I noticed that different routers have different Maximum Burst Size (PCR) when configuring ATM vbr-nrt shaping see below, which can be configured PCR only to 44209K. Another router has PCR of 40700K. Our contract speed( no CIR) with AT&T is 44736K (Fulll DS3). Is there any ATM card which can go to 44736? Thanks.
Some IOS version or handrware drivers allow entering a wrong value for CRs, that is they allow the full physical line rate rather than the bandwitdh available to ATM, that is excluding DS3 overhead. The second approach is correct.
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