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Cisco Systems BC-109 manual Enable Bridging between Transparent Bridging and SRB

Models: BC-109

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Enable Bridging between Transparent Bridging and SRB

Enable Bridging between Transparent Bridging and SRB

We currently know that problems occur with the following protocols when bridged between Token Ring and other media: Novell IPX, DECnet Phase IV, AppleTalk, VINES, XNS, and IP. Further, problems can occur with the Novell IPX and XNS protocols when bridged between FDDI and other media. We recommend that these protocols be routed whenever possible.

To enable SR/TLB, you must perform the task in the following section:

•Enable Bridging between Transparent Bridging and SRB

In addition, you can also perform the tasks in the following sections:

•

•

•

Disable Fast-Switched SR/TLB

Enable Translation Compatibility with IBM 8209 Bridges

Enable Token Ring LLC2-to-Ethernet Conversion

Enable Bridging between Transparent Bridging and SRB

Before enabling bridging, you must have completely configured your router using multiport SRB and transparent bridging. Once you have done this, establish bridging between transparent bridging and source-route bridging by using the following command in global configuration mode:

Command	Purpose
source-bridge transparent ring-grouppseudo-ring	Enable bridging between transparent
bridge-number tb-group [oui]	bridging and SRB.

Disable Fast-Switched SR/TLB

To disable fast-switched SR/TLB and cause the router to handle packets by process switching, use the following command in global configuration mode:

Command	Purpose
no source-bridge transparent ring-groupfastswitch	Disable fast-switched SR/TLB.

Enable Translation Compatibility with IBM 8209 Bridges

To transfer data between IBM 8209 Ethernet/Token Ring bridges and routers running the SR/TLB software (to create a Token Ring backbone to connect Ethernets), use the following command on each Token Ring interface in interface configuration mode:

Command	Purpose
ethernet-transit-oui [90-compatible standard cisco]	Move data between IBM 8209
	Ethernet/Token Ring bridges and
	routers running translational bridging
	software.

Configuring Source-Route Bridging BC-121

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Cisco Systems BC-109 manual Enable Bridging between Transparent Bridging and SRB, Disable Fast-Switched SR/TLB

Contents

Configuring Source-Route Bridging SRB Configuration Task ListConfigure a Dual-Port Bridge Configure Source-Route BridgingConfigure 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 Enable SRB and Assign a Ring Group to an Interface Configure SRB over FDDIConfigure SRB over Frame Relay Configure Fast-Switching SRB over FDDIEnable the Forwarding and Blocking of Spanning-Tree Explorers BC-114 Bridging and IBM Networking Configuration Guidesource-bridge spanning Enable the Automatic Spanning-Tree Functionno source-bridge spanning bridge bridge-group protocol ibm Limit the Maximum SRB Hopssource-bridge spanning bridge-group source-bridge spanning bridge-group path-cost path-costEnable Use of the RIF Configure Bridging of Routed ProtocolsConfigure the RIF Timeout Interval Configure a Static RIF EntryOverview 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 Specify Timeout and Enable NetBIOS Name Caching Enable the Proxy Explorers Feature on the Appropriate InterfaceEnable NetBIOS Proxying Configure the NetBIOS Cache Name LengthCreate Static Entries in the NetBIOS Name Cache Specify Dead-Time Intervals for NetBIOS PacketsConfigure LNM Support Configure LNM SupportConfiguring Source-Route Bridging BC-127 BC-128 Bridging and IBM Networking Configuration Guide How a Router Works with LNMDisable LNM Functionality Enable Other LRMs to Change Router Parameters Disable Automatic Report Path Trace FunctionPrevent LNM Stations from Modifying Cisco IOS Software Parameters lnm pathtrace-disabled all originEnable LNM Servers Apply a Password to an LNM Reporting LinkChange Reporting Thresholds 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 host name permit deny pattern Configure NetBIOS Access Filters Using a Byte Offsetnetbios access-list bytes name permit deny offset netbios input-access-filter bytes nameFilter Frames by Protocol Type Configure Administrative Filters for Token Ring TrafficFilter Source Addresses Filter Frames by Vendor CodeFilter Destination Addresses source-bridge input-lsap-list access-list-numberConfigure Access Expressions that Combine Administrative Filters Optimize Access Expressions Configure Access ExpressionsTune the SRB Network Alter Access Lists Used in Access ExpressionsEnable or Disable the Source-Route Autonomous-Switching Cache Enable or Disable the Source-Route Fast-Switching CacheEnable fast-switching Disable fast-switchingEstablish the Connection Timeout Interval Enable or Disable the SSEOptimize Explorer Processing Enable the SSE functionsource-bridge explorerq-depth depth Establish SRB Interoperability with TI MAC Firmware Configure Proxy ExplorersMonitor and Maintain the SRB Network Report Spurious Frame-Copied ErrorsSRB Configuration Examples Basic SRB with Spanning-Tree Explorers Example Optimized Explorer Processing Configuration Example SRB with Automatic Spanning-Tree Function Configuration ExampleSRB-Only Example SRB with Automatic Spanning-Tree Function Configuration ExampleMultiport SRB Example SRB and Routing Certain Protocols ExampleS1103a SRB with Multiple Virtual Ring Groups Example Configuration for Router AConfiguring Source-Route Bridging BC-149 SRB with Multiple Virtual Ring Groups ExampleSRB over FDDI Fast-Switching Example SRB over FDDI Configuration ExamplesConfiguration for Router B Router ASRB over Frame Relay Configuration Example Configuration on Router B Configuration of Router AConfiguration on Router C 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 BC-156 Bridging and IBM Networking Configuration Guide NetBIOS Support with a Static NetBIOS Cache Entry ExampleLNM for a Simple Network Example SRB Configuration Examples LNM for a More Complex Network ExampleBC-158 Bridging and IBM Networking Configuration Guide Physical configurationNetBIOS Access Filters Example BC-160 Bridging and IBM Networking Configuration Guide Filtering Bridged Token Ring Packets to IBM Machines ExampleFigure 68 shows a router connecting four Token Rings Administrative Access Filters-Filtering SNAP Frames on Output ExampleAdministrative Access Filters-Filtering SNAP Frames on Output Example Configuring Source-Route Bridging BC-161Creating Access Filters Example Fast-Switching Example Access Filters ExampleAccess Filters Example Figure 69 Network Configuration Using NetBIOS Access FiltersSRB Configuration Examples Autonomous Switching ExampleBC-164 Bridging and IBM Networking Configuration Guide