[Info-vax] hub better than switch?!

[Phillip Helbig---undress to reply]

In article
<b54c5498-3ecb-4e2c-bc2b-a8ab1d1501c2 at fk28g2000vbb.googlegroups.com>,
John Wallace <johnwallace4 at yahoo.co.uk> writes: 

> Do you know *when* the errors are occuring? Ie regularly or randomly?
> (At two a day it's hard to tell either way?)

Randomly.

> Is there any way you can (temporarily?) acquire a proper managed
> switch with a port-mirroring capability?

Not worth the trouble as long as the problem isn't that severe.

> On the other hand: assuming there are no basic configuration errors
> such as mismatched duplexness (*please* recheck this, as already
> suggested by others), my guess, based on nothing more than your
> description and my intuition, is that one or more PEA0/SCS packets
> sent at 100Mbit is being dropped occasionally by the switch, not
> because of address table overflow described above, but because of
> occasional port buffer overflow (too much 100Mbit traffic being sent
> to 10Mbit ports, filling some buffer in the switch for some reason).

Sounds like a good guess.

> You do realise that an occasional PEA0 error isn't necessarily serious
> cause for concern, right?

Right.  As long as it doesn't get worse.