Stack port acl and spanning tree

[bravenet12]

I have a pair of 3750-x switches stacked together. Using spanning tree with our upstream provider I have an active line in port GigE 1/0/25 and a blocked redundant line in GigE 2/0/25. I have setup a port based acl as below on 1/0/25 which is a port on the current master switch. Do I need to manually set this on 2/025 as well? Just wondering what would happen if the line to the master switch was to disappear or if the master disappeared completely whether the acl would automatically be applied to 2/0/25. Thanks

interface GigabitEthernet1/0/25

ip access-group Main in

[Jon Marshall · Accepted solution]

Graham

You should apply it to the gi2/0/25 port connection as well because certainly if the line went down it would not automatically propogate this to the other port.

So yes apply it both.

Jon

[bravenet12]

Thanks Jon - verifed in our testing.