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monitoring only specified traffic instead all traffic on the interface. This feature is particularly useful when
looking for malicious traffic. It is available for Layer 2 and Layer 3 ingress and egress traffic. You may
specify traffic using standard or extended access-lists. This mechanism copies all incoming or outgoing
packets on one port and forwards (mirrors) them to another port. The source port is the monitored port
(MD) and the destination port is the monitoring port (MG).
deny ether-type (for Extended MAC ACLs)
Configure an egress filter that drops specified types of Ethernet packets on egress ACL supported line cards. (For more
information, refer to your line card documentation).
Syntax
deny ether-type protocol-type-number {destination-mac-address mac-address-
mask | any} vlan vlan-id {source-mac-address mac-address-mask | any}
[count [byte]] [order] [log [interval minutes] [threshold-in-msgs [count]]
[monitor]
To remove this filter, you have two choices:
● Use the no seq sequence-number command if you know the filter’s sequence number.
● Use the no deny ether-type protocol-type-number {destination-mac-address
mac-address-mask | any} vlan vlan-id {source-mac-address mac-address-mask
| any} command.
Parameters
protocol-type-
number
Enter a number from 600 to FFFF as the specific Ethernet type traffic to drop.
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 specific Ethernet traffic on the
interface.
vlan vlan-id Enter the keyword vlan and then enter the VLAN ID to filter traffic associated
with a specific VLAN. The range is 1 to 4094 and 1 to 2094 for ExaScale ( you can
use IDs 1 to 4094). To filter all VLAN traffic, specify VLAN 1.
source-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.
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.
order (OPTIONAL) Enter the keyword order to specify the QoS priority for the ACL
entry. The range is from 0 to 254 (where 0 is the highest priority and 254 is the
lowest; lower order numbers have a higher priority) If you did not use the keyword
order, the ACLs have the lowest order by default (255).
log (OPTIONAL) Enter the keyword log to enable the triggering of ACL log messages.
threshold-in
msgs count
(OPTIONAL) Enter the threshold-in-msgs keyword followed by a value to
indicate the maximum number of ACL logs that can be generated, exceeding
which the generation of ACL logs is terminated with the seq, permit, or deny
commands. The threshold range is from 1 to 100.
202 Access Control Lists (ACL)