Deployment Guide

Version Description
8.2.1.0 Allows ACL control of fragmented packets for IP (Layer 3) ACLs.
8.1.1.0 Introduced on the E-Series ExaScale.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
7.4.1.0 Added support for the non-contiguous mask and added the monitor option.
6.5.10 Expanded to include the optional QoS order priority for the ACL entry.
Usage
Information
Use the order option only when you use policy-based QoS on the switch. For more information, refer to
the Quality of Service chapter of the C9000 Series Configuration Guide. The following conditions apply:
● The seq sequence-number command is applicable only in an ACL group.
● The order option works across ACL groups that have been applied on an interface via the QoS policy
framework.
● The order option takes precedence over seq sequence-number.
● If sequence-number is not configured, the rules with the same order value are ordered according to
their configuration order.
● If sequence-number is configured, the sequence-number is used as a tie breaker for rules with the
same order.
When you use the log option, the CP processor logs detail the packets that match. Depending on how
many packets match the log entry and at what rate, the CP may become busy as it has to log these
packets’ details.
By default, 10 ACL logs are generated if you do not specify the threshold explicitly. The default frequency
at which ACL logs are generated is five minutes. By default, flow-based monitoring is not enabled.
Use the monitor option only when you are using flow-based monitoring. For more information, refer to
the Port Monitoring chapter of the C9000 Series Configuration Guide.
Related
Commands
deny — configures a filter to drop packets.
permit — configures a filter to forward packets.
show ip access-lists
Display inbound or outbound IP access-list information based on a given option.
C9000 Series
Syntax
show ip access-lists {interface interface [in | out]}
Parameters
interface Enter the keyword interface then one of the following keywords and slot/port
or pe-id / stack-unit / port-id information:
● For a 1-Gigabit Ethernet interface, enter the keyword GigabitEthernet then
the slot/port information.
● For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet then the slot/port information.
● For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port information.
● For a VLAN interface, enter the keyword vlan then the slot/port number.
● For a Port Channel interface, enter the keyword port-channel then a port
channel number.
● For a port extender Gigabit Ethernet interface, enter the keyword peGigE then
the pe-id / stack-unit / port-id information. The pe-id range is from 0 to 255;
Access Control Lists (ACL) 231