IdentiFi Wireless APs do not have either primary or backup data tunnels and uptime is not displaying in AP Availability report

Informações

 
Title IdentiFi Wireless APs do not have either primary or backup data tunnels and uptime is not displaying in AP Availability report
Symptoms
  • IdentiFi Wireless APs do not have either primary or backup data tunnels
  • Uptime is not displaying in AP Availability report
  • AP's radios will not turn on
  • SSIDs are not being broadcast
  • Users will fail to authenticate when the packet sizes are large (Certificate Exchange)
  • Access Points will not load a firmware file across the WAN 
Environment
  • IdentiFi Wireless
  • All Access Point Models 
  • Firmware Any
Cause
  • Overhead encapsulation used in VPN connections causes fragmentation of WASSP tunneling packets
  • The access point is not setting it's MTU size via MTU  Path Discovery
  • Same is true for any encapsulated protocol (MPLS, Metro-E, Etc.)
Resolution
  • Confirm why MTU Path Discovery is not working on the network. This is usually because firewalls are not allowing PMTU discovery
  • Statically Setting MTU on the access point:
  1. Let's find out what the MTU size is you need to statically set
  2. Ping from a DOS prompt on the local side to the AP on the remote side - ping -l 1400 -f 
  3. Continue to ping with various sizes until you find what the maximum MTU size is
  4. Click AP tab > APs dropdown list > select the AP in question
  5. Click Static Configuration tab
  6. Change Tunnel MTU setting from value found in your ping test. Example: 1500 to 1400
  7. Click Save
Additional notes

 

 

Fonte: https://gtacknowledge.extremenetworks.com/articles/Solution/IdentiFi-Wireless-AP-s-do-not-have-backup-data-tunnels-and-uptime-is-not-displaying-in-AP-Availability-report

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