10-25-2007 11:19 PM - edited 07-03-2021 02:50 PM
hi,
i need some help. whats the best known configuration for a voice wlan with 7920 IP Phones?
my config is following:
Radio Policy: 802.11b/g only
Admin Status Enabled
Session Timeout (secs): 0
Quality of Service (QoS): Platinum (voice)
WMM Policy: Disabled
7920 Phone Support:
- no Client CAC Limit
- no AP CAC Limit
Broadcast SSID: disabled
Aironet IE: Enabled
Allow AAA Override: Enabled
Client Exclusion: Enabled **
- Timeout Value (secs): 60
DHCP Server: Override disabled
DHCP Addr. Assignment: Required
MFP Version Required: 1
MFP Signature Generation: enabled
H-REAP Local Switching: disabled
Layer2 Security: WPA-TKIP PSK
is that ok?
thx for your help...
Solved! Go to Solution.
10-26-2007 05:42 PM
If planning to enable TKIP with the 7920, recommend to reduce the TKIP countermeasure holdoff time to 0, which can be done via the controller CLI "config wlan security tkip hold-down
7920 doesn't support MFP, but is only supported currently with AES, which also 7920 doesn't support.
Would recommend using 4.1.185.0 on the WLC and 3.02 on the 7920.
10-26-2007 05:42 PM
If planning to enable TKIP with the 7920, recommend to reduce the TKIP countermeasure holdoff time to 0, which can be done via the controller CLI "config wlan security tkip hold-down
7920 doesn't support MFP, but is only supported currently with AES, which also 7920 doesn't support.
Would recommend using 4.1.185.0 on the WLC and 3.02 on the 7920.
10-26-2007 05:44 PM
Oh by the way. Do NOT enable DHCP required. This can cause big issues.
If the client session is terminated, then the client must re-DHCP in order for the WLC to start forwarding traffic again. If 7920 is on call, it will not re-DHCP until the call is ended. If in idle, will have to exhaust the 90 second CallManager keepalive timoeut. So highly recommended to disable this for the voice vlan.
10-29-2007 04:06 AM
hi migilles,
my wlc version doesnt support this command "config wlan security tkip hold-down
seems that is a newer cmd.
thx
10-29-2007 08:53 AM
Think maybe it was implemented in 4.1 code.
Would recommend 4.1.185.0.
11-05-2007 02:07 AM
hi migilles,
i disabled DHCP required and MFP.
now its working fine.
thx for your help
11-05-2007 08:37 PM
Glad to hear. Disabling DHCP required is documented in the 7921G Deployment Guide on page 22.
http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7921/7921dply.pdf
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