Specifications

Changing Standard Spanning Tree Parameters
RoamAbout Mobility System Software Configuration Guide 13-3
Port Priority
Portpriorityistheeligibilityoftheporttobethedesignatedporttotherootbridge,andthuspart
ofthepathtotherootbridge.WhentheRoamAboutSwitchhasmorethanonelinktotheroot
bridge,STPusesthelinkwiththelowestpriorityvalue.Youcan
setthisparameteronan
individualportbasis,forallVLANstheportisin,orforspecificVLANs.
Specifyapriorityfrom0(highestpriority)through255(lowestpriority).Thedefaultis128.
Changing the Bridge Priority
Tochangethebridgepriority,usethefollowingcommand:
set spantree priority value {all | vlan vlan-id}
Specifyabridgepriorityfrom0through65,535. Thedefaultis32,768.Thealloptionappliesthe
changegloballytoallVLANs.Alternatively,specifyanindividualVLAN.
Example
TochangethebridgepriorityofVLANpinkto69,typethefollowingcommand:
RBT-8100# set spantree priority 69 vlan pink
success: change accepted.
Table 13-1 SNMP Port Path Cost Defaults
Port Speed Link Type Default Port Path Cost
1000 Mbps Full Duplex Aggregate Link (Port Group) 19
1000 Mbps Full Duplex 4
100 Mbps Full Duplex Aggregate Link (Port Group) 19
100 Mbps Full Duplex 18
100 Mbps Half Duplex 19
10 Mbps Full Duplex Aggregate Link (Port Group) 19
10 Mbps Full Duplex 95
10 Mbps Half Duplex 100