342 BigIron RX Series Configuration Guide
53-1002253-01
IEEE Single Spanning Tree (SSTP)
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The commands shown above override the global setting for STP priority and set the priority to 10 for
port 1/1.
Here is the syntax for the global STP parameters.
Syntax: [no] spanning-tree single [forward-delay <value>]
[hello-time <value>] | [maximum-age <time>] | [priority <value>]
Here is the syntax for the STP port parameters.
Syntax: [no] spanning-tree single [ethernet <slot>/<portnum> path-cost <value> | priority
<value>]
For the parameter definitions and possible values, refer to “Default STP port parameters” on
page 329.
Both commands listed above are entered at the global CONFIG level.
Also, you can use the rstp single command to control the topology for VLANs. Refer to “Enabling or
disabling RSTP on a single spanning tree” on page 386.
Displaying SSTP information
To verify that SSTP is in effect, enter the following commands at any level of the CLI.
For information on the command syntax, refer to “Displaying STP information” on page 332.
BigIron RX(config)# show spanning-tree
VLAN 4095 - STP instance 0
--------------------------------------------------------------------
STP Bridge Parameters:
Bridge Bridge Bridge Bridge Hold LastTopology Topology
Identifier MaxAge Hello FwdDly Time Change Change
hex sec sec sec sec sec cnt
8000000480a04000 20 2 15 1 0 0
RootBridge RootPath DesignatedBridge Root Max Hel Fwd
Identifier Cost Identifier Port Age lo Dly
hex hex sec sec sec
8000000480a04000 0 8000000480a04000 Root 20 2 15
STP Port Parameters:
Port Prio Path State Designat- Designated Designated
Num rity Cost ed Cost Root Bridge
1/3 128 4 DISABLED 0 0000000000000000 0000000000000000
1/13 128 4 DISABLED 0 0000000000000000 0000000000000000
SSTP members: 10 20 30 99 to 100