Aruba Instant & Cloud Wi-Fi

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Occasional Contributor II
Posts: 13
Registered: ‎04-19-2016

Roaming and connection problems with Motorola/Symbol Scanners (MC3xxx)

I trying to replace a standalone wireless network (mixed vendors, most of them is SOHO device) to Aruba Instant. The smartphones, tablets, laptops works fine, if I walk around the warehouse (0 ping packet loss during roaming, rarely 1 max), but the HandScans works very poor (maybe works better with the standalone SOHO network, and it's sad)

Now I tried to modelling the network (separated, no other devices, but the gateway), now testing with 3 piece of IAP-103's in my office (evenly distributed over a long corridor). The problem still exist, many packet lost during roaming, but my laptop/smartfone works fine, 0 packet loss.
IAP-103's running the most recent gen.av. FW: 6.4.2.6-4.1.1.13_54918

My test: connect to AP1, and walk around AP1-->AP2-->AP3. Some packet lost during roaming (about 30-35), and when I arrived near AP3, it's stabilized. After then I tried to walk back (AP3-->AP2-->AP1) at the same way, but that was disastrous. After left from AP3's range the connection was dropped, and recovered after 2-3 (!) minutes, this result about 250 ping packet loss. But it is particularly worrying that finally the HandScan placed directly next to the AP1 and the connection didn't recovered immediately, but only after about 1 minute.

I tried to change lower the power values, but nothing seems to change.

I tried it on our company guest network (Cisco WLC2504, AIR-CAP1602I-E APs), and the HandScanner works fine (maximum 1, but usually 0 ping packet drop during roaming), so I think so the Instant network is needed to configured, it's not the HandScans fault.

Used HandScanners:
Motorola MC3090
Motorola MC3190
Symbol (Motorola) MC3200

Thanks!

Guru Elite
Posts: 20,807
Registered: ‎03-29-2007

Re: Roaming and connection problems with Motorola/Symbol Scanners (MC3xxx)

What is the transmit power of your access points on the production floor?

Do you have broadcast filtering enabled on that SSID?  

How far apart and how up are the access points mounted?

 



Colin Joseph
Aruba Customer Engineering

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

Occasional Contributor II
Posts: 13
Registered: ‎04-19-2016

Re: Roaming and connection problems with Motorola/Symbol Scanners (MC3xxx)

I moved to band A, scanners was set to use only 5G, I changed the transmit power min/max values and the modulation rates for that wlan profile, now it's much better, only 2 ping packet drops during roaming.

 

This experiences with the modelled network in my office, tomorrow I will try these settings on the production network at our customer site. That was a warehouse, and the APs mounted horizontaly approximately 5-6 meters high.

 

The broadcast filtering is a good idea, I will try it also tomorrow.

 

Should I consider any other settings for the RF, to get it better?

 

Thanks!

Guru Elite
Posts: 20,807
Registered: ‎03-29-2007

Re: Roaming and connection problems with Motorola/Symbol Scanners (MC3xxx)

Two ping drops is desirable and about average.  You could have interference on the 2.4ghz band.  If you use 5ghz it is preferable.



Colin Joseph
Aruba Customer Engineering

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

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