Hi Ali, Thanks for your information. I scanned through this draft, it really introduces inter-chassis message for DF election handshaking, the requirements in this draft is to eliminate transiet Loop and traffic duplication. Current EVPN DF election mechanism already eliminated loop and traffic duplication by configuring long reception timer on each multi-homed PE, but up to reception timer traffic disruption issue still exist. EVPN for DCI is an important use case for EVPN, up to reception timer traffic disruption can't be tolerated for service providers, it should be improved.
Also for accuracy, i think handshaking state machine on each multi-homed PE is also needed. From solution perspective, in my draft, no inter-chassis message is introduced, only one new extended community is introduced, i think the process is comparatively simple than your following draft. Current EVPN DF election has some drawbacks, so there are three new drafts about DF election emerged. I think BESS WG can consider these three drafts in global view, a single,comprehensive new DF election draft is hoped. thanks. Thanks, weiguo ________________________________ From: BESS [[email protected]] on behalf of Ali Sajassi (sajassi) [[email protected]] Sent: Thursday, March 26, 2015 0:21 To: [email protected] Subject: [bess] Handshaking among PEs in an EVPN ES based on Paxos algorithm FYI- First published July 4, 2011 https://datatracker.ietf.org/doc/draft-sajassi-l2vpn-evpn-segment-route/ -Ali
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