> 
> Curtis
> 

I think you need to read the LSP-Ping draft one more time. I didn't say that
The ICMP echo reply needs RSVP-TE reverse path, rather the LSP-ping response requires
RSVP-TE reverse path. The reason is that it needs a disjoint path from the normal
IP hop-by-hop path, in order to determine that the ICMP-echo response path wasn't at fault.

-Shahram