Enabling Or Disabling Rstp On A Single Spanning Tree; Disabling Or Enabling Rstp On A Port; Changing Rstp Bridge Parameters - Dell PowerConnect B-RX Configuration Manual

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Configuring RSTP parameters
BigIron RX(config)# vlan 10
BigIron RX(config-vlan-10)# rstp
Syntax: [no] rstp

Enabling or disabling RSTP on a single spanning tree

To globally enable RSTP for all ports of a single spanning tree, enter the following command.
BigIron RX(config)# rstp single
Syntax: [no] rstp single

Disabling or enabling RSTP on a port

The rstp command must be used to initially enable RSTP on ports. Both commands enable RSTP on
all ports that belong to the VLAN or to the single spanning tree.
Once RSTP is enabled on a port, it can be disabled on individual ports. RSTP that have been
disabled on individual ports can then be enabled as required.
NOTE
If you change the RSTP state of the primary port in a trunk group, the change affects all ports in that
trunk group.
To disable or enable RSTP on a port, enter commands such as the following.
BigIron RX(config)# interface 1/1
BigIron RX(config-if-e1000-1/1)# no spanning-tree
Syntax: [no] spanning-tree [protect]
The value of protect will drop the BPDUs received on that specific interface.

Changing RSTP bridge parameters

When you make changes to RSTP bridge parameters, the changes are applied to individual ports
on the bridge.
To designate a priority for a bridge, enter a command such as the following at the VLAN level.
BigIron RX(config)# vlan 20
BigIron RX(config-vlan-20)# rstp priority 0
To make this change in the default VLAN, enter the following commands.
BigIron RX(config)# vlan 1
BigIron RX(config-vlan-1)# rstp priority 0
Syntax: spanning-tree 802-1w [forward-delay <value>] | [hello-time <value>] | [max-age <time>]
| [force-version <value>] | [priority <value>]
The forward-delay <value> parameter specifies how long a port waits before it forwards an RST
BPDU after a topology change. Possible values: 4 – 30 seconds. The default is 15 seconds.
The hello-time <value> parameter specifies the interval between two hello packets. Possible
values: 1 - 10 seconds. The default is 2 seconds.
386 BigIron RX Series Configuration Guide
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