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ACL applied to Vlan interfaces

beckerola
Level 1
Level 1

I have been working with access lists for a while now and i think i have a good knowledge about them. But the thing i'm still confused with is when you apply ACL "in" and "out" to a SVI or lvna virtual interface.

It seems like in these type of interfaces the directions change completely compared to the normal interfaces (ethernet, serial... etc.) The logic is different and sometimes i find myself in problems when i have to do some troubleshooting in my work.

I've tryied to found some information or manuals on Cisco about this specific issue but unfortunely, i couldn't find anything clear.

Is there some method to quickly know when these ACL should be applied in one direction or another?

Thanks for your time.

1 Reply 1

glen.grant
VIP Alumni
VIP Alumni

It's no different on a SVI , "in" means coming in from the network (user ports) . "Out" means out towards the clients network.