Slow Convergence - HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual

You can enter the command with the realtime option to view periodic
updates of the spanning tree information without re-entering the command.
The CLI displays the information in a new screen. You can exit the screen
by pressing You can also pause and restart the display of the updates.
Ctrl+C.
(See Figure 10-7).
--------------------------------------------------------------------
STP 0
Bridge Group 1
Spanning Tree enabled protocol ieee 802.1w (Rapid Spanning-Tree)
Root ID Priority
Address
Cost
Port
Hello Time
Bridge ID Priority
Address
Aging Time
Interface Role Sts Cost
---------------- ---- --- --------- -------- -----------------------
fr 1.1 Desg LIS 651
--------------------------------------------------------------------
Exit - 'Ctrl-C', Freeze - 'f', Resume - 'r'
Return to the command line
Figure 10-7. Viewing Real-Time Spanning Tree

Slow Convergence

The best way to solve slow convergence is to update all network devices from
STP to RSTP.
When a router running RSTP connects to an STP device, it automatically runs
STP on that interface. If you have recently updated network devices to RSTP,
you may need to force connecting router interfaces to stop running STP. Use
this enable mode command:
Syntax: clear spanning-tree detected-protocol [interface ethernet <slot>/<port>]
Bridging—Transmitting Non-IP Traffic or Merging Two Networks
32768
00:12:79:05:25:b0
651
2 (fr 1.1)
2 sec Max Age 20 sec
32768
00:12:79:05:25:d4
300
Prio.Nbr Type
128.2
Stop and start the refresh
Troubleshooting Spanning Tree
Forward Delay 15 sec
P2p
10-27