Quote:
Originally Posted by mithrandir
Gary, 1492 is indeed the magic number in ADSL, leaving room for LLC/SNAP headers. Cable and wireless might be different, but similar rules probably apply to their headers.
You will not see fragmentation with a sniffer unless your IP stack sets the "don't frag" bit. The router will silently do the fragging itself.
Unfortunately Windows makes this hard to set by being a registry entry. See Article ID: 900926 but rather than 576 they are discussing use 1492.
If it seems to make no difference you can keep reducing the MTU insteps of 4 and rebooting after each trial, but the next magic number is probably 1456.
Andrew |
I had a lot of trouble in the old days with unwired packets and found that dropping the MTU down to 1492 did wonders for the throughput.
I found a program that did this for me without any bother. Its called TCPOptimizer.exe. It lets you manipulate all sorts of features.
Barry