Wireless Access

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New Contributor
Posts: 4
Registered: ‎08-15-2013

Client associated to Aruba but no ip address.

Hi,

 

I'm currently working as network engineer specializing in routing and switching. part of my job is to manage 2800 aruba AP. I got this issue and it's quite affecting a random machine.

 

Issue: Laptop is associated to Aruba AP, it says connected but limited connectivity. When I check the OV I can see that the master controller sees the machine. Information seen includes mac-address and windows platform only. IP address is left blank. I also check using cli but same thing, only mac-address. The funny thing is, our helpdesk alraedy reformatted the laptop twice. It's really weird, connected but it's not getting IP address from ip address pool.

 

Anyone from you who encountered this issue? Last time I changed something from registry, this time around doesnt help.  I even put static ip to machine but still cannot access internet. Wireless NIC card is updated to its latest driver running windows 7. It affect different laptop models [HP , Lenovo etc...]

 

Any help is greatly appreciated.

 

Thanks a lot,

Avila

Aruba
Posts: 1,643
Registered: ‎04-13-2009

Re: Client associated to Aruba but no ip address.

[ Edited ]

run the following command and note the IP, VLAN Derivation, VLAN default, VLAN assigned, and VLAN Current fields.    

 

show user mac <mac address>

 

Name: , IP: x.x.x.x, MAC: 00:21:5c:02:16:cd, Role:authenticated, ACL:60/0, Age: 00:00:25
Authentication: No, status: not started, method: , protocol: , server:
Role Derivation: AAA profile default role
VLAN Derivation: unknown
Idle timeouts: 0, ICMP requests sent: 0, replies received: 0, Valid ARP: 0
Mobility state: Wireless, HA: Yes, Proxy ARP: No, Roaming: No Tunnel ID: 0 L3 Mob: 0
Flags: internal=0, trusted_ap=0, l3auth=0, mba=0
Flags: innerip=0, outerip=0, guest=0, download=1, nodatapath=0, wispr=0
Auth fails: 0, phy_type: g-HT, reauth: 0, BW Contract: up:0 down:0, user-how: 14
Vlan default: 13, Assigned: 0, Current: 13 vlan-how: 0
Mobility Messages: L2=0, Move=0, Inter=0, Intra=0, ProxyArp=0, Flags=0x0
Tunnel=0, SlotPort=0x1041, Port=0x108b (tunnel 11)
................................................

------------------------------------------------
Systems Engineer, Northeast USA
ACCX | ACDX | ACMX

New Contributor
Posts: 4
Registered: ‎08-15-2013

Re: Client associated to Aruba but no ip address.

Hi Clembo, 

 

Appreciate your response. Please see below. The machine is associated but no IP address. 

 

 

(DC01-ALUWLC-L01) #show user mac A4:17:31:92:55:3D Flags: W: WMM client, A: Active, K: 802.11K client, B: Band Steerable PHY Details: HT: High throughput; 20: 20MHz; 40: 40MHz ss: spatial streams Association Table ----------------- Name bssid mac auth assoc aid l-int essid vlan-id tunnel-id phy assoc. time num assoc Flags ---- ----- --- ---- ----- --- ----- ----- ------- --------- --- ----------- --------- ----- W6-L5-AP10 d8:c7:c8:fa:73:43 a4:17:31:92:55:3d y y 3 5 RP-Wireless 634 0x1a46 g-HT-20-1ss 8m:21s 1 WA a4:17:31:92:55:3d-d8:c7:c8:fa:73:43 Stats ------------------------------------------ Parameter Value --------- ----- Channel 6 Channel Frame Retry Rate(%) 18 Channel Frame Low Speed Rate(%) 0 Channel Frame Non Unicast Rate(%) 5 Channel Frame Fragmentation Rate(%) 23 Channel Frame Error Rate(%) 11 Channel Bandwidth Rate(kbps) 1356 Channel Noise 95 Client Frame Retry Rate(%) 0 Client Frame Low Speed Rate(%) 0 Client Frame Non Unicast Rate(%) 0 Client Frame Fragmentation Rate(%) 0 Client Frame Receive Error Rate(%) 0 Client Bandwidth Rate(kbps) 0 Client Tx Packets 3535 Client Rx Packets 33 Client Tx Bytes 390507 Client Rx Bytes 5712 Client SNR 31

 

 

 

 

New Contributor
Posts: 4
Registered: ‎08-15-2013

Re: Client associated to Aruba but no ip address.

Hi Clembo,

 

Also, please see the logs below. The machine is associated but has no ip address. For now I still don't know how to resolve this issue.

 

(DC01-ALUWLC-L01) #show log user-debug all | include a4:17:31:92:55:3d
Aug 16 09:55:01 :501095: <NOTI> |stm| Assoc request @ 09:55:01.783923: a4:17:31:92:55:3d (SN 70): AP 172.25.3.87-d8:c7:c8:fa:73:43-W6-L5-AP10
Aug 16 09:55:01 :501065: <DBUG> |stm| sibyte_find_sta_vlan:5206 MAC - a4:17:31:92:55:3d, VLAN - 278
Aug 16 09:55:01 :501100: <NOTI> |stm| Assoc success @ 09:55:01.809391: a4:17:31:92:55:3d: AP 172.25.3.87-d8:c7:c8:fa:73:43-W6-L5-AP10
Aug 16 09:55:01 :501065: <DBUG> |stm| Sending STA a4:17:31:92:55:3d message to Auth and Mobility Unicast Encr Open Multicast Encr Open VLAN 0x27a, wmm:1, rsn_cap:0
Aug 16 09:55:01 :500511: <DBUG> |mobileip| Station a4:17:31:92:55:3d, 0.0.0.0: Received association on ESSID: RP-Wireless Mobility service Off, HA Discovery on Association ON, Fastroaming Disabled, AP: Name W6-L5-AP10 Group General-DC1-LC01 BSSID d8:c7:c8:fa:73:43, phy g, VLAN 634
Aug 16 09:55:01 :522035: <INFO> |authmgr| MAC=a4:17:31:92:55:3d Station UP: BSSID=d8:c7:c8:fa:73:43 ESSID=RP-Wireless VLAN=634 AP-name=W6-L5-AP10
Aug 16 09:55:01 :500010: <NOTI> |mobileip| Station a4:17:31:92:55:3d, 0.0.0.0: Mobility trail, on switch 172.25.0.6, VLAN 634, AP W6-L5-AP10, RP-Wireless/d8:c7:c8:fa:73:43/g
Aug 16 09:55:01 :522004: <DBUG> |authmgr| MAC=a4:17:31:92:55:3d ingress 0x1a46 (tunnel 2502), u_encr 1, m_encr 1, slotport 0xfc1 , type: local, FW mode: 0, AP IP: 0.0.0.0
Aug 16 09:55:01 :522004: <DBUG> |authmgr| MAC=a4:17:31:92:55:3d def_vlan 634 derive vlan: 0 auth_type 0 auth_subtype 0

 

Thanks a lot,

Avila

MVP
Posts: 226
Registered: ‎03-03-2011

Re: Client associated to Aruba but no ip address.

Have you checked that a DHCP server exists in VLAN 634 or there is an 'ip helper' defined on that VLAN pointing at the appropriate DHCP server?

If DHCP is running on the Aruba controller, does the controller have an IP interface in VLAN634?

Is the DHCP range full?

David
ACDX #98 | ACMP | ACCP
New Contributor
Posts: 4
Registered: ‎08-15-2013

Re: Client associated to Aruba but no ip address.

[ Edited ]

Hi David,

 

thanks for your response. Definitely I have that in mind already but quite not be an issue. I have a class B subnet on that VLAN. It should be sufficient for the entire campus. ip helper should also be not an issue otherwise the entire campus will not be able to connect to our wireless network. We have almost 20,000 users; this issue only affects a random of  6 machines. I still dont have any resolution for this issue, i did something on the registry, un-installed the driver and rebooted and let it install itself, upgraded to the latest driver and even reformatted the machine but still cannot get an ip address. it is connected but it doesnt have an ip address. You can check it with the logs I posted earlier.

 

Anyone from you guys experiencing the same issue?

 

Thanks a lot,

Avil

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