Ascom Wifi IP Phones with Cisco 4400 WLAN Controllers

[Anvar Mohammed]

hi,

i have 2 4400 WLAN Controllers in same Network , but Ascom IP Phones which is associated to theses defferent Controllers can reach via Network and can ring the phones but not able here the voice while they are associated to deffrent WLCs. There is no issues if both Phones are assoicated to same WLC.

any body can suggest me what will be the problem with this????

thanks,

Anvar

[Stephen Rodriguez]

Anvar,

     When the phones are on the same WLC the callers can hear each other, but when they are on different WLC they can't?

Are the phones in the same subnet on both WLC?  What version of code is on the WLC?

Steve

[Anvar Mohammed]

Hi sir,

phones are in the same subnet , also both WLC are in the same subnet, also phones are ringing even at deffrent WLCs, but only problem can't talk each other.

firmware version of both WLCs are 7.0

thanks,

Anvar

[Stephen Rodriguez]

ok, and they are in the same mobility group?

7.0.98.0, 7.0.116.0, 7.0.220.0, or 7.0.230.0?

can you post the show wlan < wlan ID of the phones > from both controllers?

Steve

[Anvar Mohammed]

sir,

  both codes are 7.0.166.0

  and both are in the same mobility group

plase find below output of show wlan command

Controller-1

(Cisco Controller) >show wlan 3

WLAN Identifier.................................. 3

Profile Name..................................... Voice-Vlan-Ground Floor

Network Name (SSID).............................. Minhalvoice

Status........................................... Enabled

MAC Filtering.................................... Enabled

Broadcast SSID................................... Disabled

AAA Policy Override.............................. Disabled

Network Admission Control

  Radius-NAC State............................... Disabled

  SNMP-NAC State................................. Disabled

  Quarantine VLAN................................ 0

Maximum number of Associated Clients............. 0

Number of Active Clients......................... 4

Exclusionlist Timeout............................ 60 seconds

Session Timeout.................................. 1800 seconds

CHD per WLAN..................................... Disabled

Webauth DHCP exclusion........................... Disabled

Interface........................................ voicevlan-gr

Multicast Interface.............................. Not Configured

--More-- or (q)uit

WLAN ACL......................................... unconfigured

DHCP Server...................................... Default

DHCP Address Assignment Required................. Disabled

Static IP client tunneling....................... Disabled

Quality of Service............................... Platinum (voice)

Scan Defer Priority.............................. 4,5,6

Scan Defer Time.................................. 100 milliseconds

WMM.............................................. Allowed

WMM UAPSD Compliant Client Support............... Disabled

Media Stream Multicast-direct.................... Disabled

CCX - AironetIe Support.......................... Enabled

CCX - Gratuitous ProbeResponse (GPR)............. Disabled

CCX - Diagnostics Channel Capability............. Disabled

Dot11-Phone Mode (7920).......................... Disabled

Wired Protocol................................... None

IPv6 Support..................................... Disabled

Passive Client Feature........................... Disabled

Peer-to-Peer Blocking Action..................... Disabled

Radio Policy..................................... 802.11g only

DTIM period for 802.11a radio.................... 1

DTIM period for 802.11b radio.................... 1

Radius Servers

   Authentication................................ Global Servers

--More-- or (q)uit

   Accounting.................................... Global Servers

   Dynamic Interface............................. Disabled

Local EAP Authentication......................... Disabled

Security

   802.11 Authentication:........................ Open System

   Static WEP Keys............................... Disabled

   802.1X........................................ Disabled

   Wi-Fi Protected Access (WPA/WPA2)............. Disabled

   CKIP ......................................... Disabled

   Web Based Authentication...................... Disabled

   Web-Passthrough............................... Disabled

   Conditional Web Redirect...................... Disabled

   Splash-Page Web Redirect...................... Disabled

   Auto Anchor................................... Disabled

   H-REAP Local Switching........................ Disabled

   H-REAP Local Authentication................... Disabled

   H-REAP Learn IP Address....................... Enabled

   Client MFP.................................... Optional but inactive (WPA2 not configured)

   Tkip MIC Countermeasure Hold-down Timer....... 60

Call Snooping.................................... Disabled

Roamed Call Re-Anchor Policy..................... Disabled

SIP CAC Fail Send-486-Busy Policy................ Enabled

--More-- or (q)uit

SIP CAC Fail Send Dis-Association Policy......... Disabled

Band Select...................................... Disabled

Load Balancing................................... Disabled

Mobility Anchor List

WLAN ID     IP Address            Status

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

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Controller-2

(Cisco Controller) >show wlan 3

WLAN Identifier.................................. 3

Profile Name..................................... Voice-Vlan-Ground Floor

Network Name (SSID).............................. Minhalvoice

Status........................................... Enabled

MAC Filtering.................................... Enabled

Broadcast SSID................................... Disabled

AAA Policy Override.............................. Disabled

Network Admission Control

  Radius-NAC State............................... Disabled

  SNMP-NAC State................................. Disabled

  Quarantine VLAN................................ 0

Maximum number of Associated Clients............. 0

Number of Active Clients......................... 15

Exclusionlist Timeout............................ 60 seconds

Session Timeout.................................. 1800 seconds

CHD per WLAN..................................... Disabled

Webauth DHCP exclusion........................... Disabled

Interface........................................ voicevlan-gr

Multicast Interface.............................. Not Configured

--More-- or (q)uit

WLAN ACL......................................... unconfigured

DHCP Server...................................... Default

DHCP Address Assignment Required................. Disabled

Static IP client tunneling....................... Disabled

Quality of Service............................... Platinum (voice)

Scan Defer Priority.............................. 4,5,6

Scan Defer Time.................................. 100 milliseconds

WMM.............................................. Allowed

WMM UAPSD Compliant Client Support............... Disabled

Media Stream Multicast-direct.................... Disabled

CCX - AironetIe Support.......................... Enabled

CCX - Gratuitous ProbeResponse (GPR)............. Disabled

CCX - Diagnostics Channel Capability............. Disabled

Dot11-Phone Mode (7920).......................... Disabled

Wired Protocol................................... None

IPv6 Support..................................... Disabled

Peer-to-Peer Blocking Action..................... Disabled

Radio Policy..................................... 802.11g only

DTIM period for 802.11a radio.................... 1

DTIM period for 802.11b radio.................... 1

Radius Servers

   Authentication................................ Global Servers

   Accounting.................................... Global Servers

--More-- or (q)uit

   Dynamic Interface............................. Disabled

Local EAP Authentication......................... Disabled

Security

   802.11 Authentication:........................ Open System

   Static WEP Keys............................... Disabled

   802.1X........................................ Disabled

   Wi-Fi Protected Access (WPA/WPA2)............. Disabled

   CKIP ......................................... Disabled

   IP Security................................... Disabled

   IP Security Passthru.......................... Disabled

   Web Based Authentication...................... Disabled

   Web-Passthrough............................... Disabled

   Conditional Web Redirect...................... Disabled

   Splash-Page Web Redirect...................... Disabled

   Auto Anchor................................... Disabled

   H-REAP Local Switching........................ Disabled

   H-REAP Local Authentication................... Disabled

   H-REAP Learn IP Address....................... Enabled

   Client MFP.................................... Optional but inactive (WPA2 not configured)

   Tkip MIC Countermeasure Hold-down Timer....... 60

Call Snooping.................................... Disabled

Roamed Call Re-Anchor Policy..................... Disabled

--More-- or (q)uit

SIP CAC Fail Send-486-Busy Policy................ Enabled

SIP CAC Fail Send Dis-Association Policy......... Disabled

Band Select...................................... Disabled

Load Balancing................................... Disabled

Mobility Anchor List

WLAN ID     IP Address            Status

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

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

[Stephen Rodriguez]

ok, that looks ok with one exception.  There is no wired protocol.  Can you go check the QoS profiles and the Platinum, and check to see if the wired protocol is set to 802.1p?

You'll also want to make sure that the LAN supports the QoS.  WLC trunk should be mls qos trust cos, the AP should be mls qos trust dscp, and all the switch uplinks should be mls qos trust dscp as well.

Steve

[Anvar Mohammed]

Hi steve,   i have a small correction .... First controller is 4402 and other is 5508. can this be the issue . am doing the steps as per your suggestion.

thanks,

Anvar

[Stephen Rodriguez]

the controller type shoudln't matter for this type of issue.

Steve

[Anvar Mohammed]

sir,

i did it all your suggested but still the issue is there. do we need to try something more ???

Anvar

[Leo Laohoo]

System Planning - Ascom VoWiFi System