01-19-2007 03:07 AM - edited 03-05-2019 01:52 PM
We have a Catalyst 2960G-24TC-L switch. I have set the 'jumbo frame mtu 9000'. When I try to ping a server located on G0/19 port from G0/1-4 ports the sever do not reply those requests for which packet size is above 1500 byte. It happens only that case, when I try to ping from a gigabit NIC. Everything is OK if the source switchports are different from the ports G0/1-4 or I try to ping from fastethernet NIC.
One more addition: First time, when I turned the switch on I set the first four switchports' speed to 100M and duplex full state. Later, when they changed the NIC from 100 Mbps to 1000 Mbps I set the ports state to auto. I have loaded the newest IOS to the swith, and reloaded it many times. The problem seems persistent.
Anyone has an idea?
01-19-2007 03:18 AM
Hi,
Can you try forcing the speed/duplex on the interfaces g0/1-4 to 1000/full and then repeat your tests?
-VJ
01-22-2007 07:42 AM
Unfortunately it did not solve our problem.
03-18-2009 10:21 AM
How can i force the Port on 2960G to Full Speed/Duplex Please ?
Thanks
03-18-2009 02:58 PM
Dave,
interface
speed <10, 100, 1000>
duplex full
03-19-2009 02:04 AM
Thanks
I tried this on my 2960G switch and i can not enable it.
03-18-2009 02:59 PM
Gyozo,
Is the server configured to transmit jumbo frame?
03-19-2009 08:18 AM
Yes, please make sure the server is configured for JF. Also, you might want to change MTU size on the VLAN.
03-20-2009 12:04 AM
Thank's for your help. In the meantime we have replaced the switch in warranty.
Gyozo
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