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12-2
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 12 Configuring Traffic Filtering
IP Receive ACLs
The IP Receive ACLs feature is described in the following topics:
• Feature History for IP Receive ACLs, page 12-2
• Restrictions for IP Receive ACLs, page 12-2
• Configuration Tasks for IP Receive ACLs, page 12-2
• Configuration Example for IP Receive ACLs, page 12-3
Feature History for IP Receive ACLs
Restrictions for IP Receive ACLs
The IP receive ACLs feature has the following restrictions:
• A receive ACL must be a numbered ACL. You cannot use a named ACL as the receive ACL.
• The rules for numbered ACLs also apply to the access control entries (ACEs) of receive ACLs.
• Time-based and reflexive ACLs are not supported as receive ACLs.
• Only traffic processed by the RP is filtered. Traffic that is processed exclusively by the Forwarding
Processor (FP) is not filtered. For example, GRE tunneled packets, L2TP tunneled packets, and
some ICMP packets are not filtered.
Configuration Tasks for IP Receive ACLs
To configure the IP Receive ACLs feature, perform the following configuration tasks:
• Configuring Receive ACLs, page 12-3
• Verifying Receive ACLs, page 12-3
Cisco IOS Release Description Required PRE
12.3(7)XI1 This feature was introduced on the Cisco 10000 series
router.
PRE2