ProCurve 2610-PWR Technical Information download pdf (Page 170)

Spanning-Tree Operation

802.1s Multiple Spanning Tree Protocol (MSTP)

Syntax: spanning-tree force-version < stp-compatible | rstp-operation | mstp-

operation >

Sets the spanning-tree compatibility mode. When the switch

is configured with MSTP mode, this command forces the

switch to emulate behavior of earlier versions of spanning tree

protocol or return to MSTP behavior. The command is useful

in test or debug applications, and removes the need to

reconfigure the switch for temporary changes in spanning-

tree operation.

stp-compatible: The switch applies 802.1D STP operation on all

ports.

rstp-operation: The switch applies 802.1w operation on all ports

except those ports where it detects a system using 802.1D

Spanning Tree.

mstp-operation: The switch applies 802.1s MSTP operation on

all ports where compatibility with 802.1D or 802.1w spanning

tree protocols is not required.

This command is available when the protocol version is set to

mstp (see 'protocol-version' later).

Note that even when mstp-operation is selected, if the switch

detects an 802.1D BPDU or an 802.1w BPDU on a port, it

communicates with the device linked to that port using STP

or RSTP BPDU packets. Also, if errors are encountered as

described in the “Note on MSTP Rapid State Transitions” on

page 57, setting force-version to stp-compatible forces the MSTP

switch to communicate out all ports using operations that are

compatible with IEEE 802.1D STP.

Syntax: spanning-tree hello-time < 1..10 >

If MSTP is running and the switch is operating as the CIST

root for your network, this command specifies the time in

seconds between transmissions of BPDUs for all ports on the

switch configured with Use Global (the default). This

parameter applies in MSTP, RSTP and STP modes. During

MSTP operation, you can override this global setting on a per-

port basis with this command: spanning-tree < port-list > hello-

time < 1..10 > (page 63). (Default: 2.)

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ProCurve 2610-PWR Technical Information Page 170