RE: [dhcwg] How should a DHCPv6 server respond to retransmitted p ackets

"Bernie Volz (EUD)" <Bernie.Volz@am1.ericsson.se> Fri, 25 October 2002 12:28 UTC

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From: "Bernie Volz (EUD)" <Bernie.Volz@am1.ericsson.se>
To: "'Raymond Jayaraj'" <raymondjayaraj@yahoo.com.sg>, dhcwg@ietf.org
Cc: jraymond@icr.a-star.edu.sg
Subject: RE: [dhcwg] How should a DHCPv6 server respond to retransmitted p ackets
Date: Fri, 25 Oct 2002 07:26:31 -0500
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This is implementation specific. It is important to respond.

Whether the server keeps an Transaction ID cache and responds from that or reprocesses the packet is really a server implementation issue.

- Bernie

-----Original Message-----
From: Raymond Jayaraj [mailto:raymondjayaraj@yahoo.com.sg]
Sent: Thursday, October 24, 2002 10:27 PM
To: dhcwg@ietf.org
Cc: jraymond@icr.a-star.edu.sg
Subject: [dhcwg] How should a DHCPv6 server respond to retransmitted
packets


Hi all,

How should a server respond to retransmitted packets
received after a
REPLY packet is sent, e.g.:

DHC6CLIENT      DHC6SERVER      INFOSERVER
|               |               (e.g. LDAP)
|               |               |
|1)INFO-REQ     |               |
|>>>            |               |
|   >>>         |               |
|      >>>      |               |
|         >>>   |               |
|            >>>|2)processing/retrieve info
|3)INFO-REQ     |>>>>>>>>>>>>>>>|
|>>>            |<<<<<<<<<<<<<<<|
|   >>>      <<<|               |
|      >>><<<   |               |
|      <<<>>>   |               |
|   <<<      >>>|               |
|<<< 4)REPLY    |5)???          |

What should (5) be? Should the server:

a) drop (3) and subsequent duplicates (base on
transaction id).

b) reprocess the request and retransmit the reply,
i.e. do (2)&(4)
   again.

c) retransmit the reply, i.e. do (4) again.

d) do any of the above (implementation specific).

No indication for the above could be found in the
draft. I suspect
it should be a) or d), but it'd be nice to know for
sure.

------------------------------------------------------------------------
Raymond J. Jayabal                 | ICR, A-STAR
jraymond@icr.a-star.edu.sg         | 20 Science Park
Rd #02-34/37
Tel: +65 6870 9330                 | Singapore 117674
------------------------------------------------------------------------




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