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There were some DHCP-Leases from the controller, but the clients appear as STA without IP-Addresses.

Publication Date:  2017-10-29 Views:  573 Downloads:  0
Issue Description

Product: AC6005-8-PWR  version: V200R006C10SPC200

There were some DHCP-Leases from the controller, but the clients appear as STA without IP-Addresses.

 

<AC6005_WacklerDD_Controller01>dis station all

Rf/WLAN: Radio ID/WLAN ID

Rx/Tx: link receive rate/link transmit rate(Mbps)

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

STA MAC          AP ID Ap name                   Rf/WLAN  Band  Type  Rx/Tx      RSSI  VLAN      IP address       SSID

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

a854-b208-1f5d   2     AP4030DN_WacklerDD_SPOT01 1/1      5G    11a   36/6       -74   305      -                             WACDD-01

50a7-2ba6-46e2   2     AP4030DN_WacklerDD_SPOT01 0/1      2.4G  11n   59/54      -73   305   -                             WACDD-01

4083-de31-7446   5     AP4030DN_WacklerDD_SPOT04 1/1      5G    11a   36/36      -57   305   -                             WACDD-01

Handling Process

1. Display all the station

<AC6005_WacklerDD_Controller01>dis station all

Rf/WLAN: Radio ID/WLAN ID

Rx/Tx: link receive rate/link transmit rate(Mbps)

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

STA MAC          AP ID Ap name                   Rf/WLAN  Band  Type  Rx/Tx      RSSI  VLAN      IP address       SSID

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

a854-b208-1f5d   2     AP4030DN_WacklerDD_SPOT01 1/1      5G    11a   36/6       -74   305      -                             WACDD-01

50a7-2ba6-46e2   2     AP4030DN_WacklerDD_SPOT01 0/1      2.4G  11n   59/54      -73   305   -                             WACDD-01

4083-de31-7446   5     AP4030DN_WacklerDD_SPOT04 1/1      5G    11a   36/36      -57   305   -                             WACDD-01

 

2 check whether the client obtain the ip (a854-b208-1f5d  )

<AC6005_WacklerDD_Controller01>dis ip pool interface Vlanif305 used

  Pool-name      : Vlanif305

  Pool-No        : 0

  Lease          : 1 Days 0 Hours 0 Minutes

  Domain-name    : -

  DNS-server0    : -

  NBNS-server0   : -

  Netbios-type   : -

  Position       : Interface       Status           : Unlocked

  Gateway-0      : 192.168.20.51

  Network        : 192.168.20.0

  Mask           : 255.255.255.0

  VPN instance   : --

  Conflicted address recycle interval: -

 

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

         Start           End     Total  Used  Idle(Expired)  Conflict  Disable

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

    192.168.20.1  192.168.20.254   253    10          8(0)         0      235

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

  Network section :

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

  Index              IP               MAC      Lease   Status

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

     59   192.168.20.60    4083-de31-7446   2443   Used

     60   192.168.20.61    50a7-2ba6-46e2   2474   Used

     61   192.168.20.62    a854-b208-1f5d   24823   Used

     62   192.168.20.63    4cfa-ca60-a9e0      24828   Used

     63   192.168.20.64    2c55-d395-4420      24830   Used

     64   192.168.20.65    4cfa-ca61-36e0      24834   Used

     65   192.168.20.66    4cfa-ca60-3a60      24835   Used

     66   192.168.20.67    2c55-d395-41a0      26328   Used

     67   192.168.20.68    18de-d778-bb60      26329   Used

     68   192.168.20.69    4cfa-ca61-2fa0      26334   Used

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

 

3. Check the arp of the client (a854-b208-1f5d  )

 

[AC6005_WacklerDD_Controller01]dis arp all | include a854-b208-1f5d  

IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE        INTERFACE   VPN-INSTANCE

                                          VLAN/CEVLAN PVC                     

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

192.168.20.62    a854-b208-1f5d  18        D-0         Wlan-Dbss2:3

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

Total:4         Dynamic:2       Static:0     Interface:2  

 

4. Check whether the client can be reached (a854-b208-1f5d  )

 

[AC6005_WacklerDD_Controller01]ping 192.168.20.62   

  PING 192.168.20.62: 56  data bytes, press CTRL_C to break

    Reply from 192.168.20.62: bytes=56 Sequence=1 ttl=128 time=470 ms

    Reply from 192.168.20.62: bytes=56 Sequence=2 ttl=128 time=370 ms

    Reply from 192.168.20.62: bytes=56 Sequence=3 ttl=128 time=450 ms

    Reply from 192.168.20.62: bytes=56 Sequence=4 ttl=128 time=370 ms

    Reply from 192.168.20.62: bytes=56 Sequence=5 ttl=128 time=440 ms

 

  --- 192.168.20.62ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 370/420/470 ms

 

5. It show that the client have already obtain the ip, and the ac can also reach the client.

 Check the configuration of vap, we found that customer disable learn-client-address function.

 

vap-profile name WACDD-01

  forward-mode tunnel

  service-vlan vlan-id 305

  learn-client-address disable

  ip source check user-bind enable

  dhcp trust port

  ssid-profile WACDD-01

  security-profile WACDD-01

 

Usage Scenario

If a STA associates with an AP that has STA address learning enabled and obtains an IP address, the AP automatically reports the STA IP address to the AC to maintain the STA' IP address and MAC address binding entry

6. We told customer should enable it. And after change the configuration, customer said it was working fine.

 

<AC6005_WacklerDD_Controller01>dis station all

Rf/WLAN: Radio ID/WLAN ID

Rx/Tx: link receive rate/link transmit rate(Mbps)

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

STA MAC          AP ID Ap name                   Rf/WLAN  Band  Type  Rx/Tx      RSSI  VLAN  IP address     SSID

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

a854-b208-1f5d   2     AP4030DN_WacklerDD_SPOT01 1/1      5G    11a   36/6       -74   305      192.168.20.62                                WACDD-01

Root Cause

The root cause is that: the customer disable learn-client-address function. So the AP will not report the STA IP address to the AC to maintain the STA' IP address and MAC address binding entry

Solution

After the customer enable learn-client-address function. it is working fine.

Suggestions

First we should check if the client obtain the ip address, then check whether AC enable learning the STA address function.

END