Avaya P580 - Manual (Page 583)

Document No. 10-300090, Issue 1 28-5
Rapid Spanning Tree Protocol
set port spantree force-protocol-migration
Command Mode Global Configuration.
Description Forces a bridge port to send out RSTP BPDUs. By forcing a bridge port to
send RSTP BPDUs, you can determine whether legacy 802.1D bridges are
present on a LAN segment.
If you remove a legacy 802.1D bridge from a segment, other RSTP bridges
on the segment cannot detect the removal so they continue sending STP
BPDUs. However, if you force a bridge port to send RSTP BPDUs, they
trigger other RSTP bridges on the segment to generate RSTP BPDUs again.
If the switch is running common Spanning Tree, this command has no
effect.
Syntax set port spantree force-protocol-migration <mod-swport-range> [...,<mod-
swport-range>] {802.1D | vlan {<vlan-id> | name <vlan-name>}}
Table 28-4. Parameters, Keywords, Arguments
Name Definition
<mod-swport-
range> The module and port or port range.
802.1D Use this keyword if the switch is running IEEE 802.1D
Spanning Tree. For a detailed description of IEEE 802.1D
Spanning Tree, see Chapter 7, “Configuring Rapid
Spanning Tree,” in User Guide for the Avaya P580 and
P882 Multiservice Switches, Software Version 6.1.
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