What should MTU be on Nintendo Switch?

Should MTU be 1500 or 1492?

There are quite a few sites complaining that with a large amount of traffic their MTU sizes are being limited to 1492 bytes and that is unacceptable for various reasons.

One site stated: As the network moves towards 1000 Mb (1000 Megabyte) speeds then the default of MTU 1500 will likely be too small and will limit the throughput. Even for 1500 MTU traffic can quickly get congested.

The concern has been raised that the Internet Protocol version 6, which offers features such as MPLS (MultiProtocol Label Switching), more efficient packet switching and QoS (Quality Of Service) is going to cause the MTU sizes to grow. A report says: In the new IP, this becomes feasible as the protocol itself can easily make use of the higher-dimensional packets for data transmission. To avoid losing packets due to fragmented transmission, the standard specifies a fixed length packet at 1492 bytes. But how fast does it really need to travel? Can the protocol itself handle faster transmissions on a greater number of routes than was ever possible before? According to the research team at UCI, the answer is yes. It can do so because when moving around the Internet at an extremely high speed like 50,000 km/h a packet is actually much bigger than just one thousand bytes.

As far as I understand it, if everything goes perfectly well I believe that with the IP version 6 we can move to 1472 MTU and still get acceptable speeds. Unfortunately, there are still those who think that 1500 should be an absolute rule even if it gives us lower performance. But is it?

Speed.com ran through a couple of tests with MTU sizes of 1500 and 1492 - and found that you get almost identical performance between the two settings.

What does a 1500 MTU mean for you? According to Wikipedia a 1500 MTU means a 1536 byte frame would be dropped to give space for the Ethernet overhead, the frame payload, and the 802.11 header. The frame payload can take up any combination of the remaining 1492 bytes in the frame, but the Ethernet padding and MAC overhead (PHY Medium Access Control protocol) must be in the ethernet frame.

Is MTU 1400 or 1500?

I am planning to replace my existing car charger and have been wondering what the optimal MTU is for the new charger.

I am currently using a MTU 800 that will be used on my car but for now I will also use it to charge my laptop. The charger has an AC output with 2 ports and a USB output. I am very new to all of this so any help would be greatly appreciated!
It's quite likely that the original charger doesn't meet the standard.

Should I change my switch MTU to 1500?

I just wanted to add this question to the list, as I've recently had a problem with my ADSL modem (TekSpeed DSL200 modem). The problem is that it is reporting a 1500 MTU, and because of this, my internet speed is a mere 1.5 Mbps, which I think is incredibly slow.

I've tried reducing the MTU from 1500 down to 1400, and now the internet speed is 6 Mbps, which is a massive improvement. My question is, would this be a good idea? Should I switch my MTU to 1400 to see if that makes any difference? The first thing to check, in case you haven't already, is the MTU settings on your router (if it has them). You can check those easily with the 'show advanced' command. It will also display the IP address of the server(s) you are currently connected to. That's a very good start.

If the issue persists, you might be able to find your MTU settings on your modem. If not, you'll have to dig a bit deeper to find the source of the issue.

You might want to do some more digging, and check the following: Check the MTU on your ISP's modem. If they are using one, that will tell you what you are using. If not, check the manufacturer's website for possible firmware upgrades or other information.

If you are using a VDSL modem, check that you don't have any old unused ports installed, or that your VDSL is setup correctly. If you have a VDSL modem, it should auto-detect the ports, and assign them accordingly.

Some modems (especially the cheap ones) will have their MTU set to match the size of their maximum Ethernet port. Check if yours is set that way.

Another place to look at would be the router itself. Make sure that all ports are configured correctly, especially if the router has more than one port.

You may also want to take a look at the network interface configuration, and make sure that all the options are correctly configured. For example, you should be able to force the MTU setting (such as with the 'ip mtu-len 1492' command), or configure the interface with a static IP address instead of DHCP.