[dhcwg] I-D ACTION:draft-ietf-dhc-l2ra-04.txt

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A New Internet-Draft is available from the on-line Internet-Drafts 
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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-04.txt
	Pages		: 18
	Date		: 2009-4-21
	
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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