Service Manual

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 Configuration Guide.
When you use the log option, the CP processor logs details about the packets that match. Depending on how
many packets match the log entry and at what rate, the CP may become busy as it has to log these packets’
details.
The monitor option is relevant in the context of flow-based monitoring only. For more information, refer to Port
Monitoring.
You cannot include IP, TCP, or UDP filters in an ACL configured with ARP filters.
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).
NOTE
: When ACL logging and byte counters are configured simultaneously, byte counters may display
an incorrect value. Configure packet counters with logging instead.
permit ether-type (for Extended MAC ACLs)
Configure a filter that allows traffic with specified types of Ethernet packets. This command is supported only on 12-port GE line cards
with SFP optics. For specifications, refer to your line card documentation.
Syntax
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 [intervalminutes][threshold-in-msgs] [count]][monitor]
To remove this filter, you have two choices:
• Use the no seq sequence-number command if you know the filter’s sequence number.
•
Use the no permit ether-type protocol-type-number {destination-mac-address mac-
address-mask | any} vlan vlan-id {source-mac-address mac-address-mask | any}
command.
Parameters
protocol-type-
number
Enter a number from 600 to FFF as the specific Ethernet type traffic to drop.
Access Control Lists (ACL) 219