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Cisco Systems BC-109 manual Now you are ready to determine two things

Models: BC-109

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SRB Configuration Examples

Assume that the following configuration for SRB and transparent bridging existed before you wanted to enable SR/TLB:

interface tokenring 0 source-bridge 1 1 2

!

interface tokenring 1 source-bridge 2 1 1

!

interface ethernet 0 bridge-group 1

!

interface ethernet 0 bridge-group 1

!

bridge 1 protocol dec

To enable SR/TLB, one aspect of this configuration must change immediately—a third ring must be configured. Before SR/TLB, the two Token Ring interfaces were communicating with two-port local source-route bridging; after SR/TLB, these two interfaces must be reconfigured to communicate through a virtual ring, as follows:

source-bridge ring-group 10

!

interface tokenring 0 source-bridge 1 1 10

!

interface tokenring 1 source-bridge 2 1 10

!

interface ethernet 0 bridge-group 1

!

interface ethernet 1 bridge-group 1

!

bridge 1 protocol dec

Now you are ready to determine two things:

•A ring number for the pseudo-ring that is unique throughout the source-route bridged network. For the preceding example configuration, use the number 3.

•A bridge number for the path to the pseudo-ring. For the preceding example configuration, use the number 1.

BC-154Bridging and IBM Networking Configuration Guide

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Cisco Systems BC-109 manual Now you are ready to determine two things

Contents

SRB Configuration Task List Configuring Source-Route BridgingConfigure Source-Route Bridging Configure a Dual-Port BridgeConfigure a Multiport Bridge Using a Virtual Ring Configure a Multiport Bridge Using a Virtual RingFigure 46 Multiple Dual-Port Bridges Define a Ring Group in SRB Context Configure SRB over FDDI Enable SRB and Assign a Ring Group to an InterfaceEnable the Forwarding and Blocking of Spanning-Tree Explorers Configure Fast-Switching SRB over FDDIConfigure SRB over Frame Relay BC-114 Bridging and IBM Networking Configuration Guidesource-bridge spanning Enable the Automatic Spanning-Tree Functionno source-bridge spanning source-bridge spanning bridge-group Limit the Maximum SRB Hopsbridge bridge-group protocol ibm source-bridge spanning bridge-group path-cost path-costConfigure Bridging of Routed Protocols Enable Use of the RIFConfigure a Static RIF Entry Configure the RIF Timeout IntervalOverview of SR/TLB The following notes and caveats apply to all uses of SR/TLB Disable Fast-Switched SR/TLB Enable Bridging between Transparent Bridging and SRBEnable Translation Compatibility with IBM 8209 Bridges Enable 0x80d5 Processing Enable Token Ring LLC2-to-Ethernet ConversionEnable Standard Token Ring LLC2-to-Ethernet LLC2 Conversion Configure NetBIOS Support Enable the Proxy Explorers Feature on the Appropriate Interface Specify Timeout and Enable NetBIOS Name CachingCreate Static Entries in the NetBIOS Name Cache Configure the NetBIOS Cache Name LengthEnable NetBIOS Proxying Specify Dead-Time Intervals for NetBIOS PacketsConfigure LNM Support Configure LNM SupportConfiguring Source-Route Bridging BC-127 How a Router Works with LNM BC-128 Bridging and IBM Networking Configuration GuideDisable LNM Functionality Prevent LNM Stations from Modifying Cisco IOS Software Parameters Disable Automatic Report Path Trace FunctionEnable Other LRMs to Change Router Parameters lnm pathtrace-disabled all originChange Reporting Thresholds Apply a Password to an LNM Reporting LinkEnable LNM Servers lnm password number stringChange an LNM Reporting Interval Enable the RPS Express Buffer FunctionMonitor LNM Operation Configure NetBIOS Access Filters Using Station Names Configure NetBIOS Access FiltersSecure the SRB Network netbios access-list bytes name permit deny offset Configure NetBIOS Access Filters Using a Byte Offsetnetbios access-list host name permit deny pattern netbios input-access-filter bytes nameConfigure Administrative Filters for Token Ring Traffic Filter Frames by Protocol TypeFilter Destination Addresses Filter Frames by Vendor CodeFilter Source Addresses source-bridge input-lsap-list access-list-numberConfigure Access Expressions that Combine Administrative Filters Configure Access Expressions Optimize Access ExpressionsAlter Access Lists Used in Access Expressions Tune the SRB NetworkEnable fast-switching Enable or Disable the Source-Route Fast-Switching CacheEnable or Disable the Source-Route Autonomous-Switching Cache Disable fast-switchingOptimize Explorer Processing Enable or Disable the SSEEstablish the Connection Timeout Interval Enable the SSE functionsource-bridge explorerq-depth depth Configure Proxy Explorers Establish SRB Interoperability with TI MAC FirmwareReport Spurious Frame-Copied Errors Monitor and Maintain the SRB NetworkSRB Configuration Examples Basic SRB with Spanning-Tree Explorers Example SRB-Only Example SRB with Automatic Spanning-Tree Function Configuration ExampleOptimized Explorer Processing Configuration Example SRB with Automatic Spanning-Tree Function Configuration ExampleMultiport SRB Example SRB and Routing Certain Protocols ExampleS1103a Configuring Source-Route Bridging BC-149 Configuration for Router ASRB with Multiple Virtual Ring Groups Example SRB with Multiple Virtual Ring Groups ExampleConfiguration for Router B SRB over FDDI Configuration ExamplesSRB over FDDI Fast-Switching Example Router ASRB over Frame Relay Configuration Example Configuration on Router C Configuration of Router AConfiguration on Router B Adding a Static RIF Cache Entry ExampleSR/TLB for a Simple Network Example Adding a Static RIF Cache Entry for a Two-Hop Path ExampleBridge Now you are ready to determine two things SR/TLB with Access Filtering Example NetBIOS Support with a Static NetBIOS Cache Entry Example BC-156 Bridging and IBM Networking Configuration GuideLNM for a Simple Network Example BC-158 Bridging and IBM Networking Configuration Guide LNM for a More Complex Network ExampleSRB Configuration Examples Physical configurationNetBIOS Access Filters Example Filtering Bridged Token Ring Packets to IBM Machines Example BC-160 Bridging and IBM Networking Configuration GuideAdministrative Access Filters-Filtering SNAP Frames on Output Example Administrative Access Filters-Filtering SNAP Frames on Output ExampleFigure 68 shows a router connecting four Token Rings Configuring Source-Route Bridging BC-161Creating Access Filters Example Access Filters Example Access Filters ExampleFast-Switching Example Figure 69 Network Configuration Using NetBIOS Access FiltersSRB Configuration Examples Autonomous Switching ExampleBC-164 Bridging and IBM Networking Configuration Guide