Asus RT-BE88U MTU 1508

[PeterParker]

Hi guys,

I bought an Asus RT-BE88U, I really like this router, and I was wondering if the new BE routers from Asus can do MTU 1508 over PPPOE with baby jumbo frames? My ISP is Telus, but last mile carrier is Bell and they are using PPPOE with VLAN 40. So I was wondering if I could achieve that with the new routers. I had an RT-AX86U and I didn't support that.

Thanks a lot!

 

[degrub]

Bell Fibe (Canada) with Asus RT-AX88U Pro running firmware 3004.388.8_4 appears throttled

Hello to all: My Bell Fibe connection has been rock-solid on the Asus RT-AX88U Pro. I have a post on the same. Episodically, Bell seems to throttle my connection. Are you seeing this behaviour?

www.snbforums.com

 

[PeterParker]

Bell Fibe (Canada) with Asus RT-AX88U Pro running firmware 3004.388.8_4 appears throttled

Hello to all: My Bell Fibe connection has been rock-solid on the Asus RT-AX88U Pro. I have a post on the same. Episodically, Bell seems to throttle my connection. Are you seeing this behaviour?

www.snbforums.com

Thank you for the link, but my internet does not appears to be throttled. Also OP talks about the RT-AX88U, but I have the RT-BE88U.

 

[Tech9]

I was wondering if I could achieve that

What exactly is the expected benefit of such eventual achievement?

 

[Ripshod]

You could try 1508 as the setting is there but, along with fragmentation, what are you going to gain over 1492?

 

[degrub]

Thank you for the link, but my internet does not appears to be throttled. Also OP talks about the RT-AX88U, but I have the RT-BE88U.

Since his last mile carrier/implementation appeared to be the same, maybe read his other threads or contact him for insights.

 

[xwildx]

Hi,

I have a good news, i just tested the Asus RT-BE88U and I manually enabled baby jumbo frame and it is working.

I previously tested with the AX88U and the driver won't allowed any MTU higher than 1500 which is required for baby jumbo frame (we must set the wan to 1508).


Here the config that you need to manually set using SSH to enable baby jumbo frame on the Asus RT-BE88U

nvram set wan0_pppoe_mru=1500
nvram set wan0_pppoe_mtu=1500
nvram set wan1_pppoe_mru=1500
nvram set wan1_pppoe_mtu=1500
nvram set wan_pppoe_mru=1500
nvram set wan_pppoe_mtu=1500
nvram set wan_mtu=1508
nvram set wan0_mtu=1508

# Save the changes
nvram commit

# Reboot the router to apply changes
reboot

After that you are on using 1500 MTU on pppoe link

on Bell 3 gbps I get around 50 mbps more speed



Here is the config after restart :

@RMerlin do you think the range MTU, MRU and the WAN MTU range can be updated / changed to allow higher settings (Note that I only tested with BE88U other router probably doesnt work)


Best,

 

[xwildx]

Here is my final result, I can now ping without fragmentation with a packet size of 1472 (which is an MTU of 1500)

 

[Erah]

Hi,

I have a good news, i just tested the Asus RT-BE88U and I manually enabled baby jumbo frame and it is working.

I previously tested with the AX88U and the driver won't allowed any MTU higher than 1500 which is required for baby jumbo frame (we must set the wan to 1508).


Here the config that you need to manually set using SSH to enable baby jumbo frame on the Asus RT-BE88U

nvram set wan0_pppoe_mru=1500
nvram set wan0_pppoe_mtu=1500
nvram set wan1_pppoe_mru=1500
nvram set wan1_pppoe_mtu=1500
nvram set wan_pppoe_mru=1500
nvram set wan_pppoe_mtu=1500
nvram set wan_mtu=1508
nvram set wan0_mtu=1508

# Save the changes
nvram commit

# Reboot the router to apply changes
reboot

After that you are on using 1500 MTU on pppoe link

on Bell 3 gbps I get around 50 mbps more speed



Here is the config after restart :

View attachment 64112

@RMerlin do you think the range MTU, MRU and the WAN MTU range can be updated / changed to allow higher settings (Note that I only tested with BE88U other router probably doesnt work)


Best,

This works for me as well. Thank you!