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[OSPF] What is the use of MTU field in DD packet

"Prasanna Kumar A.S" <sprasanna@juniper.net> Wed, 28 May 2008 12:18 UTC

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From: "Prasanna Kumar A.S" <sprasanna@juniper.net>
To: OSPF List <ospf@ietf.org>
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Subject: [OSPF] What is the use of MTU field in DD packet
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Hi
  I just wanted to understand what the primary use of exchanging MTU in
DD packets and doing MTU-check is? Is it only for the control plane or
is it for the DATA-plane?

Why I am getting this doubt is, in draft-ietf-ospf-af-alt-06.txt doesn't
specify which MTU we should use while exchanging the DD packet for the
ipv4-unicast or ipv4-mutlticast Address-family, is it ipv6-mtu or
ipv4-mtu?


Regards
Prasanna 
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