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Old 01-23-2010, 10:02 PM
Umarzuki Mochlis
 
Default eth0 is up eventhough the interface is not used

# ifconfig*eth0 * * *Link encap:Ethernet *HWaddr 00:1e:ec:b1:5a:76 *** * * * *UP BROADCAST MULTICAST *MTU:1500 *Metric:1** * * * *RX packets:0 errors:0 dropped:873412038 overruns:0 frame:0
** * * * *TX packets:0 errors:0 dropped:0 overruns:0 carrier:0** * * * *collisions:0 txqueuelen:1000*** * * * *RX bytes:0 (0.0 B) *TX bytes:0 (0.0 B)** * * * *Interrupt:219 Base address:0xe000

# ethtool eth0Settings for eth0: Supported ports: [ TP ] Supported link modes: * 10baseT/Half 10baseT/Full*
* * * * * * * * * * * *100baseT/Half 100baseT/Full* * * * * * * * * * * * *1000baseT/Full*
Supports auto-negotiation: Yes Advertised link modes: *10baseT/Half 10baseT/Full*
* * * * * * * * * * * *100baseT/Half 100baseT/Full* * * * * * * * * * * * *1000baseT/Full*
Advertised auto-negotiation: Yes Speed: Unknown! (0) Duplex: Half
Port: Twisted Pair PHYAD: 0 Transceiver: internal
Auto-negotiation: on Supports Wake-on: pumbg Wake-on: g
Current message level: 0x00000033 (51) Link detected: no
is there any application that could cause this situation to happen?

--
Regards,

Umarzuki Mochlis
http://debmal.my
 
Old 01-24-2010, 12:35 AM
Mark Kamichoff
 
Default eth0 is up eventhough the interface is not used

On Sun, Jan 24, 2010 at 07:02:24AM +0800, Umarzuki Mochlis wrote:
> # ifconfig
> eth0 Link encap:Ethernet HWaddr 00:1e:ec:b1:5a:76
> UP BROADCAST MULTICAST MTU:1500 Metric:1

The "UP" flag listed is just the admin status. However, it's missing
the "RUNNING" flag, which will indicate that there is link and the
interface is operationally up.

> is there any application that could cause this situation to happen?

Sure. Run "ifconfig eth0 up" but don't plug anything into the NIC.

- Mark

--
Mark Kamichoff
prox@prolixium.com
http://www.prolixium.com/


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