Open an Elevated Command Prompt and run this command to view current MTU size of the available IPv4 sub-interfaces (Can also be done with IPv6):
To change the MTU size of sub-interface no. 1 (See "Idx" from above command):netsh interface ipv4 show interfaces
Related Registry settings to Configure MTU size.netsh interface ipv4 set subinterface interface=1 mtu=1500 store=persistent
The show interfaces line reveals that the loopback is set to a much higher number, should that be changed to 1500 as well?
i have make a change with a friend in the MTU but now we want to delete it and we dont know the command =/ can someone help ?
If you have more than one NICs and you want to see which subinterface is, you need to run:
netsh interface ipv4 show interfaces
The result will be like this:
Idx Met MTU State Name
--- --- ----- ----------- -------------------
1 50 4294967295 connected Loopback Pseudo-Interface 1
17 25 1500 connected Wireless Network Connection 1
19 25 1500 connected Wireless Network Connection 2
Hence, if you like to change MTU of "Wireless Netwrok Connection 1", you should run command:
netsh interface ipv4 set subinterface "17" mtu=1384 store=persistent
and so on for the other interfaces.
The loopback adapter can only communicate with the local machine hence the name. No need to change the MTU.
When looking in the ipv6 i find 6 other NICs but they are not given a index number. How do i change the MTU for these?
Dear All,
Could you help me for the below issue.
I've a VoIP device (SBC) that's connected to a L2 network then to a router.
The problem is that the Server interface is divided into several logical subinterfaces(the same for the router) & each interface has its own VLAN tag.
I dont have any administration right for both the router & the L2 network while I need to connect my vista PC instead of the SBC to troubleshoot a problem.
This means that I've to make my PC undersatand VLAN ID as the router is going to send the packets tagged to me.
Do you have any idea of how to make my PC aware of tagged packets?
In my case, when I type the netsh interface ipv4 set subinterface “11″ mtu=1384 store=persistent - 11 is in my case - I get an error: the following command was not found. What can I do ??
Regards.
The correct command would be:
netsh interface ipv4 set subinterface interface=11 mtu=1384 store=persistent
Then it should work fine
Michael's command works correctly for me. Many thanks.
when I tried to change the values it says that, the requested operation require elevation . what would I do now??
Hi! I have a problem: store=persistent dosn't work. After reboot, the MTU has return at the previous value.
Precision: with administrator shell.
Presision2: after close the shell and re-open it (without reboot!) my new MTU value is not recorded ! What's ...?