1. ppp download works great, ppp upload slowwwww
I have 2 boxes that are running ppp with slackware 3.1, kernel
2.0.29, pppd 2.2.0f, etc.
The first box (lets call him A) sits on a lan at work to route my
traffic from home onto the net.
The second box (B) is my router at home that routes a 4 bit subnet from
home to work.. I have
been having trouble getting similar transfer rates when pulling from A
to B, when compared to
pushing from B to A.
Pulling from A to B works great - anywhere from 2 to 3k/sec on
compressed files... no complaints
Pushing from B to A takes forever. It appears that B doesnt get an ack
from A for the first packet
for a long time (many 10s of seconds).
To narrow the problem, I had a friend connect to B using his linux box
that also acts as his home router.
He gets pretty similar results when he pushes and pulls. That rules out
box A from being at fault.
Next, I took the modem (SupraFax Modem 28.8 external) from box B and
hooked it up to a
Windoze95 box with that DialUpNetworking PPP stuff. I pushed and
pulled to an NT box... similar transfer rate
results for the push/pull.
This leaves the hardware or kernel config on box B.
I have setserial configuring /dev/cua0 to spd_vhi and 16550, etc... and
have the MRU set to 1500. I am not setting
an of the asyncmap stuff in the options for pppd. my options file likes
lcp-echo-interval 15 lcp-echo-failure 3 defaultroute
has anyone seen asymmetry in transfer rates before? could this be
related to the kernel ( 2.0.29?) I cant expect that
pppd is causing trouble because its been working great forever, and boxA
and the friends router are using
this (2.2.0f) as well.
any ideas would be very much appreciated.
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