Wireless Access

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New Contributor

Connectivity issues behind a wireless client

Hi,

 

I have some issues in a costumer that it is working with a client-wireless TP-Link TL-WA801ND. They have 3 servers behind this device.

 

They worked with IAP-93 and it seems they worked so fine.

Now we've installed a controller and convert the IAP to Campus AP and they experiment some issues (strange issues).

 

The main problem is that servers behind TP-Link don't reach the wired LAN on this VLAN. For example, I don't get response from this servers to the IP address of WLAN in this interface.

But when I do ping from wired network to servers, sometimes work but with high loss.

 

In WLAN user-table I see 3 TP-Link MAC address with the IP address of servers.

 

I disabled "IP spoofing" on firewall and "Suprressed ARP" on interface and it seems it worked better. I can do ping from servers behind TP-Link but it works in bursts and with high loss.

 

do you have any experience with clients behind this type of devices?

 

Thanks,

 

Guru Elite

Re: Connectivity issues behind a wireless client

You might want to try disabling "Broadcast Filter ARP" in the Virtual AP for this to work:  http://www.arubanetworks.com/techdocs/ArubaOS_63_Web_Help/Web_Help_Index.htm#ArubaFrameStyles/1CommandList/wlan_virtual_ap.htm

 

"Beginning with ArubaOS 6.1.3.2, the broadcast-filter arp parameter is enabled by default. Behaviors associated with these settings are enabled upon upgrade toArubaOS 6.1.3.2. If your controller supports clients behind a wireless bridge or virtual clients on VMware devices, you must disable the broadcast-filter arp setting to allow those clients to obtain an IP address. In previous releases of ArubaOS, the virtual AP profile included two unique broadcast filter parameters; the broadcast-filter all parameter, which filtered out all broadcast and multicast traffic in the air except DHCP response frames (these were converted to unicast frames and sent to the corresponding client) and the broadcast-filter arp parameter, which converted broadcast ARP requests to unicast messages sent directly to the client.

Starting with ArubaOS 6.1.3.2, the broadcast-filter arp setting includes the additional functionality of broadcast-filter all parameter, where DHCP response frames are sent as unicast to the corresponding client. This can impact DHCP discover/requested packets for clients behind a wireless bridge and virtual clients on VMware devices. Disable the broadcast-filter arp setting using the wlan virtual-ap <profile> no broadcast-filter arp command to resolve this issue and allow clients behind a wireless bridge or VMware devices to receive an IP address."



Colin Joseph
Aruba Customer Engineering

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New Contributor

Re: Connectivity issues behind a wireless client

Thanks cjoseph,

 

I tested too disabling broadcast arp but I didn't notice that PCs worked better.

 

I'm working on release 6.3.1.3, I have this parameters configured:

 

Virtual AP profile "xxxxxxx"
----------------------------
Parameter Value
--------- -----
AAA Profile AAAxxxxxxx
802.11K Profile default
Hotspot 2.0 Profile default
SSID Profile ssid_xxxxxx
Virtual AP enable Enabled
VLAN 312
Forward mode tunnel
Allowed band all
Band Steering Disabled
Steering Mode prefer-5ghz
Dynamic Multicast Optimization (DMO) Disabled
Dynamic Multicast Optimization (DMO) Threshold 6
Drop Broadcast and Multicast Disabled
Convert Broadcast ARP requests to unicast Disabled
Authentication Failure Blacklist Time 3600 sec
Blacklist Time 3600 sec
Deny inter user traffic Disabled
Deny time range N/A
DoS Prevention Disabled
HA Discovery on-association Enabled
Mobile IP Enabled
Preserve Client VLAN Disabled
QinQ Outer VLAN 0
Remote-AP Operation standard
Station Blacklisting Disabled
Strict Compliance Disabled
VLAN Mobility Disabled
FDB Update on Assoc Disabled
WMM Traffic Management Profile N/A

 

May be other combination with ARP?

 

 

Thanks,

Guru Elite

Re: Connectivity issues behind a wireless client

I would turn "Broadcast Filter ARP" and "Broadcast Filter ALL" both back to enabled.



Colin Joseph
Aruba Customer Engineering

Looking for an Answer? Search the Community Knowledge Base Here: Community Knowledge Base

New Contributor

Re: Connectivity issues behind a wireless client

Thanks,

I'll check it tomorrow morning. I'll go to the remote office.


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New Contributor

Re: Connectivity issues behind a wireless client

Sorry,

 

I couldn't update before.

 

It seems that the configuration I put before is good. The better configuration is:

 

Drop Broadcast and Multicast Disabled
Convert Broadcast ARP requests to unicast Disabled

 

The last day I tried some configurations so fast and I didn't notice that the problem was solved.

 

Thanks a lot for your help,

 

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