RFC 7783

Coordinated Multicast Trees (CMT) for Transparent Interconnection of Lots of Links (TRILL), February 2016

Canonical URL:
https://www.rfc-editor.org/rfc/rfc7783.txt
File formats:
Plain TextPDF
Status:
PROPOSED STANDARD
Updates:
RFC 6325
Authors:
T. Senevirathne
J. Pathangi
J. Hudson
Stream:
IETF
Source:
trill (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC7783

Discuss this RFC: Send questions or comments to trill@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF


Abstract

TRILL (Transparent Interconnection of Lots of Links) facilitates loop-free connectivity to non-TRILL networks via a choice of an Appointed Forwarder for a set of VLANs. Appointed Forwarders provide VLAN-based load sharing with an active-standby model. High-performance applications require an active-active load-sharing model. The active-active load-sharing model can be accomplished by representing any given non-TRILL network with a single virtual RBridge (also referred to as a virtual Routing Bridge or virtual TRILL switch). Virtual representation of the non-TRILL network with a single RBridge poses serious challenges in multi-destination RPF (Reverse Path Forwarding) check calculations. This document specifies required enhancements to build Coordinated Multicast Trees (CMT) within the TRILL campus to solve related RPF issues. CMT, which only requires a software upgrade, provides flexibility to RBridges in selecting a desired path of association to a given TRILL multi-destination distribution tree. This document updates RFC 6325.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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