network flapping

[Paul M]

Alastair Stevens wrote:
> Hmmm, take 2: don't think that was it, since I tried the fix but it 
> wasn't applicable to my hardware. Strangely though, the problem is worse 
> today, and the link is flapping *several times per minute* at the 
> moment. No wonder my upload/download speeds have seemed strangely slower 
> than normal.  I've tried turning off autoneg, but to no avail...


if you make one end fixed rate and duplex, the other end must also be 
too, otherwise an auto end will fall back to 10baseT hdx

better to keep it all auto/auto unless you like a challenge

not being funny, but I can't remember if you've swapped in a new cable. 
I've very occasionally have duff ethernet cables which have been 
sufficiently marginal that TCP works (telnet, ssh, web) because of auto 
retries but UDP is very unreliable!