Avaya M-ACCF/SF manual Domain Usage Considerations, Avaya M770 Module DRU Budget

Chapter 3 Installation

Domain Usage Considerations

The M-ACC is a DomainX module of the Avaya M770. The maximum number of DomainX modules you can insert in the hub is determined by domain usage considerations, as follows (M-SPX refers to either the M-SPV, M-SPX or M-SPS in the following examples):

The Avaya M770 allows a maximum of 100 Domain Resource Units (DRUs) for DomainXL (Left DomainX - slots 1-7) and the M-SPX, and 100 DRUs for DomainXR (Right DomainX - slots 8-14) and the M-SPX. Each of the DomainX modules, as well as the M-SPV module, has a DRU budget, as shown in the table below. When planning your chassis configuration, calculate whether it fits the Avaya M770 DRU budget.

Table 3.1 Avaya M770 Module DRU Budget

Module Name	DRU Budget
M-ACCF/M-ACCSF	3 DRUs
M-SPV/M-SPX/M-SPS	10 DRUs
M32-100T	12 DRUs
M12-100T	18 DRUs
M12-100F	18 DRUs
M2-1000SX/LX	15 DRUs
M-MLS	6 DRUs
M14-10F	6 DRUs

Budget Calculation Examples

1If you have one M-ACCF, seven M32-100 modules and the M-SPX you get: 3+7*12+10 = 97 DRUs. Assuming that there are seven modules on both the DomainXL and Domain XR switches you get a total of 448 ports.

2If you have two M-ACCF, six M14-10F modules, an M2-1000 module and the M- SPX you get: 2*3+6*6+15+10 = 67 DRUs. Assuming that you have the same configuration on the DomainXL and Domain XR switches you get a total of 168 Ethernet, 12 Fast Ethernet and 4 Gigabit ports.

3If you have one M-ACCF, five M2-1000 modules and the M-SPX you get: 3+5*15+10=88 DRUs. Assuming that there are six modules on both the DomainXL and Domain XR switches you get a total of 24 Gigabit Ethernet ports and 72 Fast Ethernet ports.

4If you have four M32-100 modules, one M2-1000 and the M-SPX you get: 4*12+15+10=73 DRUs. This is less than 100 DRUs and is therefore another possible configuration.

Avaya M770 M-ACCF/SF ATM Access Modules User’s Guide 37