optimal multi-line load balancing?

David M. Ramsey (dmr@charweb.org)
Wed, 26 Jun 1996 12:29:09 -0400 (EDT)

I use Multi-Line load balancing between PM2 boxes, using two telephone
lines. It works pretty well, but throughput doesn't seem to be as good
as the 2 x 28.8k I had hoped for. What are some good ways to benchmark
throughput between these boxes?

I'd like to know how I can optimize the configuration for this, also.
On one pair that I'm using, both lines have been up for 6 days, and the
stats look like this:

Port Host Type Status Input Output Pend Overrun Parity Framing
S1 ptp2 Netwrk ESTABLISHED 556714 44169 0 0 0 0
S2 ptp2 Netwrk ESTABLISHED 4940641 2810946 0 0 0 0

Why does the second of the two ports for this link have so much more
traffic than the first port? This effectively limits me back to the
linespeed of a single connection, no?

What can I do to make this more efficient? Lower MTU? It is currently
set to 1500, is that perhaps my problem? What would be optimal? Are
there any other tweaks I could/should do?

Thanks for any help/hints/info/advice you can give.

David Ramsey Charlotte's Web Community Network
System Administrator http://www.charweb.org
dmr@charweb.org