ACLs on virtual interfaces
Posted on 2010-09-17
I have several VLANs defined on a stack of Cisco Catalyst 3750 switches. (Layer 3). IOS version is 12.2(25)SEE2)
I'm trying to do something that seems pretty simple, and I'm hopefully missing something obvious.
I want to prevent one VLAN from having any access to the other. (ip routing is turned on, and it needs to be on.) I followed another example I found online, and it seems like it should work. The config lines are below. I'm trying to prevent VLAN 99 from accessing VLAN 11 by using an ACL. Address ranges are: VLAN 11 10.67.11.0/24 VLAN 99 10.67.99.0/24
ip address 10.67.11.247 255.255.255.0
ip access-group BAN_VLAN99 in
ip address 10.67.99.247 255.255.255.0
ip access-list extended BAN_VLAN99
deny ip 10.67.99.0 0.0.0.255 any
permit ip any any
But if I put a VLAN 99 address on a workstation, and plug into a VLAN 99 port, I'm still able to ping addresses on VLAN 11 (10.67.11.1 for example)
This seems embarrassingly simple... what am I missing??