Re: Jumbo Frames

Hi David,

Thanks for your reply.

If NIC is available for Jumbo Frames, we can try to find a tools to test.

On the Windows Server 2003 CD in the ValueAdd folder you will find a
program called ttcp

You can use this to generate large amounts of traffic with different buffer
and frame sizes since Ping probably does not support this functionality
because it¡¯s pretty old code.


Hope this helps.

Best regards,

Vincent Xu
Microsoft Online Partner Support

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--------------------
From: "David" <ca29086b-2136927634@xxxxxxxxxxxxxx>
References: <#RKJHtT0GHA.1256@xxxxxxxxxxxxxxxxxxxx>
<Ry8XIzV0GHA.4280@xxxxxxxxxxxxxxxxxxxxx>
Subject: Re: Jumbo Frames
Date: Tue, 5 Sep 2006 20:06:17 -0700
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The NIC is supported (I can adjust Jumbo Frames from the NICs control
panel). I have enabled it on the NIC, but it doesn't seem to be in
effect
when I ping localhost.


"Vincent Xu [MSFT]" <v-xuwen@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:Ry8XIzV0GHA.4280@xxxxxxxxxxxxxxxxxxxxxxxx
Hi David,

Thanks for posting.

First, Windows Server 2003 supports Jumbo Frame for sure but it also
require NIC to support it. In other words, I'd like to suggest you
check
if
the NIC in use is support Jumbo Frame and if it is enabled. Regarding
this,
please contact NIC manufacture for assistance.

Second, when you said Gear, you mean NIC or Switch? I ask this because
when
you ping localhost, it will go through local NIC but will not go through
any switches.

More information:


<http://download.microsoft.com/download/f/0/f/f0f28365-bd9a-4ff8-a5d4-fc0f94
ae7371/TCPIP_2003.doc>

Thanks.


Best regards,

Vincent Xu
Microsoft Online Partner Support

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--------------------
From: "David" <ca29086b-2136927634@xxxxxxxxxxxxxx>
Subject: Jumbo Frames
Date: Tue, 5 Sep 2006 15:33:13 -0700
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I'm trying to enable jumbo frames on our gear, but am having trouble
verifying it. When I enable it on my w2k3 server and then ping
localhost -f -l 9000 (or anything above 1492) I get a response that the
packet needs to be fragmented. How can I verify that enabling Jumbo
Frames
has actually gone into effect on my local machine (before
troubleshooting
the switch)? Is it fair to assume that pinging localhost doesn't even
put
the bits on the wire, and eliminates the switch as a problem?








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Relevant Pages

  • Re: Jumbo Frames
    ... The NIC is supported (I can adjust Jumbo Frames from the NICs control ... the NIC in use is support Jumbo Frame and if it is enabled. ... Second, when you said Gear, you mean NIC or Switch? ...
    (microsoft.public.windows.server.networking)
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