[c-nsp] how to validate cell rates?

Clinton Work clinton at scripty.com
Thu Jan 20 11:50:07 EST 2005


Gert, I agree with your calculation, but it really depends upon how the 
Telco has built the ATM VC inside their network. The Telco could have
used a VBR PVC with an unforgiving CDVT (Cell Delay Variance Tollerance) 
value. The only soltuion may be reducing your PCR value until the packet 
loss goes away.


Gert Doering wrote:
> Hi,
> 
> we have an interesting problem here (as usual, a Telco is involved)...
> 
> Customer has an SDSL line, which is handed to us as an ATM PVC with
> ATM AAL5 SNAP encapsulation (customer side is bridged to ethernet by
> the Telco termination device).
> 
> Our side is configured to use "ubr 2303", which translates to
> 5432 cells/second ("show atm vc <name>").  Which is exactly the cell 
> rate that we are permitted to use (actually it's 5433 c/s, but you 
> can't configure that on Cisco gear - ubr 2304 translates to 5434 c/s)
> 



More information about the cisco-nsp mailing list