- play_arrow Fast Track: Initial Installation
- play_arrow Site Planning, Preparation, and Specifications
- play_arrow Initial Installation and Configuration
- play_arrow Maintaining, Installing and Replacing Components
- Maintaining MX240 Components
- Maintaining the MX240 Cooling System Component
- Maintaining MX240 Host Subsystem Components
- Maintaining MX240 Interface Modules
- Maintaining MX-SPC3 Services Card
- Maintaining MX240 Power System Components
- Maintaining MX240 SFP and XFP Transceivers
- Maintaining MX240 Switch Control Boards
- play_arrow Troubleshooting Hardware
- play_arrow Contacting Customer Support and Returning the Chassis or Components
- play_arrow Safety and Compliance Information
- General Safety Guidelines and Warnings
- Definitions of Safety Warning Levels
- Qualified Personnel Warning
- Fire Safety Requirements
- Warning Statement for Norway and Sweden
- Preventing Electrostatic Discharge Damage to an MX240 Router
- Installation Instructions Warning
- MX240 Chassis Lifting Guidelines
- Ramp Warning
- Rack-Mounting and Cabinet-Mounting Warnings
- Grounded Equipment Warning
- Laser and LED Safety Guidelines and Warnings
- Radiation from Open Port Apertures Warning
- Maintenance and Operational Safety Guidelines and Warnings
- General Electrical Safety Guidelines and Warnings
- Prevention of Electrostatic Discharge Damage
- AC Power Electrical Safety Guidelines
- AC Power Disconnection Warning
- MX240 DC Power Electrical Safety Guidelines
- DC Power Copper Conductors Warning
- DC Power Disconnection Warning
- DC Power Grounding Requirements and Warning
- DC Power Wiring Sequence Warning
- DC Power Wiring Terminations Warning
- Midplane Energy Hazard Warning
- Multiple Power Supplies Disconnection Warning
- Action to Take After an Electrical Accident
- Site Electrical Wiring Guidelines for MX Series Routers
- Agency Approvals and Compliance Statements
MX-Series Switch Control Board (SCB) Description
At the heart of the MX Series 5G Universal Routing Platform is the Switch and Control Board (SCB). The SCB is a single-slot card and has a carrier for the routing engine in the front. It has three primary functions: switch data between the line cards, control the chassis, and house the routing engine.
The MX-Series SCB:
Controls power to MPCs
Manages clocking, resets and boots
Monitors and controls systems functions, such as the fan speed, Power Distribution Module (PDM) status, and the system front panel.
The switch fabric is Integrated into the SCB, interconnecting all the DPCs and MPCs within the chassis and supporting up to 48 Packet Forwarding Engines. The routing engine installs directly into the SCB.
The number of SCBs supported varies, depending on the MX chassis and the level of redundancy. The MX240 and MX480 require two SCBs for 1+1 redundancy, whereas the MX960 requires three SCBs for 2+1 redundancy.
There are four generations of SCBs for the MX Series 5G Universal Routing Platform: SCB-MX, SCBE-MX, SCBE2-MX, and SCBE3-MX.
SCB-MX is the first-generation switch control board. The SCB-MX is designed to work with first-generation DPC line cards.
The SCBE-MX is the second generation switch control board and is designed specifically for use with MPC3E line cards to provide full line-rate performance and redundancy without a loss of bandwidth.
The SCBE2-MX provides improved fabric performance for high-capacity line cards using the third generation fabric XF2 chip (MPC4E, MPC5E, MPC2/3 NG, and MPC7E).
The SCBE3-MX Enhanced Switch Control Board provides improved fabric performance and bandwidth capabilities for high-capacity line cards using the ZF-based switch fabric.
Table 1 compares the SCB capacities of the MX Series 5G Universal Routing Platforms.
Table 2 lists the supported routing engines per SCB.
Description | Fabric Bandwidth Per Slot | MX240 Fabric Bandwidth | MX480 Fabric Bandwidth | MX960 Fabric Bandwidth |
|---|---|---|---|---|
Enhanced MX Switch Control Board (SCBE3-MX) | Up to 1.5 Tbps (non-redundant fabric configuration with MPC10E line cards); 1 Tbps (redundant fabric configuration with MPC10E line cards) | Up to 6 Tbps | Up to 18 Tbps | Up to 33 Tbps |
Enhanced MX Switch Control Board (SCBE2-MX) | Up to 480 Gbps (non-redundant fabric configuration); 340 Gbps (redundant fabric configuration) | Up to 1.92 Tbps | Up to 5.76 Tbps | Up to 10.56 Tbps |
Enhanced MX Switch Control Board (SCBE-MX) | Up to 240 Gbps (non-redundant fabric configuration); 160 Gbps (redundant fabric configuration) | Up to 930 Gbps | Up to 2.79 Tbps | Up to 5.25 Tbps |
Switch Control Board (SCB-MX) | Up to 240 Gbps (non-redundant fabric configuration); 120 Gbps (redundant fabric configuration) | Up to 465 Gbps | Up to 1.39 Tbps | Up to 2.6 Tbps |
Switch Control Board | First Supported Routing Engines |
|---|---|
SCBE3-MX | RE-S-1800x2 RE-S-1800x4 RE-S-X6-64G RE-S-X6-128G RE-S-X6-64G-LT |
SCBE2-MX | RE-S-1300 (EOLed) RE-S-2000 (EOLed) RE-S-1800 (all variants) RE-S-X6-64G RE-S-X6-128G |
SCBE-MX | RE-S-1300 (EOLed) RE-S-2000 (EOLed) RE-S-1800 (all variants) |
SCB-MX | RE-S-1300 (EOLed) RE-S-2000 (EOLed) RE-S-1800 |
CLI Identification
The SCBs are identified in the CLI as:
SCB Model | CLI Identification |
|---|---|
SCB-MX |
|
SCBE-MX |
|
SCBE2-MX |
|
SCBE3-MX |
|
user@host> show chassis hardware | match SCB Item Version Part Number Serial Number Description CB0 REV 07 710-021523 ABBC8281 MX SCB CB1 REV 07 710-021523 ABBC8323 MX SCB CB2 REV 07 710-021523 ABBD1410 MX SCB
user@host> show chassis hardware models | match SCBE Item Version Part Number Serial Number Description CB0 REV 02 750-031391 YE8505 Enhanced MX SCB CB1 REV 07 710-031391 YL6769 Enhanced MX SCB CB2 REV 07 710-031391 YE8492 Enhanced MX SCB
user@host> show chassis hardware models | match SCBE2 Item Version Part Number Serial Number Description CB0 REV 01 750-062572 CAGN2123 SCBE2-MX-S CB1 REV 07 750-062572 CAGN2456 SCBE2-MX-S CB2 REV 07 750-062572 CAGN2789 SCBE2-MX-S
user@host> show chassis hardware models | match SCBE3 Item Version Part number Serial number FRU model number CB 0 REV 23 750-070866 CALH6007 SCBE3-MX-S CB 1 REV 23 750-070866 CALH6017 SCBE3-MX-S CB 2 REV 23 750-070866 CALH6015 SCBE3-MX-S
Power Requirements for Switch Control Boards
Component | Part Number | Maximum Power Requirement |
|---|---|---|
SCB-MX (applies to MX240, MX480, and MX960) | 185 W at 55° C 160 W at 40° C 155 W at 25° C | |
SCBE-MX (applies to MX240, MX480, and MX960) | 160 W at 55° C 130 W at 40° C 120 W at 25° C | |
SCBE2-MX (applies to MX240, MX480, and MX960) | 185 W at 55° C 160 W at 40° C 155 W at 25° C | |
SCBE3-MX (applies to MX240, MX480, and MX960) | 275 W at 55° C 260 W at 40° C 245 W at 25 C° |
