
Configuring IP Services
8-8
Adding a Traffic Filter to a NetBIOS Interface
If name caching is enabled, a router that receives a Name Query Response
(originating from a server and addressed to a client) must be able to deliver the
message to the NetBIOS entity on the router (rather than simply forward it out
another interface toward its destination).
To enable the router to recognize a unicast IP packet that contains a Name Query
Response and pass it to NetBIOS through UDP port 137, you must configure a
traffic filter on each NetBIOS interface that receives unicast Name Query
Responses.
1. Beginning at the Configuration Manager window, select Circuits➔Edit.
The Circuit List window opens.
2. Click on Edit.
The Circuit Definition window opens.
3. Select Protocols➔Edit IP➔Traffic Filters.
The IP Filters window opens.
4. Click on Template.
The Filter Template Management window opens.
5. Click on Create.
The Create IP Template window opens.
6. Select Criteria➔Add➔UDP Frame➔Destination Port.
The Edit Range screen opens.
7. Enter 137 for the minimum value and the maximum value.
8. Click on OK.
The Create IP Template window opens.
9. Select Action➔Add➔Forward to Next Hop.
The Next Hop window opens.
10. Enter the IP address of this interface (the interface on which you are
configuring the traffic filter). Click on OK.
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