Example (R)STP Configuration - Standard VLAN Introduction
4-75
Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
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show stp
--- STP Information ----------------------------------------------------------
Spanning Tree Type...................... RSTP
Instance Name......................... MAIN (0)
Instance State........................ ENABLED
Root Bridge ID Priority............ 32768
Root Bridge ID MAC Address....... 00:0C:25:00:06:AD
Max Age (seconds)..................... 20
Hello Time (seconds).................. 2
Forward Delay (seconds)............... 15
Bridge ID Priority................. 32768 (priority 32768 mstid 0)
Bridge ID MAC Address............ EC:CD:6D:03:10:CB
Bridge Max Age (seconds).............. 20
Bridge Hello Time (seconds)........... 2
Bridge Forward Delay (seconds)........ 15
Int Role State Cost Prio.Number Type
----- ---------- ---------- ---------- ----------- -------------------------
0.0 ALTERNATE DISCARDING 20000 128.321 RSTP
0.20 DESIGNATED FORWARDING 200000 128.341 RSTP
0.21 DESIGNATED FORWARDING 200000 128.342 RSTP
0.22 ROOT FORWARDING 20000 128.343 RSTP
1.2 DESIGNATED FORWARDING 2000 128.387 RSTP
1.3 DESIGNATED FORWARDING 2000 128.388 RSTP
11.0 DESIGNATED FORWARDING 20000 128.1025 RSTP
Change the SBx3112’s root port
The root port switches from interface 0.22 to 0.0, while interface 0.22 becomes a discarding alternate port.
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set stp interface 0.0 pathcost 2000 Reduces the path cost from 20000 to 2000 on
interface 0.0.
Verify the root port change
TABLE 4-12 Configuration Procedure for RSTP
Step Command Description/Notes
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