Thank you for your fast reply. I think you might be right.
after we configure the speed, the port would not has "a-"
If we do not configure the speed, the port would have "a-". Why the ports in the same line card show different value "a-1000", and "a-100"? what decides the value?
Steven Carnahan
When the speed is set to auto it is based on the device at both ends. It is rare to find a device with a NIC that is only capable of 10/100 anymore however they are still out there. Mostly older computers and such. Of course someone might have set the speed on the device to 100 instead of auto if they were seeing problems.
If one is connected to a switch port that is set to auto it will "step down" it's speed to 100 to accommodate that device.
after we configure the speed, the port would not has "a-"
If we do not configure the speed, the port would have "a-". Why the ports in the same line card show different value "a-1000", and "a-100"? what decides the value?