I have a basic question on understanding on how buffer works in the Cisco devices.
- When does the Packets go into the Buffer? Which means there is some packets that is going to come to the port and been send out without even going to the Buffer space?
- Is port buffer and the input/output queue the same?
- in what scenario does a normal buffer port gets full and how does a high buffer port help. Lets say if we have 1 gig port, it should be able to throughput 1 gig of data right, it should not have any buffern overruns in the port.
- When does a buffer overrun happens and how do we prevent it?
Would be great if you all can share some knowledge on understanding the buffers. Because we have a client who is very concerned on the buffer overruns they are seeing on there 1gig ports on the 6509 switches.