Configuring Data-Link Switching Plus
DLSw+ Configuration Task List
Mapping DLSw+ to a Local Data-Link Control
In addition to configuring local and remote peers, you must map one of the following local data-link controls to DLSw+:
•Token Ring, page 292
•Ethernet, page 293
•SDLC, page 293
•QLLC, page 294
•FDDI, page 295
Token Ring
Traffic that originates from Token Ring is source-route bridged from the local ring onto a source-bridge ring group and then picked up by DLSw+. You must include a source-bridgering-groupcommand that specifies a virtual ring number when configuring Token Ring with DLSw+. In addition, you must configure the source-bridgecommand that tells the DLSw+ router to bridge from the physical Token Ring to the virtual ring.
To specify a virtual ring number, use the following command in global configuration mode:
Command | Purpose |
| |
Router(config)# source-bridge ring-group | Defines a virtual ring. |
ring-group [virtual-mac-address] | |
| |
To enable DLSw+ to bridge from the physical Token Ring ring to the virtual ring, use the following command in interface mode:
Command | Purpose |
| |
Router(config-if)# source-bridge | Defines SRB on interface. |
source-ring-number bridge-number | |
target-ring-number | |
| |
To enable single-route explorers, use the following command in interface mode:
Command | Purpose |
| |
Router(config-if)# source-bridgespanning | Enables single-route explorers. |
| |
Configuring the source-bridge spanning command is required because DLSw+ uses single-route explorers by default.
The following command configures a source-bridge ring-group and a virtual ring with a value of
100 to DLSw+:
source-bridge ring-group 100 int T0
source-bridge 1 1 100 source-bridge spanning
The ring-groupnumber specified in the source-bridgecommand must be the number of a defined source-bridge ring-group or DLSw+ will not see this interface.
| Cisco IOS Bridging and IBM Networking Configuration Guide |
BC-292 | 78-11737-02 |
