Skip to main content

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

Document Type Expired Internet-Draft (dhc WG)
Expired & archived
Authors Jay Kumarasamy , Richard A. Johnson , Mark Stapp , Kim Kinnear
Last updated 2007-12-18
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


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 A. Johnson
Mark Stapp
Kim Kinnear

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