Cisco Systems BC-109 manual SRB and Routing Certain Protocols Example, Multiport SRB Example

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SRB Configuration Examples

SRB and Routing Certain Protocols Example

In the following configuration, IP, XNS, and IPX are routed, while all other protocols are bridged between rings. While not strictly necessary, the Novell IPX and XNS network numbers are set consistently with the IP subnetwork numbers. This makes the network easier to maintain.

xns routing 0000.0C00.02C3

!

novell routing 0000.0C00.02C3

!

interface tokenring 0

ip address 131.108.129.2 255.255.255.0 xns network 129

novell network 129 source-bridge 129 1 130 source-bridge spanning multiring all

!

interface tokenring 1

ip address 131.108.130.2 255.255.255.0 xns network 130

novell network 130 source-bridge 130 1 129 source-bridge spanning multiring all

!

interface ethernet 0

ip address 131.108.2.68 255.255.255.0 xns network 2

novell network 2

Multiport SRB Example

Figure 56 shows an example configuration of a four-port Token Ring source-route bridge. Rings 1000, 1001, 1002, and 1003 are all source-route bridged to each other across ring group 7.

Figure 56 Four-Port Source-Route Bridge

	Ring
	1001
	T1
Ring T2	T0 Ring
1002	1000

T3

Ring Group 7	Ring
	Ring
	1003

S1103a

BC-148Bridging 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