[j-nsp] [c-nsp] LACP between router VMs (James Bensley)

Vincent Bernat bernat at luffy.cx
Sat Dec 2 06:17:16 EST 2017


 ❦  1 décembre 2017 21:43 -0800, Chris Burton <chris.burton at speakeasy.net> :

> LACP and LLDP (and the like) are link local only protocols (would need
> to dig through the specifications to find the exact rules), they
> should not be forwarded by the bridge

802.1Q-2005, 8.6.3 and 8.13.4. However, some bridges are allowed to
forward those frames: two port mac relays can forward frames when
destination is 01-80-C2-00-00-03 (802.1Q-2011, dunno which part since
it's not freely available) and QinQ bridges can forward frames when the
destination is 01-80-C2-00-00-00 (LLDP frames can use those MAC
addresses since 802.1AB-2009, dunno if there is something similar for
LACP).
-- 
Use the fundamental control flow constructs.
            - The Elements of Programming Style (Kernighan & Plauger)


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