I bought a brand new BT Business hub 6, it's been working fine, I'm on ADSL and it's mtu is 1492. I tried setting it to 1472 but it won't change, even disconnected and saw mtu go to 0, so set it to 1472 and reconnected and the sob reset to 1492.
There are two values; MTU and MSS. MTU is the Maximum Transmission Unit. MSS is the Maximum Segment Size . MSS is always at least 40 less than MTU, so if your MTU is 1452 your MSS must be 1412 or less. This is important. The ideal (and maximum) MTU value for Infinity is 1492, therefore the MSS value should be set to 1452 or less. and on Windows for best performance when on a BT Broadband service? Note: It's not a BT Router i'm using, i'm using a Netgear DG834N. I am sure BT Routers like the HomeHub have a MTU Size of 1500 set in the Router Interface, am I correct? My Netgear DG834N has a MTU Size of 1458 in the Router Interface by default. Thanks for responding. I bought a brand new BT Business hub 6, it's been working fine, I'm on ADSL and it's mtu is 1492. I tried setting it to 1472 but it won't change, even disconnected and saw mtu go to 0, so set it to 1472 and reconnected and the sob reset to 1492. How can I get this darn thing to stay at the mtu I There is somewhere a page which gives the default MTU settings and I am 99.99% sure 1500 is correct - I queried why my BT router on Infinity (VDSL2) kept switching to 1492 and it was confirmed that Infinity needs 1492 whereas for ADSL 1500 shoud be used. 0 Optimising WAN MTU for BT Infinity Published 17 th December 2017 by Jon Scaife & filed under Web Technologies . Since switching from my BT SmartHub to a pfsense router I’ve had a few minor teething problems. The BT FTTC service uses PPPoE as its mode of connection via the VDSL modem. Although the default Ethernet MTU is 1500, when using PPPoE, 8 bytes are used for the PPPoE header, this then reduces the MTU to 1492. In computer networking, the maximum transmission unit (MTU) is the size of the largest protocol data unit (PDU) that can be communicated in a single network layer transaction. The MTU relates to, but is not identical to the maximum frame size that can be transported on the data link layer , e.g. Ethernet frame .
BT Business Smart Hub | BT Business
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2 days ago · The BT Business Smart Hub uses BT Smart Scan technology to monitor your connection and make sure you rely on the most efficient signal. And we’ve built in future-proofing ready for when new devices are wi-fi enabled and internet speeds get even quicker. So the hub’s already prepared to work smarter and faster
Aug 18, 2018 · The router could have been deliberately set to a lower MTU by the owner for reasons of their own. The router could be fine and BT could have messed up (see below) Having a lower MTU is not necessarily a problem - as we said, either way the data gets through. But as soon as you don't have the standard 1,500 byte MTU you can run in to issues. Online MTU test allows you to test the maximum MTU size from our host to your destination. To check your MTU, simply provide your IP or DNS hostname. We will test the PMTU (Path Maximum Transfer Unit) aka maximum MTU size (unfragmented) between our host and your destination, most likely the outside of your router or firewall. More info: Wikipedia Aug 25, 2016 · The BT Home Hub 5 was one of the fastest ISP-supplied routers around when it was first introduced. It's been overtaken in the performance stakes by the new BT Smart Hub, which is much faster, more The point here is that BT Infinity only supports an MTU of 1492 - if you conifgure a larger one then you will get issues. What licensing software is causing the issue. You need to ensure you have that end to end - so it is no good if the server sending the info is sending 1500 as the inifinity router will break the packet up. The Maximum Transmission Unit (MTU) is the largest possible frame size of a communications Protocol Data Unit (PDU) on an OSI Model Layer 2 data network. The size is governed based on the physical