see notes below
green bean wrote:
Our head of IT [who never even heard of m0n0wall or pfSense, hes a
Windoze-only person]
says that:
we have a standard D-Link wireless router. one of the ports is marked
WAN, the rest are LAN.
he says you cannot use the WAN port as an uplink because its feed from
other switches upstream,
instead of directly off our [satellite] modem.
True?
Yes, I imagine he is doing NAT for you, and plugging in a LAN switch
into the WAN side of your Dlink will (if default config) to double NAT
the connection
Internet IP [router] Private IP [router] Private IP
He says we should use it as a switch, only using the LAN ports,
putting the feed from upstream switches into one of those LAN ports.
Does this make sense?
Yep. Those devices are essentially a switch + router... you can just
use the switch ports and turn off DHCP on the dlink and youve got a dumb
switch.
In switches and hubs, all ports are numbered, none of them marked
"uplink."
He says if port 1 is used as an uplink, the port next to it should be
kept vacant,
because it wont work.
True?
Uh, he may be doing some assumptions. That may have been true with a
specific model. He may have been giving you information on the
assumption to make it work.
We have a 24 port switch [other switches are upstream] which i plugged
my laptop into.
I cant get a regular [192.168 etc] IP, windoze gives me a useless
169.etc IP and says limited or no connectivity of course.
I tried ipconfig/release and ipconfig/renew but that didnt help.
Sounds like no DHCP available.
So I move downstream to a D-Link wireless router with one of its LAN
ports connected to the 24 port switch.
Its WAN port is kept vacant for the "reason" discussed above.
I plug into another of its LAN ports and I get a regular 192.168.etc IP.
Thats the Dlink providing you a DHCP, and that same DHCP service is
interfering with the rest of the network, I recommend you check with
your IT guy again.
This doesnt make sense because im downstream from the 24 port switch
which wouldnt give me a regular IP.
Im guessing the 24 port switch had no more IPs to give out even though
it had vacant ports.
Can this be true?
Potentially, but the switch usually does not provide a DHCP service,
another device usually does. It may have only 50 IPs to give out, or 24
IPs, but normally handing out IPs is not the switch's job. Usually a
windows domain controller, or gateway router's job.
-david on Lotus St. :)
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