anyone seeing jumbo frames on their _50 beta 2 RT-AC68u?

[RussellInCincinnati]

Having trouble seeing jumbo frames being used, when my Windows 10 client that is definitely set to jumbo frames, pings the router. Specifically if pinging the router from Win 10 with -l set to more than 1504 bytes or so, there is no response from the router.

Can see from netsh commands in Windows that the MTU size for the Intel network adapter is set to 9000.

From the linux prompt of the router all the mtu sizes show as non-jumbo. Of course have set the Switch Control RMerlin page to Jumbo Frames enabled.

Anyone successfully seeing jumbo frames between Win clients and an RT-AC68u running _50 beta 2?

 

[enr00ted]

This is one of the interesting questions which lack an explanation. I am no expert but came across the same "problem" recently. The conclusion is that you cannot test this with the router's ip. This is an All-in-one device that has a switch, a router, and acess point and maybe something else, all mixed together . The jumbo frames work at the switch level, but you cannot ping the switch part. Think of the 192.168.1.1 as another machine on your network that is connected to your pc by the internal switch, but that does not accept jumbo frames.

This does not mean you can't use jumbo frames, you can, between all the devices that are connected to your router "switch". So to test if they work you need another device on your network that support jumbo frames and ping between them. If you can't ping with the 9000 value, then lower it as there is a payload to be taken into consideration http://en.wikipedia.org/wiki/Jumbo_frame. Try 8972, 8960 etc

This is how I understand this, don't know if I'm 100% accurate

 

[RussellInCincinnati]

This is one of the interesting questions which lack an explanation. I am no expert but came across the same "problem" recently. The conclusion is that you cannot test this with the router's ip. This is an All-in-one device that has a switch, a router, and acess point and maybe something else, all mixed together . The jumbo frames work at the switch level, but you cannot ping the switch part. Think of the 192.168.1.1 as another machine on your network that is connected to your pc by the internal switch, but that does not accept jumbo frames.

This does not mean you can't use jumbo frames, you can, between all the devices that are connected to your router "switch". So to test if they work you need another device on your network that support jumbo frames and ping between them. If you can't ping with the 9000 value, then lower it as there is a payload to be taken into consideration http://en.wikipedia.org/wiki/Jumbo_frame. Try 8972, 8960 etc

This is how I understand this, don't know if I'm 100% accurate

This is a well written observation that is fun to consider as well as useful. Will see if can Jumbo frame ping between Win 8/10 machines, thanks much. By the way my standard test for jumbo frames is to ping 2000 bytes.

 

[enr00ted]

Yes, 2000 is the lowest value. It also depends on what you have set on your pc's adapters advance settings. Your router has an Auto option, wich adapts to whatever the size you ping with.