network woes with laptop and pc card ethernet
jvian10 at charter.net
Tue Sep 28 15:10:27 UTC 2004
On Tue, 2004-09-28 at 00:37, William Anderson wrote:
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> Hi Jeff,
> I have been running FC2 with a wireless LAN card and encountered similar
> trouble changing LANS before I figured out how the network profile
> system works.
not using profiles, only one network config and that is a wired network.
> Are you using a static IP address or are you using DHCP? Are you trying
> to use both cards at the same time or one at a time? Are you able to
> ping the laptop's IP address from another computer on the LAN?
static IP, never more than one card, no communication either way.
> Is the link light on the LAN card is also lighting up?
> The first thing that I would check, if the routing table is OK when
> unable to connect, is the net mask. If it is wrong, you may not actually
> be on the same IP network that the other computers are on even though
> you are connected to the same physical network wiring.
verified everything repeatedly, and sometimes it works but more often
When it does connect it works for a short time then loses the
communication although the link lights, and ifconfig show it is still
> You might also try a different patch cable to connect the laptop to the
> network port or switch. A defective cable can cause trouble.
tried the cable, as well as different ports on the switch.
> Hopefully, this helps.
As I said, everything was working perfectly with RH9. Now it is
intermittent at best (mostly not working).
> Jeff Vian wrote:
> | I am having problems with networking on my laptop.
> | FC2 on a Dell Inspiron 5000 with PC card ethernet.
> | I have 2 different ethernet cards and the symptoms are the same with
> | both.
> | 3C562B/3C563B dual network/modem card
> | 3C589D 10base2/10baseT card.
> | On both the choice of network media depends on the dongle attached
> | (10baseT or 10base2)
> | I had no problems with the network interface when running redhat 9.
> | With FC2 it sees the device and loads the 3c589_cs module (I do not
> | remember which module was used with RH9) and properly configures it. I
> | am able to start the network. It links to my switch as 10Mbit full
> | duplex as indicated on the switch leds.
> | Here is the weird part.
> | Sometimes (intermittently) I am able to get out to other machines and
> | other times I cannot. When I do successfully connect it usually after
> | some period just stops communicating.
> | I thought possibly it was an issue with speed/duplexing so I tried
> | mii-tool to see what the parameters of the adapter were, but it tells me
> | there are no mii interfaces available. In fact the error message with
> | mii-tool is
> | "SIOCGMIIPHY on 'eth0' failed: Operation not supported
> | no MII interfaces found"
> | "route -n" properly shows me the routing, both network and default.
> |>From the laptop, ping to the adapter address works, ping to the default
> | gateway does not.
> |>From the other devices on my network everything works except pings to
> | the laptop address.
> | I am certain it is a "failure to communicate" between the pc card and
> | the switch, but I am at a loss on how to proceed.
> | My options seem to be:
> | 1. get this (these) adapter(s) to work reliably (preferred) or
> | 2. get a new adapter.
> | Does anyone have suggestions on how to identify/fix the problem since
> | mii-tool will not work for me?
> | TIA
> | Jeff
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