How do I manually set the MTU on a PPP Connection?
Those whom have followed previous threads learned that for whatever reason,
when I dial-up using pppd or wvdial, I have an MTU of 0 automatically
assigned. This caused all kinds of fun issues. What I have been doing is
manually changing it after I connect via
ifconfig ppp0 mtu 1500
This stands in the way of having my box be automated. I tried specifying the
ppp0 connection and the MTU in my /etc/network/interfaces file, but that did
not help. Apparently every time a connection is made, the MTU is reset.
I think that I need some post-execution script put on ether pppd or wvdial
to run the above ifconfig command. How do I do that?
Please keep in mind, this is my 7th day using Linux, so please list
instructions in verbose mode :)
A somewhat related question: What should I have my MTU set to? Based on what
I have read, 1500 is a bit too high for optimal performance. This is a
Verizon Wireless PPP over cellular connection. Verizon claims 100k/400k
Thanks in advance.
Technical Manager, Uptime Technical Solutions LLC.