Command Line Reference Guide

Access Control Lists (ACL) | 227
Usage
Information
The order option is relevant in the context of the Policy QoS feature only. See the “Quality of
Service” chapter of the FTOS Configuration Guide for more information.
When you use the log option, CP processor logs details about 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.
The C-Series and S-Series cannot count both packets and bytes, so when you enter the count byte
options, only bytes are incremented.
The monitor option is relevant in the context of flow-based monitoring only. See the Chapter 45, Port
Monitoring.
Related
Commands
permit arp
e
Configure a filter that forwards ARP packets meeting this criteria.This command is supported only on
12-port GE line cards with SFP optics; refer to your line card documentation for specifications.
Syntax
permit arp {destination-mac-address mac-address-mask | any} vlan vlan-id {ip-address |
any | opcode code-number} [count [byte] | log] [order] [monitor] [fragments]
To remove this filter, use one of the following:
• Use the no seq sequence-number command syntax if you know the filter’s sequence number or
• Use the no permit arp {destination-mac-address mac-address-mask | any} vlan vlan-id
{ip-address | any | opcode code-number} command.
Parameters
Version 8.1.1.0 Introduced on E-Series ExaScale
Version 7.6.1.0 Support added for S-Series
Version 7.5.1.0 Support added for C-Series
Version 7.4.1.0
Added support for non-contiguous mask and added the
monitor option.
Version 6.5.10
Expanded to include the optional QoS
order priority for the ACL entry.
Note: When ACL logging and byte counters are configured simultaneously, byte counters
may display an incorrect value. Configure packet counters with logging instead.
ip access-list extended Create an extended ACL.
permit tcp Assign a permit filter for TCP packets.
permit udp Assign a permit filter for UDP packets.
destination-mac-address
mac-address-mask
Enter a MAC address and mask in the nn:nn:nn:nn:nn format.
For the MAC address mask, specify which bits in the MAC address must
match.
The MAC ACL supports an inverse mask, therefore, a mask of ff:ff:ff:ff:ff:ff
allows entries that do not match and a mask of 00:00:00:00:00:00 only
allows entries that match exactly.
any Enter the keyword any to match and drop any ARP traffic on the interface.