[c-nsp] RSPAN 3750X (IP BASE) - Received Only Broadcast/Multicast - No Unicast :(

sthaug at nethelp.no sthaug at nethelp.no
Sun Apr 6 03:00:44 EDT 2014


> I received only broadcast/multicast traffic from remote RSPAN 3750X switch
> (L3, IP SERVICE) on my local 3750X switch (L2, IP BASE).

Sounds like your RSPAN VLAN has not been configured as "remote-span"
on all necessary switches. This is necessary in order to turn off MAC
address learning.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no


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