[dhcwg] How should a DHCPv6 server respond to retransmitted packets

Raymond Jayaraj <raymondjayaraj@yahoo.com.sg> Fri, 25 October 2002 03:31 UTC

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From: =?iso-8859-1?q?Raymond=20Jayaraj?= <raymondjayaraj@yahoo.com.sg>
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Subject: [dhcwg] How should a DHCPv6 server respond to retransmitted packets
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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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