Cell Relay Archive

[Archana Nehru <archie@trillium.com>]

I have a few questions about NHRP Server. I appreciate any
clarifications .

1.My first question is regarding the "NHRP Error Indication".
  Let us consider the following scenario:
  NHC------>NHS1----->NHS2----->NHS3

  For the above picture ,if NHC generates a packet, and during the
  process of forwarding the packet, if the authentication between 
  NHS2 and NHS3 fails, an error indication is sent to the protocol
  address which generated the packet.For the above case this would
  mean that NHS3 sends "error indication" to NHC.
  (refer to section5.2.7 of RFC 2332)

  While I understand the need to inform the NHC about the failure,
  to forward its packets, how does NHS3 convey to NHS2 about such
  failures so that a remedial action can be taken?

2.This is regarding the 'NHRP authentication extension".
  According to the section 4.5.2.5 of the MPOA specs,
  "if an MPS/NHS discovers that the next hop for a NHRP packet
   is another MPS on a common ELAN,the NHRP message should be 
   forwarded to the control ATM address of the MPS".
 
   In such a scenario, is there any need to include the "authentication
   extension" in the NHRP packet. If yes, do we need to configure
   the "authentication information" for the neighbouring MPS statically?
   How is it done in the present implementations of MPS/NHS?

Regards
Archana   


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________________________________________________________________________
ARCHANA NEHRU                     :  Trillium Digital Systems, Inc 
E-mail: archie@trillium.com       :  Los Angeles, California     
Phone: +1 310 442 9222     
________________________________________________________________________