We have 3550 L3 swicth and have configured three VLANs Viz : VLAN_A,VLAN_B,VLAN_C. With three different subnets as 10.1.1.0 /24, 10.2.1.0 /24 and 10.3.1.0 /24. Plus there is one routed interface connected to firewall inside switch ( subnet 192.168.1.10 /24) this is also a default route configured in L3 switch. What we need is that VLAN_B and VLAN_C shold not comminicate with each other. But should be able to communicate with default gateway. In short VLAN_B pc should not ping to VLAN_C and vice-a-versa.
Can it be implemented using VACL?
Private VLANs seems one option. But is there any option available? Can we just configure access-list like routers and apply it to vlan interface? So that it will act just like router interfaces so that any traffic originating from one VLAN and destined for another will hit this access-list and the corresponding action will be taken.
Please share any experience.
Any link on cisco.com?
Thanks in advance