Acls And Bridged Packets - Cisco WS-C3550-12G Software Configuration Manual
Multilayer switch
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Chapter 19
Configuring Network Security with ACLs
Using VLAN Maps with Router ACLs
ACLs and Bridged Packets
Figure 19-7
shows how an ACL is applied on fallback-bridged packets. For bridged packets, only
Layer 2 ACLs are applied to the input VLAN. Only non-IP, non-ARP packets can be fallback-bridged.
Figure 19-7 Applying ACLs on Bridged Packets
Catalyst 3550 switch
with enhanced
multilayer software image
VLAN 10
VLAN 20
map
map
Frame
Host A
Host B
(VLAN 10)
(VLAN 20)
Fallback bridge
VLAN 10
VLAN 20
Packet
Catalyst 3550 Multilayer Switch Software Configuration Guide
19-40
78-11194-03
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