1.
Choose a combination of line modules appropriate for the performance. See “Choosing
a Combination of Line Modules” on page 360.
2.
Disable slots that contain unwanted line modules, or modify the combination of line
modules in the router. See “Disabling and Reenabling Line Modules, SRP Modules,
and SFMs” on page 346, and
ERX Hardware Guide, Chapter 4, Installing Modules.
3.
Specify the type of performance. See “Specifying the Type of Performance” on page 363.
Choosing a Combination of Line Modules
For line rate performance, the total bandwidth required by the line modules in the slot
group must not exceed the bandwidth available from the SRP module. In this case, the
combination of line modules that can reside in a slot group depends on the following:
•
The number of slots per group
•
The bandwidth available from the SRP module
•
The bandwidth required by each line module
•
In the case of the SRP-5G+ and SRP-10G modules, the switches (upper and lower)
that the line module can use.
Slot Groups
The number of slots in a group depends on the E Series model. For information about
slot groups, see
ERX Hardware Guide, Chapter 4, Installing Modules
.
SRP Modules Bandwidth
Different SRP modules offer different bandwidths:
•
The SRP-10G module provides 2.5 Gbps bandwidth per slot group.
•
The SRP-5G+ module (ERX705 router only) provides:
•
2.5 Gbps bandwidth per slot group
•
5 Gbps bandwidth per router
Line Modules Bandwidth and Switch Usage
The SRP-5G+ and SRP-10G modules comprise two switches; each switch provides 50
percent of the bandwidth.
The line modules in a slot group cannot operate at line rate if:
•
The sum of their bandwidths exceeds the bandwidth that the SRP module can supply
per slot group.
•
The sum of the bandwidths they require from one SRP switch exceeds the bandwidth
that the SRP switch can supply per slot group.
Table 40 on page 361 shows the bandwidth that each line module requires for line rate
performance and the switches that the line module can use on the SRP-5G+ and SRP-10G
modules.
Copyright © 2010, Juniper Networks, Inc.
360
JunosE 11.3.x System Basics Configuration Guide
Содержание JUNOSE 11.3
Страница 6: ...Copyright 2010 Juniper Networks Inc vi...
Страница 8: ...Copyright 2010 Juniper Networks Inc viii JunosE 11 3 x System Basics Configuration Guide...
Страница 24: ...Copyright 2010 Juniper Networks Inc xxiv JunosE 11 3 x System Basics Configuration Guide...
Страница 32: ...Copyright 2010 Juniper Networks Inc 2 JunosE 11 3 x System Basics Configuration Guide...
Страница 146: ...Copyright 2010 Juniper Networks Inc 116 JunosE 11 3 x System Basics Configuration Guide...
Страница 166: ...Copyright 2010 Juniper Networks Inc 136 JunosE 11 3 x System Basics Configuration Guide...
Страница 432: ...Copyright 2010 Juniper Networks Inc 402 JunosE 11 3 x System Basics Configuration Guide...
Страница 488: ...Copyright 2010 Juniper Networks Inc 458 JunosE 11 3 x System Basics Configuration Guide...
Страница 524: ...Copyright 2010 Juniper Networks Inc 494 JunosE 11 3 x System Basics Configuration Guide...
Страница 554: ...Copyright 2010 Juniper Networks Inc 524 JunosE 11 3 x System Basics Configuration Guide...
Страница 566: ...Copyright 2010 Juniper Networks Inc 536 JunosE 11 3 x System Basics Configuration Guide...
Страница 588: ...Copyright 2010 Juniper Networks Inc 558 JunosE 11 3 x System Basics Configuration Guide...
Страница 613: ...PART 3 Index Index on page 585 583 Copyright 2010 Juniper Networks Inc...
Страница 614: ...Copyright 2010 Juniper Networks Inc 584 JunosE 11 3 x System Basics Configuration Guide...
Страница 632: ...Copyright 2010 Juniper Networks Inc 602 JunosE 11 3 x System Basics Configuration Guide...