CLI Guide

Version Description
9.4(0.0) Added the support for ow-based monitoring on the MXL 10/40GbE Switch IO Module.
9.3(0.0) Added the support for logging of ACLs on the MXL 10/40GbE Switch IO Module.
8.3.16.1 Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
The order option is relevant in the context of the Policy QoS feature only. For more information, refer to the
Quality of Service chapter of the Dell Networking OS Conguration Guide.
You can congure either count (packets) or count (bytes). However, for an ACL with multiple rules, you can
congure some ACLs with count (packets) and others as count (bytes) at any given time.
When the congured maximum threshold is exceeded, generation of logs is stopped. When the interval at which
ACL logs are congured 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 congured
threshold is exceeded, it is re-enabled for this new interval.
If ACL logging is stopped because the congured threshold is exceeded, it is re-enabled after the logging interval
period elapses. ACL logging is supported for standard and extended IPv4 ACLs, IPv6 ACLs, and s MAC ACLs. You
can congure 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 ow-based monitoring for a monitoring session by entering the flow-based enable
command in the Monitor Session mode. When you enable this capability, trac with particular ows 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 the specied trac
instead of all trac on the interface. This feature is particularly useful when looking for malicious trac. It is
available for Layer 2 and Layer 3 ingress and egress trac. You may specify trac 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
ip access-list standard— congures a standard ACL.
permit — congures a MAC address lter to pass packets.
seq — congures a MAC address lter with a specied sequence number.
permit (for Standard IP ACLs)
To permit packets from a specic source IP address to leave the switch, congure a lter.
Syntax
permit {source [mask]| any | host ip-address} [no-drop] [count [byte]] [dscp
value] [order] [fragments] [log [interval minutes] [threshold-in-msgs [count]]
[monitor]
To remove this lter, you have two choices:
• Use the no seq sequence-number command if you know the lter’s sequence number.
•
Use the no permit {source [mask] | any | host ip-address} command.
Parameters
source Enter the IP address in dotted decimal format of the network from which the packet was
sent.
Access Control Lists (ACL) 223