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New Member

Unstable 7920

With our conversion to the 4404 Controller

we bought the Lwapps and upgraded our current 1200 series APs.

Some of the 7920 still work, but a few others are not regersting and rebooting.

I looked @ the clients and it is Associated but not autheticated. Says DHCP-REQ, but DHCP required is turned off. Any suggestions?

3 REPLIES
Cisco Employee

Re: Unstable 7920

This means you have DHCP address assignment enabled on the voice ssid.

This should be disabled.Also mentioned in the 7921 deployment guide @ http://www.cisco.com/univercd/cc/td/doc/product/voice/c_ipphon/english/wip7921/7921dply.pdf.

Should also set the 802.1p tag for the platinum qos profile to 7 vs 6 as when set to 6, packets can get aged out quicker and cause issues for the 7920 in idle as it only wakes up every 2 seconds.

Also if using CCKM, should upgrade to 4.0.217.0 as there were some fixes there.

New Member

Re: Unstable 7920

I do have it disabled for the voice ssid and the other ssid.

802.1p tag is not set or was it configured.

Cisco Employee

Re: Unstable 7920

If the client is getting into DHCP_REQD state and not enabled, then we have an issue.

Would toggle the state on and back off then.

Possibly open a TAC case to assist you further.

For 802.1p tag, the default is 6 even if 802.1p is not configured or blank.

So if you apply platinum qos profile to the voice ssid, ensure you set the 802.1p tag to 7.

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