October 2002
Intermediate to advanced
560 pages
12h 13m
English
Content preview from Cisco® Field Manual: Catalyst® Switch ConfigurationBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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11-4. VLAN Access Control Lists
Access control lists (ACLs) define how traffic is to be handled as it passes through a network device.
ACLs use addressing and port information to control conversations.
ACLs are typically implemented in routers, but new hardware allow Layer 2 and Layer 3 switches to consult the list before passing the packet.
ACLs enable users to configure any switch to control traffic based on Layer 3 and above of the OSI reference model.
These ACLs are mapped to a VLAN or a Layer 2 port to control traffic flows.
VACLs are controlled in hardware and are not supported on all platforms.
Currently VACLs are supported on the 6000 (with a Policy Feature Card [PFC] or PFC2), the 3550, and the 2950 series switches.
The VLAN ACL (VACL) is ...
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