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CONFIG-STD-NACL mode
seq sequence-number {deny | permit} {source [mask] | any | host ip-address}
[count [byte]] [order] [fragments] [log [threshold-in-msgs count]] [monitor]
If the number of monitoring sessions increases, inter-process communication (IPC) bandwidth utilization
will be high. The ACL manager might require a large bandwidth when you assign an ACL, with many
entries, to an interface.
The ACL agent module saves monitoring details in its local database and also in the CAM region to
monitor packets that match the specified criterion. The ACL agent maintains data on the source port, the
destination port, and the endpoint to which the packet must be forwarded when a match occurs with the
ACL entry.
If you configure the flow-based enable command and do not apply an ACL on the source port or the
monitored port, both flow-based monitoring and port mirroring do not function. Flow-based monitoring
is supported only for ingress traffic and not for egress packets.
The port mirroring application maintains a database that contains all monitoring sessions (including port
monitor sessions). It has information regarding the sessions that are enabled for flow-based monitoring
and those sessions that are not enabled for flow-based monitoring. It downloads monitoring
configuration to the ACL agent whenever the ACL agent is registered with the port mirroring application
or when flow-based monitoring is enabled.
The show monitor session session-id command has been enhanced to display the Type field in
the output, which indicates whether a particular session is enabled for flow-monitoring.
Example Output of the show Command
Dell(conf-mon-sess-0)#do show monitor session 0
SessID Source Destination Dir Mode Source IP Dest IP
------ ------ ----------- --- ---- --------- --------
0 Te 1/1/1 Te 1/2/1 rx Flow N/A N/
A
The show config command has been modified to display monitoring configuration in a particular
session.
Example Output of the show Command
(conf-mon-sess-11)#show config
!
monitor session 11
flow-based enable
source TenGigabitEthernet 1/1/1 destination TenGigabitEthernet 1/1/1
direction both
The show ip | mac | ipv6 accounting commands have been enhanced to display whether
monitoring is enabled for traffic that matches with the rules of the specific ACL.
Example Output of the show Command
Dell# show ip accounting access-list
!
Extended Ingress IP access list kar on TenGigabitEthernet 1/1/1
Access Control Lists (ACLs)
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