Switch# show diagnostics online module 5
Switch# show environment temperatures
Switch# show fabric utilization module 5
After installation, run these validation commands:
If your network is configured for auto-registration: cisco 851710 install
If you have a second 851710 in Slot 6:
Switch# configure terminal
Switch(config)# switch virtual domain 100
Switch(config-vs-domain)# switch 5
Switch(config-vs-domain)# switch 6
Switch(config-vs-domain)# exit
Switch(config)# interface port-channel 1
Switch(config-if)# switch virtual link 1
| Problem | Likely Cause | Solution |
|---------|--------------|----------|
| No console output | Wrong baud rate | Set terminal to 9600, then cycle power |
| Ports show down/up | VLAN mismatch on trunk | Verify native VLAN and allowed VLANs on switch port |
| License not accepted | SKU mismatch or expired | Check license type (HA, AP count) against model |
| APs not joining | Time/date mismatch | Configure NTP: config time ntp server <IP> |
| Web GUI inaccessible | HTTP not enabled or port blocked | Enable via CLI; check firewall | Switch# show diagnostics online module 5 Switch# show