Service Manual

Version Description
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
When the configured maximum threshold is exceeded, generation of logs are stopped.
When the interval at which ACL logs are configured to be recorded expires, the subsequent, fresh interval timer is
started and the packet count for that new interval commences from zero. If ACL logging was stopped previously
because the configured threshold is exceeded, it is re-enabled for this new interval.
If ACL logging is stopped because the configured threshold is exceeded, it is re-enabled after the logging interval
period elapses. ACL logging is supported for standard and extended IPv4 ACLs, Pv6 ACLs, and MAC ACLs. You
can configure ACL logging only on ACLs that are applied to ingress interfaces; you cannot enable logging for ACLs
that are associated with egress interfaces.
You can activate flow-based monitoring for a monitoring session by entering the flow-based enable
command in the Monitor Session mode. When you enable this capability, traffic with particular flows that are
traversing through the ingress and egress interfaces are examined and, appropriate ACLs can be applied in both
the ingress and egress direction. Flow-based monitoring conserves bandwidth by 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).
Related Commands
deny — configures a MAC ACL filter to drop packets.
seq —configure a MAC ACL filter with a specified sequence number.
seq
To a deny or permit filter in a MAC access list while creating the filter, assign a sequence number.
Syntax
seq sequence-number {deny | permit} {any | mac-source-address [mac-source-
address-mask]} [count [byte]] [log [interval minutes] [threshold-in-msgs
[count]] [monitor]
To remove this filter, use the no seq sequence-number command.
Parameters
sequence-number Enter a number from 0 to 65535.
deny Enter the keyword deny to configure a filter to drop packets meeting this condition.
permit Enter the keyword permit to configure a filter to forward packets meeting this criteria.
any Enter the keyword any to filter all packets.
mac-source-
address
Enter a MAC address in nn:nn:nn:nn:nn:nn format.
mac-source-
address-mask
(OPTIONAL) Specify which bits in the MAC address must match. If no mask is specified,
a mask of 00:00:00:00:00:00 is applied (in other words, the filter allows only MAC
addresses that match).
count (OPTIONAL) Enter the keyword count to count packets the filter processes.
byte (OPTIONAL) Enter the keyword byte to count bytes the filter processes.
228 Access Control Lists (ACL)