[nsp] Cat 6500 jumbo frame support anomolies

[Sean Crocker]

Scott,

Send sh mod, sh port jum, and verify that you have the right mtu
configured on the MSFC's VLAN interfaces.

I'm not sure about 6316s, but 6416s and 6516s work fine...

Sean

---------- Original Message ----------------------------------
From: "Keoseyan, Scott" <Scott.Keoseyan at Broadwing.com>
Date:  Wed, 9 Apr 2003 09:41:25 -0400

>Hello, 
>
>I have enabled jumbo frame support on a 6500 (CatOS 7.2.2 with WS-X6316-GE-TX) and then on a couple Netfinity X-series servers w/1000Base-T NICs and I am seeing some strangeness.
>
>Performance seems sluggish between these two devices and the two interfaces on the switch are recording giants.  I checked the IBM docs for the NIC and they state either that the frame-size is 9000 bytes or 9KB (9216 bytes) (they were unclear) which should be fine as the jumbo-frame size on the switch is 9216 bytes.  I don't have the server NICs configured for anything special other than I have the secondary NIC configured as a stand-by port connected to another switch, and I am wondering why I would still be seeing giants and why the performance is off.
>
>Would anyone have any ideas?  I have disabled jumbo-frame support on the switches and the servers for the time being but I am concerned that having it turned on would be a problem.
>
>-sak
>
>
>
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