On 08/27/2012 03:16 PM, Alec T. Habig wrote:
Todd And Margo Chester writes:

Where would I go to check on this?  Is there a utility?

# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:E0:81:B2:10:D7
           inet addr:131.212.37.6  Bcast:131.212.37.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:9000  Metric:1
           RX packets:6914505 errors:0 dropped:0 overruns:0 frame:0
           TX packets:3983544 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:6511170177 (6.0 GiB)  TX bytes:1440910442 (1.3 GiB)
           Interrupt:18 Memory:c4200000-c4220000

The MTU 9000 says it's on for me on this interface.

# ifconfig eth2
eth2      Link encap:Ethernet  HWaddr 00:E0:29:85:EF:AD
           inet addr:192.168.2.1  Bcast:192.168.2.255  Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:138324 errors:0 dropped:0 overruns:0 frame:0
           TX packets:201726 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:18886234 (18.0 MiB)  TX bytes:154781925 (147.6 MiB)
           Interrupt:20 Base address:0x6000

in here, MTU's only 1500, so no jumbo frames.



Hi Alex,

$ ifconfig virbr0
virbr0    Link encap:Ethernet  HWaddr 52:54:00:EB:2D:7B
          inet addr:192.168.122.1  Bcast:192.168.122.255 Mask:255.255.255.0
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

It is the MTU, so no jumbo frames.  Thank you!

-T

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