> 1. Buffer : Dynamic per port

A buffer is memmory that is allocated to hold recived packets before the
packets can be written out onto the exiting port. Dynamic allocation means
that it is given out on a needed basis .If it is dynamic per port , then the
switch allocates the available memmory to the used ports.if you have 256K ,
and 10 ports are in use each port should get 25.6K

2. Flash memory :

Refers to memmory that can be written to , although is done so infrequently.
This type of memmory dosen't lose information a a power off. In a switch ,
it is generally used to hold the switch's operating system .(perhaps the
Cisco IOS an most of the newer Catalyst switches)

> 3. CPU DRAM :

DRAM  is general porpose memmory that can be read and written to quickly. It
will lose its information aon a power off. In a switch , it mioght be used
to hold the mac-address-tables and the runtime configuration.

> The question is:
>
> 1. Is it not the total RAM is equally divided to all ports, if all port
> are in use.
> 2. What is meant by flash memory?
>
>
> Thanks in Advance
>
> N. Sakthivel
> ------------
>
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