What is meant by routing header ?

K SrinivasRao <srinu@trinc.com> Thu, 09 April 1998 17:19 UTC

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Date: Thu, 09 Apr 1998 12:50:17 +0500
To: kent@bbn.com
From: K SrinivasRao <srinu@trinc.com>
Subject: What is meant by routing header ?
Cc: ipsec@tis.com
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Hello,

With respect to the draft-ietf-ipsec-arch-sec-04.txt

section 5.1.2.1 IPv4 -- Header Construction for Tunnel Mode

protocol         AH, ESP, routing hdr         no change

The protocol field of the outer is filled with AH or ESP depending on the
SA that has been selected. But the SA can have IPsec protocol as either
AH/ESP. I didn't get where the concept of routing will come in picture. Can
any one clarify how we will conctruct the outer header *protocol* field.
And where does the concept of routing header will come in picture. Note
that this is in IPv4.

Thank U 

SrinivasRao. B. Kulkarni                             
Rendezvous On Chip Pvt Ltd.
First Floor, Plot No. 14,
NewVasaviNagar, Kharkhana,
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Ph : (040)7742606
email address : srinu@trinc.com

What is meant by routing header ? K SrinivasRao