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ASA: redundant interface

Hello

Cisco documentation is unclear:

if i have two members in redundant interface both connected to the same switch/vlan, on switch both ports are UP (no shut),

what is a state of physical interfaces on ASA ?

Are both ports UP ? Or ASA shutdown one of the interfaces ? (backup interface)

If both ports are physically UP what traffic is send thru backup interface ?

In case of both ports UP how does the switch know which port is actually working (in case of initiation new flow from switch side, with new/uknown destination mac-address) ?

Thanx

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Cisco Employee

ASA: redundant interface

Both Interfaces will have the same mac-address but only one will actually pass traffic, so at some point, I think you would be able to see 2 mac-addresses learned on two different ports, hence, the traffic is going to be sent by the switch to both interfaces, of course, only one will actually process the traffic on the ASA.

Mike

Mike
1 REPLY
Cisco Employee

ASA: redundant interface

Both Interfaces will have the same mac-address but only one will actually pass traffic, so at some point, I think you would be able to see 2 mac-addresses learned on two different ports, hence, the traffic is going to be sent by the switch to both interfaces, of course, only one will actually process the traffic on the ASA.

Mike

Mike
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