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MX104 Management and Console Port Specifications and Pinouts

 

MX104 Clocking and Timing Ports Overview

Four Subminiature B (SMB) connectors (for 10-MHz and 1-PPS), one RJ-48 port (for BITS), and one RS-232 port (for TOD) on the front panel of the router connect to external clock signal sources. The clocking ports provide the synchronized output clocks from any one of the reference clock inputs based on the clock’s priority.

The reference clock inputs can be Ethernet-recovered clocks, T1 or E1 line clocks, IEEE 1588v2-recovered clocks, BITS timing, 10-MHz timing, and 1-PPS timing. The T1 or E1 line clock also supports loop timing. These clocking ports distribute a synchronized clock signal throughout the chassis by locking onto the selected clock source. In the absence of these configured ports, the local oscillator present in the system provides the chassis synchronization.

Clock sources within the MX104 router include:

  • External clock timing port

  • 10-MHz timing connectors (one input and one output)

  • 1-pulse-per-second (PPS) connectors (one input and one output)

  • Time-of-day (TOD) RS-232 port

  • Synchronous Ethernet support on SFP ports as timing input or output

  • Packet (IEEE 1588-2008) v2 timing includes:

    • Timing input when configured as Ordinary Clock (OC) or Boundary Clock (BC)

    • Timing output when configured as BC

MX104 Routing Engine Ethernet Port Specifications

Cable Specifications

Table 1 lists the specifications for the cables that connect to the ETHERNET port.

Table 1: MX104 Routing Engine Ethernet Port Cable Specifications

Specification

Value

Cable specification

Category 5 cable or equivalent suitable for 1000Base-T operation

Cable/wire supplied

One 15-ft (4.57-m) length with RJ-45/RJ-45 connectors

Maximum length

328 ft (100 m)

Router receptacle

RJ-45 autosensing

Pinouts

The port on the front panel labeled ETHERNET is an autosensing 10/100/1000-Mbps Ethernet RJ-45 receptacle that accepts an Ethernet cable for connecting the Routing Engine to a management LAN (or other device that supports out-of-band management). Table 2 describes the RJ-45 connector pinout.

Table 2: Ethernet Port Pinouts

Pin

Signal

Description

1

TX+_D1

Transmit data+

2

TX–_D1

Transmit data–

3

RX+_D2

Receive data+

4

BI+_D3

Bidirectional+

5

BI–_D3

Bidirectional–

6

RX–_D2

Receive data–

7

BI+_D4

Bidirectional+

8

BI–_D4

Bidirectional–

MX104 Routing Engine Auxiliary and Console Ports Specifications

The Routing Engine contains two ports labeled AUX and CONSOLE.

Note

The AUX port is not supported.

The ports are asynchronous serial interfaces that accept an RJ-45 connector. The ports connect the Routing Engine to an auxiliary or console management device. Table 4 describes the RJ-45 connector pinout.

Cable Specifications

Table 3 lists the specifications for the cables that connect to console port.

Table 3: MX104 Routing Engine Console Port Cable Specifications

Specification

Value

Cable specification

RS-232 (EIA-232) serial cable

Cable/wire supplied

One 6-ft (1.83-m) length with RJ-45/DB-9 connectors

Maximum length

6 ft (1.83 m)

Router receptacle

RJ-45 socket

Pinouts

Table 4 describes the RJ-45 connector pinout.

Table 4: Console Port Pinouts

Pin

Signal

Description

1

RTS

Request to Send

2

DTR

Data Terminal Ready

3

TXD

Transmit Data

4

Ground

Signal Ground

5

Ground

Signal Ground

6

RXD

Receive Data

7

DSR/DCD

Data Set Ready

8

CTS

Clear to Send

MX104 Routing Engine USB Port Specifications

The following Juniper Networks USB Flash drives have been tested and are officially supported for the USB port on all MX Series routers:

  • RE-USB-1G-S

  • RE-USB-2G-S

  • RE-USB-4G-S

Caution

Any USB memory product not listed as supported for MX Series routers has not been tested by Juniper Networks. The use of any unsupported USB memory product could expose your MX Series router to unpredictable behavior. Juniper Networks Technical Assistance Center (JTAC) can provide only limited support for issues related to unsupported hardware. We strongly recommend that you use only supported USB Flash drives.

All USB Flash drives used on MX Series routers must have the following features:

  • USB 2.0 or later.

  • Formatted with a FAT or MS-DOS file system.

MX104 Alarm Contact Port Specifications

Cable Specifications

Table 5 lists the specifications for the cables that connect to the ALARM port.

Table 5: MX104 Alarm Contact Port Cable Specifications

Specification

Value

Cable

DE-15 alarm cable

Wire gauge

Between 20 AWG (0.52 mm2) and 14 AWG (2.08 mm2)

Router receptacle

15-pin D-type

Port Pinouts

You can independently configure alarm input ports (0 to 3) to operate in Normally Open or Normally Closed mode, and to trigger a red alarm condition or a yellow alarm condition, or to ignore alarm conditions.

You can independently configure alarm output ports (0 and 1) to relay alarm information when the system condition goes to a red or yellow alarm condition and when the alarm output port is configured to trigger based on alarm input condition. Alarm output ports (2 and 3) are used to indicate major and minor system alarms and are normally in open mode.

Table 6 shows the alarm contact connector pinouts.

Table 6: Alarm Contact Connector Pinouts

Pin Number

Signal Definition

Direction

CLI Port Mapping

Function

1

ALARM_IN0_NO/NC

Input

Input Alarm Port 0

External alarm input 0 (if voltage on this pin is between 24V to 72V with reference to Pin 6, alarm input 0 is in closed condition)

2

ALARM_IN1_REF

Input

Input Alarm Port 1

External alarm input 1 (Reference for Pin 7)

3

ALARM_IN2_NO/NC

Input

Input Alarm Port 2

External alarm input 2 (if voltage on this pin is between 24V to 72V with reference to Pin 8, alarm input 2 is in closed condition)

4

ALARM_IN3_NO/NC

Input

Input Alarm Port 3

External alarm input 3 (if voltage on this pin is between 24V to 72V with reference to Pin 8, alarm input 3 is in closed condition)

5

ALARM_OUT3_REF

Output

Reserved for Major alarm

External alarm output 3 (this pin is connected to Pin 10 in closed condition)

6

ALARM_IN0_REF

Input

Input Alarm Port 0

External alarm input 0 (Reference for Pin 1)

7

ALARM_IN1_NO/NC

Input

Input Alarm Port 1

External alarm input 1 (if voltage on this pin is between 24V to 72V with reference to Pin 2, alarm input 1 is closed)

8

ALARM_IN2_IN3_REF

Input

Input Alarm Port 2 and Input Alarm Port 3

Common contact for external alarm input 2 and 3 (Reference for Pin 3 and Pin 4)

9

ALARM_OUT2_REF

Output

Reserved for Minor alarm

External alarm output 2 (this pin is connected to Pin 15 in closed condition)

10

ALARM_OUT3_NO/NC

Output

Reserved for Major alarm

External alarm output 3 (this pin is connected to Pin 5 in closed condition)

11

ALARM_OUT0_NO/NC

Output

Output Alarm Port 0

External alarm output 0 (this pin is connected to Pin 12 in closed condition)

12

ALARM_OUT0_REF

Output

Output Alarm Port 0

External alarm output 0 (this pin is connected to Pin 11 in closed condition)

13

ALARM_OUT1_NO/NC

Output

Output Alarm Port 1

External alarm output 1 (this pin is connected to Pin 14 in closed condition)

14

ALARM_OUT1_REF

Output

Output Alarm Port 1

External alarm output 1 (this pin is connected to Pin 13 in closed condition)

15

ALARM_OUT2_NO/NC

Output

Reserved for Minor alarm

External alarm output 2 (this pin is connected to Pin 9 in closed condition)

MX104 BITS Port Specifications

The external Building-Integrated Timing Supply (BITS) clock interface port labeled EXT REF CLK IN on the front panel of the router allows you to connect external clock signal sources.

Two LEDs indicate link status on the port and function in the same way as the T1/E1 ports. The clocking information is extracted from the input, but the data is discarded.

Cable Specifications

Table 7 lists the specifications for the cables that connect to the EXT REF CLK IN port.

Note

The plastic connector at the end of the RJ-48 cable is physically identical to an RJ-45 connector (see Figure 1). You must ensure that the cable pinouts match the pinouts described in Table 8.

Figure 1: RJ-48 Connector for MX104 BITS Ports
RJ-48 Connector for MX104 BITS
Ports

Table 7: MX104 BITS Port Cable Specifications

Specification

Value

Cable

RJ-48 shielded cable

Router receptacle

Autosensing RJ-48 connector

Port Pinouts

Table 8 provides the pinout information for the RJ-48 connector for the external clocking input port.

Table 8: BITS Port Pinouts

Pin

Description

Direction

1

EXT_CLKA_RRING_LINE

Input

2

EXT_CLKA_RTIP_LINE

Input

3

Reserved

4

EXT_CLKA_TRING_LINE

Output

5

EXT_CLKA_TTIP_LINE

Output

6

Reserved

7

Reserved

8

Reserved

MX104 1-PPS and 10-MHz GPS Port Specifications

The router contains four ports that support 1-pulse-per-second (PPS) and 10-MHz GPS signals. These signals are internally isolated and have surge protection.

Table 9 lists the specifications for the cables that connect to the 1PPS and 10MHZ input and output ports.

Table 9: 1-PPS and 10-MHz GPS Port Specifications

Specification

Value

Cable specification

Coaxial

Router receptacle

Four SMB input and output connectors

Connector specification

Molex 50-ohm SMB (or equivalent)

Signal support

10-MHz GPS and 1-pulse-per-second (PPS)

MX104 Time of Day Port Specifications

A time-of-day (ToD) port on the front panel of the router allows you to connect external timing signal sources. The external timing input port is labeled TOD.

Cable Specifications

Table 10 lists the specifications for the cable that connects to the TOD port.

Note

The output signals are not supported

Table 10: TOD Cable Specifications

Specification

Value

Cable specification

RS-232 (EIA-232) serial cable

Cable/wire

One 6-ft (1.83-m) length with RJ-45 connectors

Maximum length

6 ft (1.83 m)

Connector

RJ-45 socket

Port Pinouts

Table 11 provides the pinout information for the RS-232 connector for the ToD port.

Table 11: ToD Port Connector Pinouts

Pin

Description

Direction

1

Reserved

2

Reserved

3

Transmit Data

Output

4

Signal Ground

5

Signal Ground

6

Receive Data

Input

7

Reserved

8

Reserved