Dell C9010 Modular Chassis Switch EMC Networking Command-Line Reference Guide - Page 958
deny icmp (for Extended IPv6 ACLs
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monitor (OPTIONAL) Enter the keyword monitor when the rule is describing the traffic that you want to monitor and the ACL in which you are creating the rule is applied to the monitored interface. Defaults By default, 10 ACL logs are generated if you do not specify the threshold explicitly. The default frequency at which ACL logs are generated is five minutes. By default, flow-based monitoring is not enabled. Command Modes ACCESS-LIST Command History Version 9.9(0.0) 9.5(0.1) 9.4(0.0) 9.3(0.0) Description Introduced on the C9010. Introduced on the Z9500. Added support for flow-based monitoring on the S4810, S4820T, S6000, and Z9000 platforms. Added support for logging of ACLs on the S4810, S4820T, and Z9000 platforms. Usage Information When the configured maximum threshold is exceeded, generation of logs is 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, IPv6 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). deny icmp (for Extended IPv6 ACLs) Configure a filter to drop all or specific ICMP messages. C9000 Series 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 deny icmp {source address mask | any | host ipv6-address} {destination address | any | host ipv6-address} [message-type] [count [byte]] | [log [interval minutes] [threshold-in-msgs [count]] [monitor] To remove this filter, you have two choices: ● Use the no seq sequence-number command syntax if you know the filter's sequence number ● Use the no deny icmp {source address mask | any | host ipv6-address} {destination address | any | host ipv6-address} command 958 IPv6 Access Control Lists (IPv6 ACLs)
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