man ifconfig
/MTU
mtu N This parameter sets the Maximum Transfer Unit (MTU) of an
interface.
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On Mon, 27 Aug 2012, Todd And Margo Chester wrote:
> On 08/27/2012 03:16 PM, jdow wrote:
>> On 2012/08/27 14:37, Todd And Margo Chester wrote:
>>> On 08/27/2012 01:57 PM, Carl Friedberg wrote:
>>>
>>>>> -----Original Message-----
>>>>> From: [log in to unmask] [mailto:owner-
>>>>> [log in to unmask]] On Behalf Of Todd And Margo
>>>>> Chester
>>>>> Sent: Monday, August 27, 2012 4:49 PM
>>>>> To: Scientific Linux Users
>>>>> Subject: jumbo frames?
>>>>>
>>>>> Hi All,
>>>>>
>>>>> Can anyone tell me what this means?
>>>>>
>>>>> just disable jumbo frames on centos host interface
>>>>> ifcfg and ethernet switch.
>>>>>
>>>>> Many thanks,
>>>>> -T
>>>>
>>>
>>> > Todd and Margo Chester:
>>> >
>>> > I can give you some information.
>>> >
>>> > jumbo frames refer to a capability to send very large packets
>>> > over gigabit Ethernet (somewhere near 9,000 bytes), as
>>> > opposed to the traditional ~1500 byte packet size on
>>> > traditional Ethernet.
>>> >
>>> > This only works between two end-points if every switch
>>> > handling the frame/packet has jumbo frame capability
>>> > enabled.
>>> >
>>> > There have been instances (I've run into them, but not
>>> > on SL) where enabling jumbo frames can cause issues.
>>> >
>>> > So, since you didn't provide context on that piece of
>>> > advice, I can't guess why they were suggesting
>>> > disabling jumbo frames.
>>> >
>>> > Typically, jumbo frames are disabled by default (but,
>>> > I don't know what the SL policy is).
>>> >
>>> > Carl
>>> >
>>> > Carl Friedberg
>>> > www.about.me/carl.friedberg
>>> > [log in to unmask]
>>> > www.comets.com
>>> > Problems Solved
>>> >
>>> >
>>>
>>> Where would I go to check on this? Is there a utility?
>>>
>>
>> ifconfig comes to mind.
>> {^_^}
>>
>
> $ 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)
>
> What am I looking for?
>
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