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## Memory Requirements for Queue and Buffers

JUNOSe software uses 128-byte buffers.

The egress memory available for queues available depends on the ASIC and the line module. Table 5 lists the egress memory.

Table 5: Egress Memory and Region Size on ASIC Line Modules

ASIC | Line Module | Egress Memory (MB) | Region Size (MB)
--- | --- | --- | ---
EFA | All EFA line modules | 32 | 4
FFA | GE-2 and GE-HDE | 64 | 8
| OC48 | 128 | 16
ES2 4G LM | 128 | 16
TFA | ES2 10G LM | 96 | 12

#### Related Topics

- To identify the type of ASIC used by a line module, see the ERX Module Guide and the E120 and E320 Module Guide
- Guidelines for Managing Queue Thresholds
- Guidelines for Managing Buffers

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