Examples Of Router Acls And Vlan Maps Applied To Vlans; Acls And Switched Packets; Acls And Bridged Packets - Cisco 3750G - Catalyst Integrated Wireless LAN Controller Configuration Manual

Using VLAN Maps with Router ACLs

Examples of Router ACLs and VLAN Maps Applied to VLANs

This section gives examples of applying router ACLs and VLAN maps to a VLAN for switched, bridged,
routed, and multicast packets. Although the following illustrations show packets being forwarded to their
destination, each time the packet's path crosses a line indicating a VLAN map or an ACL, it is also
possible that the packet might be dropped, rather than forwarded.

ACLs and Switched Packets

Figure 32-6
within the VLAN without being routed or forwarded by fallback bridging are only subject to the VLAN
map of the input VLAN.
Figure 32-6
Host A
(VLAN 10)

ACLs and Bridged Packets

Figure 32-7
Layer 2 ACLs are applied to the input VLAN. Only non-IP, non-ARP packets can be fallback-bridged.
Catalyst 3750 Switch Software Configuration Guide
32-38
shows how an ACL is applied on packets that are switched within a VLAN. Packets switched
Applying ACLs on Switched Packets
VLAN 10
map
Frame
Host C
(VLAN 10)
VLAN 10
shows how an ACL is applied on fallback-bridged packets. For bridged packets, only
Chapter 32
Input Output
router router VLAN 20
ACL ACL
Routing function or
fallback bridge
Packet
Configuring Network Security with ACLs
map
VLAN 20
OL-8550-02