Dave Heavy Industries Dave Heavy Industries – blog

TPG MTU & MSS for ADSL2+

Again, keep getting asked this one, TPG uses PPPoE which works a little differently in terms of MTU and MSS.

I found the best settings for me were
MTU 1492
MSS 1452

on a cisco router this is achieved by

interface Vlan1
ip tcp adjust-mss 1452
!
interface Dialer1
ip mtu 1492
!