[c-nsp] ATM IMA Overhead....

[Dan Hollis]

On Thu, 5 Aug 2004, THOMAS, MEAGAN (PBI) wrote:
> Hey, this may be off base, but what the hey, I gotta try....
> So, does anyone have any resources that can direct us to the kind of
> overhead ATM can cause when using IMA?  Cisco's IMA docs suggest 10-12%, but
> ATM overhead varies - other documents on Cisco's site suggest ATM overhead
> is like 20%, depending on packet size.

The biggest impact appears to be the encapsulation. I did tests a year or 
two ago which indicated aal5snap overhead was around 22% whereas aal5mux 
is around 13%. This was with mtu 1500.

-Dan