Download presentation
Presentation is loading. Please wait.
Published byLily Rogers Modified over 4 years ago
1
TRILL Header Extension Simplifications Donald Eastlake 3 rd Huawei Technologies d3e3e3@gmail.com 1July 2011
2
TRILL Data Frame Format 2 Link Specific Header TRILL Header Inner Ethernet DA Inner Ethernet SA Link Specific Trailer Payload VLAN Tag Inner Frame Header Extensions July 2011
3
Table of Contents Current Header Extensions/Options – draft-ietf-trill-rbridge-options-05.txt Proposed Changes Summary of Proposal 3July 2011
4
Current TRILL Header 4 Flags OpLen Hops Nicknames | | Flags. TLV Extensions Critical Summary bits indicate if it is safe for a transit or egress RBridge that does not implement any extensions to process the frame. Flow ID More Flags July 2011
5
Current Header Extensions First 32 Bits Present if Ext/OpLng in TRILL Header > 0 5 Flow ID, Non-zero if valid C. H-b-H Bits Critical Hop-by-Hop Summary Bit Critical Ingress-to-Egress Summary Bit More Extended Flags Critical Ingress-to-Egress TLV Option Present Non-Critical Ingress-to-Egress TLV Option Present Non-Critical Hop-by-Hop TLV Option Present NC. H-b-H Bits C. I-t-E Bits NC. I-t-E Bit Specified in base protocol Alert ECN July 2011
6
Current Header Extensions Second 32 Bits If More Extended Flags bit is a one, there are 4 bytes of additional extended header flags as follows: Non-Critical Ingress-to-Egress Critical Ingress-to-Egress Non-Critical Hop-by-Hop Critical Hop-by-Hop 6July 2011
7
Current TLV Format Format of TLV Extensions Value …….. Length in 4-Byte Units Type Mutable Non-Critical Ingress-to-Egress 7July 2011
8
Table of Contents Current Header Extensions/Options Proposed Changes Summary of Proposal 8July 2011
9
Proposed TRILL Header 9 Flags OpLen Hops Nicknames | | | | Flags. TLV Options Critical Summary bits indicate if it is safe for a transit, egress, or border RBridge that does not implement any extensions to process the frame. AlertECN July 2011
10
Proposed Header Extended Flag Bits Present if Ext/OpLng in TRILL Header > 0 10 C. H-b-H Bits Critical Hop-by-Hop Summary Bit Critical Ingress-to-Egress Summary Bit Critical Border RBridge Summary Bit NC. H-b-H Bits C. I-t-E Bits NC. I-t-E Bit Specified in base protocol Alert July 2011 NC. Border Bits C. Border Bits ECN
11
Proposed TLV Format Format of TLV Extensions Value …….. Length in 4-Byte Units Type Mutable Non-Critical 11July 2011 0 – hop-by-hop 1 – border RBridge 2 – ingress-egress 3 – reserved
12
Table of Contents Current Header Extensions/Options Proposed Changes Summary of Proposal 12July 2011
13
Proposed Actions Drop Flow-ID Field for now Drop 2 nd 32-bits of Extended Flags Add border summary bit and TLV extension bit to accommodate possible future extension of TRILL to multi-level Issue Working Group Last Call 13July 2011
14
END Donald Eastlake 3 rd Huawei Technologies d3e3e3@gmail.com 14July 2011
Similar presentations
© 2018 SlidePlayer.com Inc.
All rights reserved.
Ppt on bluetooth broadcasting software Ppt on business model of dell Ppt on tamper resistant bolts Ppt on nuclear family vs joint family Ppt on hotel industry in india 2012 Ppt on interest rate parity Ppt on brushless dc motor Download ppt on android operating system Ppt on conservation of ocean resources A ppt on pollution