Universal Plug and Play (UPnP) Internet Gateway Device - Port Control Protocol Interworking Function (IGD-PCP IWF)

Abstract

Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6970.

Port Control Protocol (PCP) Extension for Port-Set Allocation

“…As a reminder, PREFER_FAILURE was specifically designed for the Universal Plug and Play (UPnP) Internet Gateway Device -Port Control Protocol Interworking Function (IGD-PCP IWF) [RFC6970]. The reasons for not recommending the use of PREFER_FAILURE are discussed in Section 13.2 of [RFC6887].…”

Port Control Protocol (PCP) Third-Party ID Option

“…It has a carrier operating a CGN and a Port Control Protocol Interworking Function (PCP IWF) [RFC6970] for subscribers to request port mappings at the CGN. The PCP IWF communicates with the CGN using PCP.…”

“…This requires that the subscriber can connect to the UPnP IGD-PCP IWF to request port mappings at the CGN using UPnP-IGD as specified in [RFC6970]. In this scenario, the connection is provided via (one of the) tunnel(s) connecting the subscriber's network to the Broadband Remote Access Server (BRAS) and an extension of this tunnel from the BRAS to the UPnP IGD-PCP IWF.…”

“…The UPnP IGD-PCP IWF queries the AAA server for the ID of the tunnel between BRAS and CGN, because this is the identifier to be used as the THIRD_PARTY_ID option in the subsequent port mapping request. | | CPE A potential extension to [RFC6970] regarding an additional state variable for the THIRD_PARTY_ID option and regarding an additional error code for a mismatched THIRD_PARTY_ID option and its processing might be a logical next step. However, this is not in the scope of this document.…”

Description Option for the Port Control Protocol (PCP)

“…This PCP option can be used in simple scenarios with a PCP client and PCP server, as well as in more complex scenarios where an interworking function is used to proxy between a UPnP IGD Control Point and a PCP server [RFC6970].…”