How to generate interface error manually

[Ramesh Babu]

Hi Friends,

For testing purpose we needs to generate interface error manually on CISCO 2921.

Please do the needful.

Note:

With out cable change we needs to do

We changed duplex & speed, mtu. but no use.

[Leo Laohoo]

Not possible unless you change the duplex to half and speed to 10 Mbps.

[Ramesh Babu]

Thanks for your info.