IP phone does not work while Connecting IP Phones to Switches through NAC Authentication and Voice VLAN.

IP phone does not work while Connecting IP Phones to Switches through NAC Authentication and Voice VLAN.

After plug out and plug in cable from the phone then IP phone goes in the same stage its showing retrying and not be able to sign in.

Then after implementing this step [switch-aaa]cut access-user user-id 968

Then IP phone comes up.

version: V200R008C00SPC500

Customer follow the product document as below:

http://support.huawei.com/hedex/pages/EDOC1000135317AEG0221R/06/EDOC1000135317AEG0221R/06/resources/dc/dc_cfgcase_ip-voice_0011.html?ft=0&fe=10&hib=12.3.4.1.14&id=dc_cfg_ip-voice_0008_youhua&text=Example%20for%20Connecting%20IP%20Phones%20to%20Switches%20Through%20NAC%20Authentication%20and%20Voice%20VLAN&docid=EDOC1000135317

Below is the test step:

<switch>dis access-user interface g 0/0/8

Info: No online user.

plug in the IP Phone.

<switch>sys

Enter system view, return user view with Ctrl+Z.

[switch]dis access-user interface g 0/0/8

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

 UserID Username                IP address       MAC            Status

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

 956    MISHARI\mkamran         172.15.32.252    6400-6a34-0402 Success

 968                            FE80::625:C5FF:FEDE:8F9B

                                                 0425-c5de-8f9b Success

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

 Total: 2, printed: 2

Now, it is online with IPV6 address and not working, so we do below step:

[switch]aaa

[switch-aaa]cut access-user user-id 968

Info: Total 1  user(s) being cut.

===========================================================================

Then display access-user to check the IP phone, it is online with IPV4 address and working fine.

If the terminal sends ipv6 ARP, the switch refreshes the ipv6 table. So we need make it online with IPV4 address.