Cisco Systems BC-109 manual Specify Timeout and Enable NetBIOS Name Caching

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Configure NetBIOS Support

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Create Static Entries in the NetBIOS Name Cache

Specify Dead-Time Intervals for NetBIOS Packets

Enable the Proxy Explorers Feature on the Appropriate Interface

In order to enable NetBIOS name caching on an interface, the proxy explorers feature must first be enabled on that interface. This feature must either be enabled for response to all explorer packets or for response to NetBIOS packets only.

To determine whether the proxy explorers feature has been enabled, use the following command in EXEC mode:

Command	Purpose
show startup-config	Determine whether or not the proxy
	explorers feature has been enabled.

To determine whether proxy explorers has been configured for response to all explorer packets, look in the configuration file for the source-bridgeproxy-explorerentry for the appropriate interface. For example, if the appropriate interface is Token Ring 0, look for an entry similar to the following:

interface tokenring 0 source-bridge proxy-explorer

If that entry does not exist, look for the source-bridgeproxy-netbios-onlyentry for the appropriate interface.

If neither entry exists, proxy explorers has not yet been enabled for the appropriate interface. To enable proxy explorers for response to all explorer packets, refer to the section “Configure Proxy Explorers” later in this chapter.

Otherwise, enable proxy explorers only for the NetBIOS name caching function by using the following command in global configuration mode:

Command	Purpose
source-bridge proxy-netbios-only	Enable use of proxy explorers only
	for the NetBIOS name caching
	function and not for their general
	local response to explorers.

Specify Timeout and Enable NetBIOS Name Caching

After you have ensured that the proxy explorers feature has been enabled for the appropriate interface, you can specify a cache timeout and enable NetBIOS name caching. To do this, use the following commands:

Step	Command	Purpose
1	netbios name-cache timeout minutes	Specify the timeout for entries in the
		NetBIOS name cache.

2	netbios enable-name-cache	Enable NetBIOS name caching for
		the appropriate interfaces.

BC-124Bridging and IBM Networking Configuration Guide

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Contents Configuring Source-Route Bridging SRB Configuration Task ListConfigure Source-Route Bridging Configure a Dual-Port BridgeConfigure a Multiport Bridge Using a Virtual Ring Multiple Dual-Port BridgesSource-bridge ring-group ring-group Define a Ring Group in SRB ContextNo source-bridge ring-group ring-group Configure SRB over Fddi Enable SRB and Assign a Ring Group to an InterfaceInterface fddi slot/port Source-bridge route-cache cbusConfigure Fast-Switching SRB over Fddi Configure SRB over Frame RelayEnable the Automatic Spanning-Tree Function Limit the Maximum SRB Hops Configure Bridging of Routed Protocols Enable Use of the RIFConfigure a Static RIF Entry Configure the RIF Timeout IntervalOverview of SR/TLB Following notes and caveats apply to all uses of SR/TLB Enable Bridging between Transparent Bridging and SRB Disable Fast-Switched SR/TLBEnable Translation Compatibility with IBM 8209 Bridges No source-bridge transparent ring-group fastswitchEnable Token Ring LLC2-to-Ethernet Conversion Enable 0x80d5 ProcessingEnable Standard Token Ring LLC2-to-Ethernet LLC2 Conversion Source-bridge sap-80d5 dsapConfigure NetBIOS Support Specify Timeout and Enable NetBIOS Name Caching Source-bridge proxy-netbios-onlyConfigure the NetBIOS Cache Name Length Enable NetBIOS ProxyingCreate Static Entries in the NetBIOS Name Cache Specify Dead-Time Intervals for NetBIOS PacketsNetbios name-cache query-timeout seconds Configure LNM SupportNetbios name-cache recognized-timeout seconds LNM Linking to a Source-Route Bridge on Each Local Ring How a Router Works with LNM LAN Network Manager Monitoring and TranslatingDisable LNM Functionality Disable Automatic Report Path Trace Function Enable Other LRMs to Change Router ParametersEnable LNM Servers Apply a Password to an LNM Reporting LinkChange Reporting Thresholds Monitor LNM Operation Change an LNM Reporting IntervalLnm softerr milliseconds Configure NetBIOS Access Filters Using Station Names Configure NetBIOS Access FiltersSecure the SRB Network Configure NetBIOS Access Filters Using a Byte Offset Netbios access-list host name permit deny patternNetbios access-list bytes name permit deny offset Netbios input-access-filter bytes nameNetbios output-access-filter bytes name Configure Administrative Filters for Token Ring TrafficFilter Frames by Protocol Type Filter Source Addresses Filter Frames by Vendor CodeFilter Destination Addresses Access Expression Example Configure Access Expressions Optimize Access ExpressionsAlter Access Lists Used in Access Expressions Tune the SRB NetworkEnable or Disable the Source-Route Fast-Switching Cache Establish the Connection Timeout Interval Enable or Disable the SSEOptimize Explorer Processing Controlling Explorer Storms in Redundant Network Topologies Establish SRB Interoperability with TI MAC Firmware Configure Proxy ExplorersMac-address ieee-address Report Spurious Frame-Copied Errors Monitor and Maintain the SRB NetworkSRB Configuration Examples Source-bridge tcp-queue-max numberDual-Port Source-Route Bridge Configuration Basic SRB with Spanning-Tree Explorers ExampleOptimized Explorer Processing Configuration Example SRB-Only ExampleSRB and Routing Certain Protocols Example Multiport SRB ExampleConfiguration for Router a SRB with Multiple Virtual Ring Groups ExampleSRB over Fddi Configuration Examples SRB over Fddi Fast-Switching ExampleConfiguration for Router B Router aSRB over Frame Relay Configuration Example Frad Using SRB over Frame Relay to Connect to a Cisco RouterConfiguration of Router a Configuration on Router BConfiguration on Router C Adding a Static RIF Cache Entry ExampleAdding a Static RIF Cache Entry for a Two-Hop Path Example SR/TLB for a Simple Network ExampleBC-154Bridging and IBM Networking Configuration Guide SR/TLB with Access Filtering Example Example of a Bit-Swapped AddressNetBIOS Support with a Static NetBIOS Cache Entry Example Specifying a Static EntryWayfarer# show lnm config LNM for a Simple Network ExampleLNM for a More Complex Network Example NetBIOS Access Filters Example Filtering Bridged Token Ring Packets to IBM Machines Example Shows a router connecting four Token Rings Creating Access Filters Example Following access expression would resultAccess Filters Example Fast-Switching ExampleAutonomous Switching Example