TRILL Working Group Radia Perlman
INTERNET-DRAFT Intel Labs
Intended status: Proposed Standard Anil Rijhsinghani
HP Networking
Donald Eastlake
Huawei
Ayan Banerjee
Insieme
Dinesh Dutt
Cumulus
Expires July 3, 2014 January 4, 2014
TRILL: Campus Label and Priority Regions
<draft-ietf-trill-rbridge-vlan-mapping-10.txt>
Abstract
Within a TRILL campus, the data label (VLAN or Fine Grained Label)
and priority of TRILL encapsulated frames is preserved. However, in
some cases it may be desired that data label and/or priority be
mapped at the boundary between regions of such a campus. This
document describes an optional TRILL switch feature to provide this
function.
Status of This Memo
This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79.
Distribution of this document is unlimited. Comments should be sent
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R. Perlman, et al. [Page 1]INTERNET-DRAFT TRILL: Label and Priority RegionsTable of Contents
1. Introduction............................................3
1.1 TRILL Campus Regions...................................4
1.2 Terminology............................................5
2. Internal and Cut Set Configuration and Mappings.........6
2.1 Multiple Crossings.....................................7
2.2 Native Frame Considerations............................8
2.3 More than Two Regions..................................8
2.4 Mapping Implementation.................................9
3. End Node Address Learning Between Regions..............11
4. Cut Set Attraction of Labels and Multicast.............12
5. Advertisement of Label and Priority Mappings...........13
6. IANA Considerations....................................13
7. Security Considerations................................13
8. Normative References...................................14
9. Informative References.................................14
Appendix Z: Change Summary................................15
Authors' Addresses........................................18
R. Perlman, et al. [Page 2]INTERNET-DRAFT TRILL: Label and Priority Regions1. Introduction
The IETF TRILL protocol provides transparent forwarding, with a
number of additional features, by use of link state routing and
encapsulation with a hop count as specified in [RFC6325] [RFC6327bis]
[RFCclear] and [RFCfgl].
Devices implementing the TRILL protocol are called TRILL switches or
RBridges (Routing Bridges). A TRILL campus is an area of TRILL
switches and possibly bridges bounded by and interconnecting end
stations and Layer 3 routers, analogous to a customer bridge LAN
(which is an area of bridges interconnecting end stations, Layer 3
routers, and TRILL switches). In a TRILL campus, native frames (as
defined in [RFC6325]), when they arrive at their first or ingress
RBridge, are encapsulated, routed in encapsulated form via zero or
more transit TRILL switches, and finally decapsulated and delivered
by their egress TRILL switch or switches.
TRILL switch ports have some features specified in IEEE 802.1Q as
described in [RFC6325], with TRILL being implemented above those
ports. Such ports provide for the association of incoming frames with
datatracker.ietf.org