On Mar 3, 2011, at 3:56 PM, AndyTheMac wrote:
> They all go into a Netgear 8 port
> gigabit router and then connect to the internet through a Netgear
> modem.
Is this actually a router or is it just a switch? Routers are generally
'smarter' devices, and if their configuration is screwed up, they can produce
things like what you see.
When you connect the devices, fire up terminal on each and run the command :
ifconfig -a
Look for en0 on most of the devices, and en1 for the other ethernet port on the
G5.
This is what mine looks like:
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:30:1b:46:2b:90
inet6 fe80::230:1bff:fe46:2b90%en0 prefixlen 64 scopeid 0x5
inet 192.168.1.3 netmask 0xffffff00 broadcast 192.168.1.255
media: autoselect (100baseTX <full-duplex,flow-control>)
status: active
The 'media' line is what you want to pay attention to. If the 'router' is
flaking out, it might be autoconfiguring the different systems differently,
like half-duplex (meaning it can only talk in one direction at once) or even
auto-negotiating down to 100baseTX from 1000BaseTX...the disparity in speeds
sure sounds like the difference between 1000mbit and 100mbit connection speeds.
Also there could be differences in the top line for the MTU, although that's
unlikely.
Also, in Network Utility in the Utilities folder look at the Transfer
Statistics for the interfaces (in the Info tab). You should generally see few,
if any errors. If you see a lot there's a problem somwhere in the system,
either the ethernet hardware on the system, the cable or the switch.
--
Bruce Johnson
"Wherever you go, there you are" B. Banzai, PhD
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