Cisco Catalyst 4500 Series - Acls and Routed Packets

62-30
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 62 Configuring Network Security with ACLs
Using VLAN Maps with Router ACLs
Figure 62-5 Applying ACLs on Switched Packets
ACLs and Routed Packets
Figure 62-6 shows how ACLs are applied on routed packets. For routed packets, the ACLs are applied
in this order:
1. VLAN map for input VLAN
2. Input router ACL
3. Output router ACL
4. VLAN map for output VLAN
VLAN 10
map
Frame
Input
router
ACL
Output
router
ACL
Routing function
Catalyst 4500 series switch
VLAN 10 VLAN 20
Host C
(VLAN 10)
Host A
(VLAN 10)
VLAN 20
map
Packet
94156