5: Monitoring and filtering
Traffic filters
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Traffic filters
To develop specific access policies and to make traffic monitoring more efficient and effective,
custom (layer 2 or IPv4) filters can be applied to the traffic before it is presented on the
monitor ports. This reduces overhead and enables access policies and monitoring to be
targeted at specific types of traffic only.
By default, commonly used filters are defined for both layer 2 and IPv4.
Viewing L2
filters
To view a list of active L2 traffic filters, open the
Traffic > L2 Filters
page. By default,
commonly used filters are defined.
The following information is presented for each filter:
•
Filter name:
Unique name assign to the filter.
•
MAC destination:
Indicates the destination MAC address assigned to the filter. The filter
will only process frames being sent to this address. The address is specified as six pairs
of hexadecimal digits separated by colons (xx:xx:xx:xx:xx:xx).
•
MAC source:
Indicates the source MAC address assigned to the filter. The filter will only
process frames received from this address. The address is specified as six pairs of
hexadecimal digits separated by colons (xx:xx:xx:xx:xx:xx).
•
Ethertype:
Identifies the Ethernet frame type that this filter will process. Other frame
types are ignored.
•
VLAN1:
Indicates the VLAN ID assigned to the filter. The filter will only process frames
tagged with this VLAN ID.
•
VLAN 2:
Indicates the second VLAN ID assigned to the filter. Used to process VLAN in
VLAN traffic.
