Controller Based WLANs

Product and Software: This article applies to ArubaOS 3.x and later.

Use a firewall ACL to track the session and disable the ARM scanning during a voice conversation. This simple solution works when the “ARM voice-aware option” is not available.

Here is a sample ACL for Spectralink and Vocera.

ip access-list session spectralink
  any any svc-svp permit disable-scanning log queue high tos 46
  any host 224.0.1.116 any permit disable-scanning log queue high tos 46
  any any udp 5001 5008 permit disable-scanning log queue high tos 46
  any any svc-tftp permit disable-scanning queue high tos 46
  user any udp 68 deny  
  any any svc-dhcp permit
  any any svc-icmp permit
  any any svc-syslog permit
**********************************
ip access-list session aruba-vocera
  any any udp 5002 permit disable-scanning queue high tos 46
  any any udp 5100 5199 permit disable-scanning queue high tos 46
  any any udp 5200 permit disable-scanning queue high tos 46
  any any udp 5300 5399 permit disable-scanning queue high tos 46
  any any udp 5400 permit disable-scanning queue high tos 46
  any any udp 5555 permit disable-scanning queue high tos 46
  any any udp 5556 permit disable-scanning queue high tos 46