Allowed Combinations For Line Rate Performance; Table 40: Bandwidth Statistics For Line Modules - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SYSTEM BASICS CONFIGURATION GUIDE 2010-10-04 Configuration Manual

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Table 40: Bandwidth Statistics for Line Modules

Total Bandwidth
Line Module Required (Gbps)
cOCx/STMx 2.46
COCX-F3 2.46
CT3/T3-F0 2.46
GE/FE 2.46
IPSec Service 2.46
OC3/STM1 2.46
GE/FE
OCx/STMx ATM 1.22
OCx/STMx POS 2.46

Allowed Combinations for Line Rate Performance

The SRP-5G+ and SRP-10G modules support all the line modules listed in Table 40 on
page 361.
Only certain combinations of line modules allow line rate performance (see Table 41 on
page 362 through Table 43 on page 362). However, if performance lower than line rate is
acceptable, you can use any combination of line modules in a slot group.
For example, the SRP-10G module offers a total bandwidth of 2.5 Gbps for each slot
group. The GE line module requires 2.46 Mbps bandwidth for operation at line rate, and
can use both switches in the SRP-10G module. If you require line rate from a GE line
module, install only one GE line module in the slot group. However, if lower performance
is acceptable, you can install two or three GE line modules in a slot group and enable
bandwidth oversubscription.
When bandwidth oversubscription is enabled, all line modules optimize use of the
resources available. For example, if two GE line modules are installed in a slot group,
each line module is allocated 50 percent of the available bandwidth. However, if one
line module is using less bandwidth than it is allocated, the other line module can use
more bandwidth than it is allocated and can operate at a greater rate.
Table 41 on page 362, Table 42 on page 362, and Table 43 on page 362 indicate combinations
of line modules that allow line rate performance.
Chapter 6: Managing Modules
Switches Used on SRP-5G+ and SRP-10G Modules
Both switches
Both switches
Both switches
Both switches
Both switches
Both switches
Both switches
Both switches
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