01-13-2008 11:07 PM - edited 03-05-2019 08:27 PM
Hi Sir,
I have a Catalyst 6513 with SUP720. IOS version is 12.2(18)SXF12. I enabled extended system ID as follows:
!
spanning-tree mode pvst
spanning-tree extend system-id
spanning-tree vlan 1 priority 12288
!
Switch#sh spann vla 1
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 12289
Address 0011.5d64.6480
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 12289 (priority 12288 sys-id-ext 1)
Address 0011.5d64.6480
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Switch#sh span sum
Switch is in pvst mode
Root bridge for: VLAN0001
EtherChannel misconfig guard is enabled
Extended system ID is disabled
Portfast Default is disabled
PortFast BPDU Guard Default is disabled
Portfast BPDU Filter Default is disabled
Loopguard Default is disabled
UplinkFast is disabled
BackboneFast is disabled
Pathcost method used is short
From the output of "sh spanning-tree vlan 1", it seems to show the switch is using extended system ID. However the output of "sh spanning-tree summary" shows extended system ID is disabled. Why? Is it just cosmetic issue?
I have another exactly identical Catalyst 6513 that shows extended sys ID is enabled in the output of "sh spann summ".
Please advise.
Thank you.
B.Rgds,
Lim TS
01-18-2008 01:22 PM
Better you migrate to higher version.
01-19-2008 09:06 AM
Please post the output from typing
sh catalyst6000
__
Edison.
01-19-2008 09:18 AM
BTW, looking at the output a bit closer, you are looking at a cosmetic bug.
If you see these 2 entries.
Root ID Priority 12289
Bridge ID Priority 12289 (priority 12288 sys-id-ext 1)
Extended system ID is enabled.
The purpose of the command is to add the Vlan number + the configured priority for such Vlan.
HTH,
__
Edison.
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