Cisco 2950G 24 Software Configuration Guide - Page 309
Configuring the Switch Priority, Configuring the Hello Time
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Chapter 12 Configuring RSTP and MSTP Configuring RSTP and MSTP Features Configuring the Switch Priority You can configure the switch priority and make it more likely that the switch will be chosen as the root switch. Note Exercise care when using this command. For most situations, we recommend that you use the spanning-tree mst instance-id root primary and the spanning-tree mst instance-id root secondary global configuration commands to modify the switch priority. Beginning in privileged EXEC mode, follow these steps to configure the switch priority: Step 1 Step 2 Command configure terminal spanning-tree mst instance-id priority priority Step 3 Step 4 Step 5 end show spanning-tree mst instance-id copy running-config startup-config Purpose Enter global configuration mode. Configure the switch priority for an MST instance. • For instance-id, the range is 0 to 15. • For priority, the range is 0 to 61440 in increments of 4096; the default is 32768. The lower the number, the more likely the switch will be chosen as the root switch. Valid priority values are 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864, 40960, 45056, 49152, 53248, 57344, and 61440. All other values are rejected. Return to privileged EXEC mode. Verify your entries. (Optional) Save your entries in the configuration file. To return the switch to its default setting, use the no spanning-tree mst instance-id priority global configuration command. Configuring the Hello Time You can configure the interval between the generation of configuration messages by the root switch by changing the hello time. Note Exercise care when using this command. For most situations, we recommend that you use the spanning-tree mst instance-id root primary and the spanning-tree mst instance-id root secondary global configuration commands to modify the hello time. 78-14982-01 Catalyst 2950 Desktop Switch Software Configuration Guide 12-19
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