Ethernet card does not work with FC2

[Bob Chiodini]

On Wed, 2004-07-21 at 10:37, Scot L. Harris wrote:
> On Wed, 2004-07-21 at 10:11, Alberto M R Davila wrote:
> > Hi Scott,
> > 
> > I am using the normal network cable (the blue one) to connect my card to
> > the local network... I just unplugged the cable/connector from a computer
> > connedt to internet (working properly of course) use it for my laptop and
> > cloned the accordingly the IP address and DNS, then nothing.. I am
> > attaching the log...
> > 
> > What a difficult task.
> > 
> > Thanks, Alberto
> 
> hmmm, still don't know what type of switch you are connecting to.  If
> you used the same IP address as another device that was on the network
> there could a couple of issues even if the other device is off the
> network.
> 
> The switches used at your location could be locked down.  Some switches
> allow you to specify what MAC address that port on the switch is allowed
> to talk to.  If that is the case you will need to get the network
> administrator to setup a port for you on the switch.
> 
> The other problem could be that the default gateway probably has the
> other machines MAC address in cache.  Until that times out or can be
> flushed your machine will not be able to talk to the gateway.  What
> happens is your system arps for the router and gets a reply.  You then
> try to send a packet to the MAC address supplied in the arp.  The router
> gets your packet and checks its arp cache for the MAC address assigned
> to that IP and sends the reply out to the wrong MAC address.
> 
> Again if that is the case you can get the network administrator to flush
> the arp cache or sometimes just try to ping your IP from the router. 
> After that it should work.
> 
> The other thing you can do is get a different IP address, one that has
> not been used yet on the network.
> 
> Also, you may still want to get a cross over cable and try that test I
> suggested.  That will tell you for sure if the interface is configured
> correctly.
> 
> Also, the other thing I mentioned last time was to verify that you do
> have link to the switch (should have an led on the switch to indicate
> that) and that you are set to the correct speed and duplex settings. 
> Those should be autonegotiated but I have seen that fail on Cisco
> switches and Sun servers.  You can use mii-tool to specify those
> settings if needed.
> 
> I am copying this back to  the list as this may provide some others with
> info that may point to a solution for you.
> 
> -- 
> Scot L. Harris
> webid at cfl.rr.com
> 
> It seems a little silly now, but this country was founded as a protest
> against taxation. 

If you can't ping from the router:  This will flush the old ARP cache
entry on some Cisco Routers.  I have not tried it on anything else:

	ping -q -c 1 -b -I $COMMONIP $NETWORK

Where $COMMONIP is the IP address of the interface to ping from and
$NETWORK is the network address of your subnet.

Bob...
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20040721/57043a22/attachment-0001.sig>