Computers & Electronics

MTU size with VDSL in bridge mode

  • Last Updated:
  • Dec 30th, 2020 5:33 pm
[OP]
Deal Addict
Sep 13, 2011
1037 posts
663 upvotes
Canada

MTU size with VDSL in bridge mode

Hi,

Does someone know how to do it ? I am unable to edit my SmartRG 505n configuration to lower the mtu size :(
8 replies
Deal Addict
Sep 16, 2013
2100 posts
1114 upvotes
SW ON
elgros4 wrote: Hi,

Does someone know how to do it ? I am unable to edit my SmartRG 505n configuration to lower the mtu size :(
If you are in bridge mode the MTU size is set in the router.
[OP]
Deal Addict
Sep 13, 2011
1037 posts
663 upvotes
Canada
alpovs wrote: If you are in bridge mode the MTU size is set in the router.
I don't use a router, I connect directly with windows pppoe, so the Mtu would be set in windows ?
Deal Addict
Sep 16, 2013
2100 posts
1114 upvotes
SW ON
elgros4 wrote: I don't use a router, I connect directly with windows pppoe, so the Mtu would be set in windows ?
Then, yes. MTU is applicable to the PPPoE protocol for the connection established by your Windows PC. The modem in bridge mode won't have anything to do with it. I don't know for sure but I guess Windows would use the proper MTU of 1492 because it is standard for PPPoE. You can test if you already have the correct MTU set by pinging:
https://kb.netgear.com/19863/Ping-Test- ... -on-Router
https://www.pcwdld.com/ping-mtu
[OP]
Deal Addict
Sep 13, 2011
1037 posts
663 upvotes
Canada
alpovs wrote: Then, yes. MTU is applicable to the PPPoE protocol for the connection established by your Windows PC. The modem in bridge mode won't have anything to do with it. I don't know for sure but I guess Windows would use the proper MTU of 1492 because it is standard for PPPoE. You can test if you already have the correct MTU set by pinging:
https://kb.netgear.com/19863/Ping-Test- ... -on-Router
https://www.pcwdld.com/ping-mtu
Thanks, I have solved my bug. I did a test with the modem directly with mtu 1492 and it work.

Then, I replug my router and change the default TP-link MTU of 1480 to 1492, and now my cisco anyconnect vpn from work is now super fast.



Thanks, 1492
Deal Addict
User avatar
Oct 19, 2007
1325 posts
319 upvotes
45.467253°N, 75.5123…
elgros4 wrote: I don't use a router, I connect directly with windows pppoe, so the Mtu would be set in windows ?
I strongly suggest not relying on Windows' firewall while directly connected to the open internet...
[OP]
Deal Addict
Sep 13, 2011
1037 posts
663 upvotes
Canada
wally_walrus wrote: Firewall is needed for way more then protection against viruses...
by virus, I meant any form of malware.

Top