Reference Guide

Access Control Lists (ACL) | 221
deny arp
e
Configure an egress filter that drops ARP packets on egress ACL supported line cards (see your line
card documentation).
Syntax
deny arp {destination-mac-address mac-address-mask | any} vlan vlan-id {ip-address | any |
opcode code-number} [count [byte] | log] [order] [monitor]
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 deny arp {destination-mac-address mac-address-mask | any} vlan vlan-id
{ip-address | any | opcode code-number} command.
Parameters
Defaults
Not configured.
Command Modes
CONFIGURATION-EXTENDED-ACCESS-LIST
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.
vlan vlan-id Enter the keyword vlan followed by the VLAN ID to filter traffic
associated with a specific VLAN.
Range: 1 to 4094, 1-2094 for ExaScale (can used IDs 1-4094)
To filter all VLAN traffic specify VLAN 1.
ip-address
Enter an IP address in dotted decimal format (A.B.C.D) as the target IP
address of the ARP.
opcode code-number Enter the keyword opcode followed by the number of the ARP opcode.
Range: 1 to 23.
count (OPTIONAL) Enter the keyword count to count packets processed by
the filter.
byte (OPTIONAL) Enter the keyword byte to count bytes processed by the
filter.
log (OPTIONAL, E-Series only) Enter the keyword log to have the
information kept in an ACL log file.
order (OPTIONAL) Enter the keyword order to specify the QoS priority for
the ACL entry.
Range: 0-254 (where 0 is the highest priority and 254 is the lowest;
lower order numbers have a higher priority)
Default: If the order keyword is not used, the ACLs have the lowest
order by default (255).
monitor (OPTIONAL) Enter the keyword monitor when the rule is describing
the traffic that you want to monitor and the ACL in which you are creating
the rule will be applied to the monitored interface. For details, see the
section “Flow-based Monitoring” in the Port Monitoring chapter of the
FTOS Configuration Guide.