Wireless Access

Reply
New Contributor

RAP upstream speed problem with cellular modem

Hi,

I have tested rap ap with 4G cellular modem uplink and maximum speed I have received for uptream has been 4Mbps. Downstream speed has rolled around 20-30Mbps. I tested my cellular modem without Aruba ap and then I get 30Mbps for downtream and 25Mbps for uptream so the proplem is not in my cellular modem connection. I have done test with cat-cabel and via wifi, results are same. I did test with different ap models rap-155 and rap-109, results were same kind with both models. Only difference was that with rap-109 I received 20Mbps downstream and with rap-155 downstream speed were 30Mbps. This upstream speed problem occurs only with cellular modems, my other rap-ap:s works fine.

Has anyone run into same proplem? Is it feature or some limitation in ipsec tunnel? Latency in cellular connection is around 40ms, could it effect to this? But if so why downstream speed is good...
Regular Contributor II

Re: RAP upstream speed problem with cellular modem

Hi,

 

May be a limitation by your cellelular operator about IPsec stream ?

ACMP 6.4 / ACMX #107 / ACCP 6.5
New Contributor

Re: RAP upstream speed problem with cellular modem

Hi and thanks for reply. 

 

I asked this from cellular operator and they dont have limitations for ipsec traffic. I was thinking could this be udp window size problem?

Regular Contributor II

Re: RAP upstream speed problem with cellular modem

May be

 

Do you have try to capture traffic ?

ACMP 6.4 / ACMX #107 / ACCP 6.5

Re: RAP upstream speed problem with cellular modem

What USB settings were used when provisioning the AP?

=======================================
If a reply adequately addresses your issue, please click on the "Accept as Solution" and "Give Kudos" button so this information can benefit other users.
New Contributor

Re: RAP upstream speed problem with cellular modem

Hi,

here's current usb config from my test-rap.

 

USB User Name xxxxx
USB Password xxxxx
USB Device Type option
USB Device Identifier 0x19d21428
USB Dial String ATD*99#
USB Initialization String AT+cgcont=1,\"ip\",\"internet\"
USB TTY device data path ttyUSB1
USB TTY device control path N/A
USB modeswitch parameters N/A
Uplink VLAN 0
Remote AP Yes
Link Priority Ethernet 110
Link Priority Cellular 90
Cellular modem network preference auto
USB power mode enable

Search Airheads
cancel
Showing results for 
Search instead for 
Did you mean: