How to check eth up or down

IamDaniel · 07-05-2005, 08:35 PM

How do you guys check your eth* networks up or down...

ifup is distro specific, I believe...

Does any one have a clone / shell script to do the tricks?

juanbobo · 07-05-2005, 08:36 PM

ifconfig should tell you.

IamDaniel · 07-05-2005, 08:51 PM

Thanks...I never used the ifup...

so, does it the same as ifconfig?

I am writing some script and need to check the eth/network status, so it need to be more specific query...

My /sbin/ifconfig:

Code:

eth0      Link encap:Ethernet  HWaddr <snipped>  
          inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5972 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6380 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:5070843 (4.8 Mb)  TX bytes:1123987 (1.0 Mb)
          Interrupt:11 

eth1      Link encap:UNSPEC  HWaddr <snipped>
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 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)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:99 errors:0 dropped:0 overruns:0 frame:0
          TX packets:99 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:8321 (8.1 Kb)  TX bytes:8321 (8.1 Kb)

juanbobo · 07-05-2005, 09:17 PM

You could just run ifconfig | grep eth0 and if it returns something then eth0 is up.

IamDaniel · 07-06-2005, 07:18 PM

strange...

I get results even not networked...here's the output of both in `diff' format:

Code:

shell$ diff ifconfig.down.log ifconfig.up.log |less

3,5c3,5
<           UP BROADCAST MULTICAST  MTU:1500  Metric:1
<           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
<           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
---
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:1248 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1288 errors:0 dropped:0 overruns:0 carrier:0
7c7
<           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
---
>           RX bytes:965604 (942.9 Kb)  TX bytes:233045 (227.5 Kb)
20,21c20,21
<           RX packets:8 errors:0 dropped:0 overruns:0 frame:0
<           TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
---
>           RX packets:28 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
23c23
<           RX bytes:744 (744.0 b)  TX bytes:744 (744.0 b)
---
>           RX bytes:2426 (2.3 Kb)  TX bytes:2426 (2.3 Kb)

eeades · 07-07-2005, 08:34 AM

try mii-tool, it should work for what you are doing

Eric

maginotjr · 07-07-2005, 10:39 AM

Quote:

Originally posted by IamDaniel
Thanks...I never used the ifup...

so, does it the same as ifconfig?

I never heard about it. Just the usefull ifconfig.

IamDaniel · 07-07-2005, 08:25 PM

Quote:

Originally posted by eeades
try mii-tool, it should work for what you are doing

Eric

thanks, for the point out, I'm gonna try it later...if it works, otherwise I'll be back.