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Cisco Systems BC-109 manual SRB with Automatic Spanning-Tree Function Configuration Example

Models: BC-109

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SRB with Automatic Spanning-Tree Function Configuration Example

SRB with Automatic Spanning-Tree Function Configuration Example

The following example of a Cisco series 7000 router configuration illustrates how to enable the automatic spanning tree function on an SRB network:

source-bridge ring-group 100

interface tokenring 0/0 no ip address ring-speed 16 multiring all source-bridge active 1 10 100 source-bridge spanning 1

!

interface tokenring 0/1 no ip address ring-speed 16 multiring all source-bridge active 2 10 100 source-bridge spanning 1

!

bridge 1 protocol ibm

Optimized Explorer Processing Configuration Example

The following configuration example improves the handling of explorer frames, enabling the Cisco IOS software to perform substantially better during explorer broadcast storms. In this configuration, the maximum byte rate of explorers is set to 100000.

source-bridge explorer-maxrate 100000 source-bridge explorerQ-depth 100

no source-bridge explorer-fastswitch

SRB-Only Example

The following example shows that all protocols are bridged, including IP. Because IP is being bridged, the system has only one IP address.

no ip routing

!

interface tokenring 0

ip address 131.108.129.2 255.255.255.0 source-bridge 129 1 130 source-bridge spanning

!

interface tokenring 1

ip address 131.108.129.2 255.255.255.0 source-bridge 130 1 129 source-bridge spanning

!

interface ethernet 0

ip address 131.108.129.2 255.255.255.0

Configuring Source-Route Bridging BC-147

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Cisco Systems BC-109 manual SRB with Automatic Spanning-Tree Function Configuration Example, SRB-Only Example

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 FDDIBC-114 Bridging and IBM Networking Configuration Guide Configure Fast-Switching SRB over FDDIConfigure SRB over Frame Relay Enable the Forwarding and Blocking of Spanning-Tree ExplorersEnable the Automatic Spanning-Tree Function source-bridge spanningno source-bridge spanning source-bridge spanning bridge-group path-cost path-cost Limit the Maximum SRB Hopsbridge bridge-group protocol ibm source-bridge spanning bridge-groupEnable 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 Enable Bridging between Transparent Bridging and SRB Disable Fast-Switched SR/TLBEnable Translation Compatibility with IBM 8209 Bridges Enable Token Ring LLC2-to-Ethernet Conversion Enable 0x80d5 ProcessingEnable 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 InterfaceSpecify Dead-Time Intervals for NetBIOS Packets Configure the NetBIOS Cache Name LengthEnable NetBIOS Proxying Create Static Entries in the NetBIOS Name CacheConfigure 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 lnm pathtrace-disabled all origin Disable Automatic Report Path Trace FunctionEnable Other LRMs to Change Router Parameters Prevent LNM Stations from Modifying Cisco IOS Software Parameterslnm password number string Apply a Password to an LNM Reporting LinkEnable LNM Servers Change Reporting ThresholdsEnable the RPS Express Buffer Function Change an LNM Reporting IntervalMonitor LNM Operation Configure NetBIOS Access Filters Configure NetBIOS Access Filters Using Station NamesSecure the SRB Network netbios input-access-filter bytes name Configure NetBIOS Access Filters Using a Byte Offsetnetbios access-list host name permit deny pattern netbios access-list bytes name permit deny offsetFilter Frames by Protocol Type Configure Administrative Filters for Token Ring Trafficsource-bridge input-lsap-list access-list-number Filter Frames by Vendor CodeFilter Source Addresses Filter Destination AddressesConfigure Access Expressions that Combine Administrative Filters Optimize Access Expressions Configure Access ExpressionsTune the SRB Network Alter Access Lists Used in Access ExpressionsDisable fast-switching Enable or Disable the Source-Route Fast-Switching CacheEnable or Disable the Source-Route Autonomous-Switching Cache Enable fast-switchingEnable the SSE function Enable or Disable the SSEEstablish the Connection Timeout Interval Optimize Explorer Processingsource-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 SRB with Automatic Spanning-Tree Function Configuration Example SRB with Automatic Spanning-Tree Function Configuration ExampleOptimized Explorer Processing Configuration Example SRB-Only ExampleSRB and Routing Certain Protocols Example Multiport SRB ExampleS1103a SRB with Multiple Virtual Ring Groups Example Configuration for Router ASRB with Multiple Virtual Ring Groups Example Configuring Source-Route Bridging BC-149Router A SRB over FDDI Configuration ExamplesSRB over FDDI Fast-Switching Example Configuration for Router BSRB over Frame Relay Configuration Example Adding a Static RIF Cache Entry Example Configuration of Router AConfiguration on Router B Configuration on Router CAdding a Static RIF Cache Entry for a Two-Hop Path Example SR/TLB for a Simple Network 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 Physical configuration LNM for a More Complex Network ExampleSRB Configuration Examples BC-158 Bridging and IBM Networking Configuration GuideNetBIOS Access Filters Example BC-160 Bridging and IBM Networking Configuration Guide Filtering Bridged Token Ring Packets to IBM Machines ExampleConfiguring Source-Route Bridging BC-161 Administrative Access Filters-Filtering SNAP Frames on Output ExampleFigure 68 shows a router connecting four Token Rings Administrative Access Filters-Filtering SNAP Frames on Output ExampleCreating Access Filters Example Figure 69 Network Configuration Using NetBIOS Access Filters Access Filters ExampleFast-Switching Example Access Filters ExampleAutonomous Switching Example SRB Configuration ExamplesBC-164 Bridging and IBM Networking Configuration Guide