When you configure VBR, your SCR is the average rate you'll be transmitting at, while the PCR is the peak rate you'll send at for very short periods of time when you have lots of data to send. The size of that burst depends on your MBS value, or 50 in your case. Your credit to burst increments when you transmit at less than SCR for a period of time, but it will never go over 50 cells.
With what you've said, if the provider sold you a 2Mb SCR circuit with a 4Mb burst, you've configured it correctly. Your buddies are trying to tell you to make PCR and SCR equal at 4Mb, which will make your average rate 4Mbps, and eliminate any burst (if you're running newer code, it wont let you configure PCR=SCR with a burst value, since it is meaningless).
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...