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System Health Monitoring

Other System Monitoring Considerations

109

Best Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series

Step 10 Use the show spanning-tree detail command to frequently check STP stability.

This command displays network stability information about the number of topology changes within each

VLAN, the last time a TCN was received, and so forth. Frequently monitoring this information is critical

to maintaining overall health of the switch and network.

show spanning-tree summary

Switch is in pvst mode

Root bridge for: VLAN0001, VLAN0011, VLAN0015, VLAN0100-VLAN0101

VLAN0881-VLAN0883

Extended system ID is enabled

Portfast Default is disabled

PortFast BPDU Guard Default is disabled

Portfast BPDU Filter Default is disabled

Loopguard Default is disabled

EtherChannel misconfig guard is enabled

UplinkFast is disabled

BackboneFast is disabled

Configured Pathcost method used is short

Name Blocking Listening Learning Forwarding STP Active

---------------------- -------- --------- -------- ---------- ----------

VLAN0001 0 0 0 2 2

VLAN0011 0 0 0 1 1

VLAN0015 0 0 0 1 1

VLAN0100 0 0 0 1 1

VLAN0101 0 0 0 1 1

VLAN0777 0 0 0 2 2

VLAN0881 0 0 0 1 1

Name Blocking Listening Learning Forwarding STP Active

---------------------- -------- --------- -------- ---------- ----------

VLAN0882 0 0 0 1 1

VLAN0883 0 0 0 1 1

---------------------- -------- --------- -------- ---------- ----------

9 vlans 0 0 0 11 11

Cisco Unified Access CT5760 Guide

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