Port Filters

Flow Mapping® provides the ability to apply filters to egress ports, passing or dropping traffic after it has been forwarded from a network port.

Port-filters provide a convenient way to narrow down the traffic seen by egress ports without having to change an entire map. However, they are less efficient and scalable than flow maps – focus on using flow maps as your first packet distribution technique.

Port Filter—Rules and Notes

Keep in mind the following notes when managing port-filters:

The filter is only supported for egress ports – network ports use maps to direct traffic.
You can only configure egress port filters on a single port at a time. The filter argument is blocked when used the with multiple tool ports or port groups.

Port-Filter Maximums

Table 1: Port-Filter Maximums per GigaVUE Node provides the maximum port-filters for the different GigaVUE nodes:

Table 1: Port-Filter Maximums per GigaVUE Node

GigaVUE Node

Maximum Number of Port-Filters

GigaVUE‑HC1

100 per module

GigaVUE-HC2 (CCv1 and CCv2)

100 per module

GigaVUE-HC3 (CCv1 and CCv2)

100 per module

GigaVUE-TA10

20 per chassis
100 with Advanced Features License

GigaVUE-TA40

20 per chassis
100 with Advanced Features License

GigaVUE-TA100

20 per pseudo-slot
100 per pseudo-slot with Advanced Features License

GigaVUE-TA100-CXP

20 per chassis
100 with Advanced Features License

GigaVUE-TA200

20 per pseudo-slot
100 per pseudo-slot with Advanced Features License

Note:  A single filter applied to multiple tool ports counts multiple times against the 100-filter limit.

How to Apply Port Filters

To apply a port filter, do the following:

1.   From the device view, go to Ports > Ports > All Ports.
2. Select the egress port to which you want to apply a filter, and then click Edit.
3. Under the Filters section on the Ports page, click Add Rule.
4. Select and configure the required rule. Add a new port-filter using the specified criteria as follows:
Use a drop rule to deny packets matching the specified criteria.
Use a pass rule to allow packets matching the specified criteria. All other packets are denied.
5. Click Save.

View Filter Resources for a Slot

You can view the maximum filter resources available and the filter resources used for a slot in the Slot ID quick view. To access the Slot ID quick view:

1.   From the device view, go to Chassis. The Box ID page appears.
2. Click the required slot ID. The Slot ID quick view appears.
3. Go to the Filter Resource section to view the filter resources limit and the filter resources used. Refer to the following figure: