FortiGate 1000F Slow speed internet over wifi

[Mjawadi]

Hello ,

I'm facing issue with Wifi connection , Internet is very good when using wired connection . But Over Wifi internet speed is very slow . 

[Muhammad_Haiqal]

Hi @Mjawadi ,

Is this issue only happned to wifi user? 
Is the LAN and Wifi user sit in the same subnet?

You may do below troubleshooting:
1 PC connect to Wifi and do speedtest. 
Then directly connect this PC to Switch. If the speedtest good?

If this issue only happend to wifi user, i would suggest to check issue on the AP.

[Mjawadi]

Hi Muhammad ,

Please found bellow the answers :

Is this issue only happned to wifi user?  Yes 
Is the LAN and Wifi user sit in the same subnet? No

You may do below troubleshooting:
1 PC connect to Wifi and do speedtest. 
Then directly connect this PC to Switch. If the speedtest good? I already test Speed when connecting to Wifi , known that WAN speed is 200M , result of speed test over wifi is < 10M 

If this issue only happend to wifi user, i would suggest to check issue on the AP.

[Muhammad_Haiqal]

Hi @Mjawadi ,
Thank you for the respond.
Lets assume your Wifi VLAN is VLAN30.
Can you connect PC to VLAN30 on the switch?

Lets compare VLAN30 between LAN and Wifi. Is there any difference?
We need to rule out if this issue happend to this VLAN or to Wifi user only.

[Mjawadi]

Hello ,

COnnecting the PC to same WLAN subnet the result is good 

[Muhammad_Haiqal]

Hi @Mjawadi ,
Do you mean same VLAN.
Connect to Switch - ok
Connect to AP - NOT ok?

Means its not VLAN(fortigate) issue. I would suggest to check on the AP .
You already have the finding there :)

[Mjawadi]

Hello , yes connecting PC to WLAN VLAN the internet speed is very good , but connecting to internet through AP speed very slow 

[Muhammad_Haiqal]

Hi @Mjawadi ,

Yes, anyone connect to the AP having slowness issue.
I feel the issue is on the AP now. You have done a great finding there.

If you are using FortiAP, then you may create a ticket so we can check further on that.

[Mjawadi]

Hello ,

Unfortinally that AP's Are out of warranty now , and the issue that i tested the 8 AP's and always the same problem