Juniper MX240 - Table 4: SCB Comparison

multifunction slot and lowest dedicated line card slot. The line cards are connected to
one or two SCBs. See Table 4 on page 4 for the supported SCBs.
An FPC supports up to two PICs. An MPC supports up to two Modular Interface Cards
(MICs).
Each DPC includes two or four Packet Forwarding Engines. Each Packet Forwarding
Engine enables a throughput of 10 Gbps.
Several types of line cards, are available. For a list of the supported line cards, see the
MX Series Interface Module Reference.
Three SCBs are available for the MX240 routers—the SCB, the SCBE, and the SCBE2.
Table 4 on page 4 lists the MX240 SCBs.
Table 4: SCB Comparison
Switch Fabric CapacityDescriptionModel Number
1.92 Tbps half duplexEnhanced MX Switch Control Board (SCBE2)SCBE2- MX-BB
.96 TbpsEnhanced Switch Control Board (SCBE)SCBE-MX-BB
.48 TbpsSwitch Control Board (SCB)SCB-MX-BB
The connections between line cards and SCBs are organized in three groups:
•
Switch fabric—Connects the line cards and provides for packet transport between the
line cards.
•
Control plane—Gigabit Ethernet links between the combined SCBs/Routing Engines
and each DPC, MPC, or FPC. All board-to-board information is passed over Ethernet
except for low-level status and commands.
•
Management signals—Provide low-level status diagnostic support.
Related
Documentation
• MX240 Component Redundancy on page 7
• MX240 Chassis Description on page 8
• MX240 Host Subsystem Description on page 21
• MX240 Craft Interface Overview on page 12
• MX240 Power System Description on page 89
• MX240 Cooling System Description on page 17
• MX240 Router Physical Specifications on page 109
Copyright © 2017, Juniper Networks, Inc.4
MX240 3D Universal Edge Router Hardware Guide