Avaya BayRS Version 14.10 Notice download pdf (Page 21)

Release Notes for BayRS Version 14.10 for the Passport 2430 and Passport 5430

308663-14.10 Rev 01

Configuring CES

To correctly support CBR (constant bit rate) bandwidth for CES, PVCs that are

external to the Passport 5430 must provide a minimum PCR (peak cell rate) and

SCR (sustained cell rate). If the PVCs do not provide these minimum rates, the

PVCs will experience data underruns, and the CES circuit will lose data.

The BCC and Site Manager automatically compute and set the PCR and SCR

rates on the Passport 5430 when you specify the timeslot and timeslot-subrate

values in the BCC or the Number of Timeslots and Per Timeslot Subrate values in

Site Manager. Table 1 lists the minimum PCR and SCR settings required for the

PVCs on the switch(es) in the ATM network, in order for the PVCs to carry CES

traffic between Passport 5430 routers.

Table 1. Minimum PCR and SCR Settings for CES PVCs

Timeslots

Subrate

(Kb/sec)

Data Rate

(Kb/sec)

PCR

(cells/sec)

SCR

(cells/sec)

1 5656187 187

1 6464215 215

2 64 128 427 427

3 64 192 640 640

4 64 256 852 852

5 64 320 1066 1066

6 64 384 1278 1278

7 64 448 1491 1491

8 64 512 1703 1703

9 64 576 1916 1916

10 64 640 2130 2130

11 64 704 2342 2342

12 64 768 2555 2555

13 64 832 2767 2767

14 64 896 2980 2980

15 64 960 3193 3193

16 64 1024 3406 3406

17 64 1088 3618 3618

18 64 1152 3622 3622

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 41 42

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Avaya BayRS Version 14.10 Notice Page 21