Re: IF-MIB::ifSpeed shows wrong value for bonded interface

On Fri, Aug 5, 2011 at 11:32 AM, Dheeraj Gautam <[email protected]> wrote:
>>
>>    What does ifconfig for your interface say?
>>
> Following the output of ifconfig on my system.
> 0=> bonded interface
> eth0 => physical interface
> eth1 => slave interface
>
> [admin@qa04 ~]# ifconfig 0
> 0         Link encap:Ethernet  HWaddr 00:13:CC:01:91:3B
>          inet addr:10.9.1.1  Bcast:10.9.1.255  Mask:255.255.255.0
>          UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
>          RX packets:699 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:14636 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:4096
>          RX bytes:85716 (83.7 KiB)  TX bytes:1814876 (1.7 MiB)
>
> [admin@qa04 ~]# ifconfig eth0
> eth0      Link encap:Ethernet  HWaddr 00:21:5A:F6:CD:C4
>          inet addr:10.157.42.157  Bcast:10.157.63.255  Mask:255.255.224.0
>          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>          RX packets:644117 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:5534 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:4096
>          RX bytes:80500670 (76.7 MiB)  TX bytes:839843 (820.1 KiB)
>          Interrupt:201 Memory:fd1f0000-fd200000
>
> [admin@qa04 ~]# ifconfig eth1
> eth1      Link encap:Ethernet  HWaddr 00:13:CC:01:91:3B
>          UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
>          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>          TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
>          collisions:0 txqueuelen:4096
>          RX bytes:0 (0.0 b)  TX bytes:640 (640.0 b)
>          Interrupt:209 Memory:fd2f0000-fd300000

Ah, that's right... linux doesn't mention the media speed in ifconfig like *BSD:

$ ifconfig re0
re0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric
0 mtu 1500
        options=3899<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
        ether e0:cb:4e:01:49:32
        inet6 fe80::e2cb:4eff:fe01:4932%re0 prefixlen 64 scopeid 0x5
        inet 192.168.20.2 netmask 0xffffff00 broadcast 192.168.20.255
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active

A quick google search says that you need to use ethtool (
http://www.cyberciti.biz/faq/howto-determine-ethernet-connection-speed/
), but there are other ways to determine the necessary details by
blasting ioctls, etc.

Cheers,
-Garrett

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