Hi
I run on C6500 (SUP720) IOS 12.2(33)SXI5 and sometimes I got sporadic problems on production systems that I find really difficult troubleshoot.
The only thing I found strange is the following amount of STP active ports:
#sh spanning-tree summary totals
Switch is in rapid-pvst mode
Root bridge for: xxx
EtherChannel misconfig guard is enabled
Extended system ID is enabled
Portfast Default is disabled
Portfast Edge BPDU Guard Default is enabled
Portfast Edge BPDU Filter Default is disabled
Loopguard Default is disabled
Platform PVST Simulation is enabled
PVST Simulation Default is enabled but inactive in rapid-pvst mode
Bridge Assurance is enabled
UplinkFast is disabled
BackboneFast is disabled
Pathcost method used is short
Name Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
424 vlans 228 0 0 4037 4265
I see these number of virtual ports:
#sh vlan virtual-port
Slot 1
-------
Total slot virtual ports 1954
Slot 2
-------
Total slot virtual ports 1944
Slot 3
-------
Total slot virtual ports 262
Slot 4
-------
Total slot virtual ports 398
Slot 5
-------
Total slot virtual ports 423
Slot 6
-------
Total slot virtual ports 423
Slot 7
-------
Total slot virtual ports 372
Slot 8
-------
Total slot virtual ports 74
Slot 9
-------
Total slot virtual ports 148
Total chassis virtual ports 5998
On slot 1 and 2 I run WS-X6708-10GE.
My questions:
1) Why there is a difference in the total of STP active ports (4265) and vlan virtual port (5998) ?
2) Do you see any overcoming limits in these number ? to me total seems ok, I’m wondering if per slot or per port we overcome the limits of the device?
3) could be this issue the root cause of the problem ?
Tks
