Understanding Cisco Ios Acl Support; Cisco Ios Acl Configuration Guidelines And Restrictions - Cisco 7604 Configuration Manual

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Understanding Cisco IOS ACL Support

This chapter describes Cisco IOS ACL support on the Cisco 7600 series routers:

For complete information about configuring Cisco IOS ACLs, see the Cisco IOS Security Configuration

Guide, Release 12.2, "Traffic Filtering and Firewalls," at this URL:

http://www.cisco.com/en/US/docs/ios/sec_data_plane/configuration/guide/sec_accs_list_rmap_ps6017_TS

D_Products_Configuration_Guide_Chapter.html

For additional information (including configuration examples and troubleshooting information), see the

documents listed on this page:

http://www.cisco.com/en/US/products/hw/routers/ps368/tsd_products_support_series_home.html

The following guidelines and restrictions apply to Cisco IOS ACL configurations:

Cisco IOS ACL Configuration Guidelines and Restrictions, page 34-1

Hardware and Software ACL Support, page 34-2

Configuring IPv6 Address Compression, page 34-3

Optimized ACL Logging with a PFC3, page 34-5

Guidelines and Restrictions for Using Layer 4 Operators in ACLs, page 34-7

You can apply Cisco IOS ACLs directly to Layer 3 ports and to VLAN interfaces.

You can apply VLAN ACLs (VACLs) to VLANs (refer to

Each type of ACL (IP, IPX, and MAC) filters only traffic of the corresponding type. A Cisco IOS

MAC ACL never matches IP or IPX traffic.

The PFC does not provide hardware support for Cisco IOS IPX ACLs. Cisco IOS IPX ACLs are

supported in software on the MSFC.

By default, the MSFC sends Internet Control Message Protocol (ICMP) unreachable messages when

a packet is denied by an access group.

Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX

C H A P T E R

Chapter 35, "Configuring VLAN

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