[dhcwg] I-D Action:draft-ietf-dhc-l2ra-05.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Dynamic Host Configuration Working Group of the IETF.


	Title           : Layer 2 Relay Agent Information
	Author(s)       : B. Joshi, P. Kurapati
	Filename        : draft-ietf-dhc-l2ra-05.txt
	Pages           : 17
	Date            : 2011-04-06

In some networks, DHCP servers rely on Relay Agent Information option
appended by Relay Agents for IP address and other parameter
assignment policies.  This works fine when end hosts are directly
connected to Relay Agents.  In some network configurations, one or
more Layer 2 devices may reside between DHCP clients and Relay agent.
In these network scenarios, it is difficult to use the Relay Agent
Information option for IP address and other parameter assignment
policies effectively.  So there is a need for the device that is
closest to the end hosts to append a Relay Agent Information option
in DHCP messages.  These devices are typically known as Layer 2 Relay
Agents.

This document aims to describe the network scenarios where a Layer 2
Relay Agent is in use and also how it handles DHCP messages.

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