In my configuration report of my HP 4000m Procurve switch there lists a
section for Spanning Tree Operation, then a listing of ports and a
priority number.  I just barely understand this end of IT, but realize
a lower number represents higher priority.  However, if my config

I'm hoping someone can give me some suggestions on how to solve a
problem we're having here at work.
I have two desktop computers (I'll call them A and B).
1. Both A and B are connected to the company LAN via 10BaseT ethernet

  I have been asked to study about SMSC ethernet controller.
I am going through the data sheet and am not understanding anything.
So, I wanted to know what is a ethernet controller and how does it work
to start with.

We have an embedded system, that has a SMSC 91C111 Ethernet Chip, ARM
Processor, and Windows CE 3.0.  Our system works great when not exposed to a
"Corporate Ethernet" environment.  When we put our system on a DSL line, it
works great.  We get massive buffer overflows on a typical ...

I have a Gigabit card in a compaq server that is set to auto (negotiation
), Its connected to a port that is set to 100M Full Duplex, and yes I
realise that this is not a good idea.  
The Gigabit card connects at 100M full duplex.

I'm running a system based on Linux 2.4.31 with three Intel 82450EM
gigabit Ethernet ports. In trying to diagnose a througput problem, I'm
using ethtool to look at the controller registers, but I'm not sure how
to interpret the values of RDH and RDT (receive descriptor head/tail).

I'm not 100% sure whether this is an Exchange issue, or something on our
network, but either way it is very strange...
I have a 3com powered network, 4x 4200's, and a 4400 which is the
central one. I've disabled Broadcast Storm Control (which I thought

Folks,
I've got a question concerning media converters and autonegotiation.
Consider the  following diagram (a fixed width font will help):
-----------   tp   ------     fiber      ------  tp     ------------

I'd like to write a small connectivity utility which will
_craft_ then _pack_ and _send_ an ethernet frame.
First:  Im using MSWin32
Second: Is there already a utility for sending a Layer 2 'ping'

I design the Ethernet device that will be used mainly in PoE networks.
But I want to insert the addition power entry from external power
supplier to provide a possibility to use the same device in not-PoE
network. Is it possible to do? Will the PoE powered device compatible

I manage a small network (75 desktops, 4 servers) with a single HP
Procurve 4000m switch which has one 1-port gigabit module and the other
7 modules having ten 10/100 ports.  I've got two HP Proliant DL servers
with dual gigabit NICS.  Obvioulsy, with only one gigabit port, I can

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I got a couple of sets of the Linksys WAPPOE12 Power-Over-Ethernet
boxes for putting WiFi APs in distant places without needing AC power
nearby, and checked very carefully to ensure that they were 802.3af
PoE, as I didn't want one of the non-compliant PoE kludges, so I could

Is it allowed to have a multicast MAC address linked to a unicast IP
address? If not what standard specifies this?
I know that this mechanism is used for clustering but that certain vendors
do not like it very much. I am interested in knowing what the rules are

I'm trying to mark a paper that deals with networks and I'm trying to
establish whether a question is correct.
The question offers a diagram of a network topology bringing together
ethernet (star and bus) and token rings (includes a printer). A number