Virtual Subnet Selection Sub-Option for the Relay Agent Information Option for DHCPv4

Document Type Expired Internet-Draft (dhc WG)
Authors Jay Kumarasamy  , Richard Johnson  , Mark Stapp  , Kim Kinnear 
Last updated 2007-12-18
Stream Internent Engineering Task Force (IETF)
Intended RFC status (None)
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired
Consensus Boilerplate Unknown
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


In some environments, a relay agent resides in a network element which also has access to one or more virtual private networks (VPNs). If a DHCP server wishes to offer service to DHCP clients on those different VPNs the DHCP server needs to know information about the VPN on which each client resides. The Virtual Subnet Selection sub- option of the relay-agent-information option is used by the relay agent to tell the DHCP server important information about the VPN (called the Virtual Subnet Selection information, or VSS) for every DHCP request it passes on to the DHCP server, and is also used to properly forward any DHCP reply that the DHCP server sends back to the relay agent.


Jay Kumarasamy (
Richard Johnson (
Mark Stapp (
Kim Kinnear (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)