Line Cards - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Complete Software Guide for Junos

Line Cards

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OS for EX Series Ethernet Switches, Release 10.4
installed in the front of the chassis in the slots labeled RE0 and RE1. A base configuration
(AC version) EX8216 switch has one RE module. A redundant configuration (AC and DC
versions) EX8216 switch has a second RE module for redundancy. See Routing Engine
(RE) Module in an EX8216 Switch and EX8216 Switch Configurations.
The Switch Fabric (SF) modules provide the switching functionality to an EX8216 switch.
The SF modules are hot-insertable and hot-removable field-replaceable units (FRUs).
All eight SF modules are installed in the rear of the chassis in the slots labeled SF7 through
SF0. In an EX8216 switch, all eight SF modules are active and must be installed in the
switch for normal operation. If a single SF module fails, the input/output traffic for that
module is load-balanced among the remaining SF modules, providing graceful degradation
in midplane performance. The impact of an SF module failure on the performance of an
EX8216 switch varies based on the type of line cards installed in the switch and the traffic
mix flowing through them. In an EX8216 switch configuration that is fully loaded with
8-port 10-Gigabit Ethernet SFP+ line cards, if one SF module fails, the remaining seven
SF modules still have sufficient switching capacity to maintain continuous switch
operation at full wire-rate performance. See Switch Fabric (SF) Modules in an EX8216
Switch.
The EX8216 switch can also be connected to an XRE200 External Routing Engine. An
XRE200 External Routing Engine is used to connect multiple EX8200 switches into a
Virtual Chassis. See XRE200 External Routing Engine Hardware Overview.
The EX8216 switch features 16 horizontal line card slots and supports wire-rate
performance for all packet sizes for the installed line cards. The line cards in EX8200
switches combine a Packet Forwarding Engine and Ethernet interfaces on a single
assembly. They are field-replaceable units (FRUs), and you can install them in the slots
labeled 0 through 15 on the front of the switch chassis. All line cards are hot-insertable
and hot-removable.
The following line cards are available for EX8216 switches:
8-port 10-Gigabit Ethernet SFP+ line card: This line card has eight 10-gigabit SFP+
ports on its faceplate in which you can install SFP+ transceivers. See 8-port SFP+ Line
Card in an EX8200 Switch.
40-port 10-Gigabit Ethernet SFP+ line card: This line card has 40 10-gigabit SFP+ ports
on its faceplate in which you can install either SFP+ or SFP transceivers. See 40-port
SFP+ Line Card in an EX8200 Switch.
48-port 100/1000 SFP line card: This line card has 48 1-gigabit SFP ports on its
faceplate in which you can install SFP transceivers. See 48-port SFP Line Card in an
EX8200 Switch.
48-port 10/100/1000 RJ-45 line card: This line card has 48 10/100/1000 Gigabit
Ethernet ports with RJ-45 connectors on its faceplate. See 48-port RJ-45 Line Card in
an EX8200 Switch.
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