Service Manual

Command Modes CONFIGURATION-EXTENDED-ACCESS-LIST
Command History
Version Description
9.7(0.0) Introduced on the S6000–ON.
9.4(0.0) Added support for ow-based monitoring on the S4810, S4820T, S6000, Z9000,
and MXL 10/40GbE Switch IO Module platforms.
9.3.0.0 Added support for logging of ACLs on the S4810, S4820T, Z9000, and MXL
10/40GbE Switch IO Module platforms.
Usage Information
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 reenabled for this new interval.
If ACL logging is stopped because the congured threshold is exceeded, it is reenabled after the logging
interval period elapses. ACL logging is supported for standard and extended IPv4 ACLs, standard and
extended IPv6 ACLs, and standard and extended 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 ow-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
specied trac instead 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).
seq ether-type (for Extended MAC ACLs)
Congure an egress lter with a specic sequence number that lters trac with specied types of Ethernet packets. This
command is supported only on 12-port GE line cards with SFP optics. For specications, refer to your line card documentation.
NOTE: Only the options that have been newly introduced in Release 9.3(0.0) and Release 9.4(0.0) are described here.
For a complete description on all of the keywords and variables that are available with this command, refer the topic of
this command discussed earlier in this guide.
Syntax
seq sequence-number {deny | permit} 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 lter, use the no seq sequence-number command.
Parameters
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
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Access Control Lists (ACL)