
Using NetBIOS Services
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You can adjust the processing time for the name/RIF cache using the Name Cache
Age parameter, which is a source routing bridge global parameter. Any
adjustments you make affect all instances of the source routing bridge in the
router configuration.
You can adjust the timeout parameter for the query cache by means of the
NetBIOS Query Cache Age parameter, which is also a global parameter of the
source routing bridge.
See “NetBIOS Global P
arameter Descriptions”on page 3-14 for information
about the Cache Age Time and NetBIOS Query Cache Age parameters.
Statically Configured NetBIOS Names
You can add static NetBIOS names and associated RIF entries into the router.
These entries are independent of the name and RIF entries learned dynamically in
the name cache.
The static RIF must reflect a valid learned route. Since specifying a valid RIF is a
complicated procedure, we recommend that you copy a RIF that the router learned
dynamically into the name cache.
Implementation Notes
The following sections contain information you may need to know before you
configure NetBIOS on the router.
Topologies
If you configure your source routed network to operate as a spanning tree, this
may affect the client name-caching feature. The following sections describe the
effects on client name caching when you have a spanning tree or other topology.
Spanning Tree Topology
If you configure the source route network as a spanning tree, you should disable
client name caching, because clients typically send name query frames as
spanning tree explorers (STEs). Unless you disable client name caching, the client
learns only about the spanning tree path to the server. This creates excess traffic on
the spanning tree links and reduces the overall performance of the network.
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