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MX204 Management and Console Port Specifications and Pinouts

RJ-45 Connector Pinouts for MX Series CB-RE or RCB Auxillary and Console Ports

The ports–labeled—AUX and CONSOLE—on the Control Board and Routing Engine (CB-RE) or the Routing and Control Board (RCB) are asynchronous serial interfaces that accept an RJ-45 connector. The ports connect the Routing Engine to an auxiliary or console management device. Table 1 describes the RJ-45 connector pinout.

Note:

In routers where the Routing Engine and Control Board (CB) are integrated into a single board, a CB-RE is known as Routing and Control Board (RCB). The RCB is a single FRU that provides Routing Engine and CB functionality.
Table 1: RJ-45 Connector Pinout for the AUX and CONSOLE Ports

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

RJ-45 Connector Pinouts for an MX Series CB-RE or RCB Management Port

The port on the Control Board and Routing Engine (CB-RE; Routing and Control Board (RCB)) labeled MGMT 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).

Note:

In routers where the Routing Engine and Control Board (CB) are integrated into a single board, a CB-RE is known as Routing and Control Board (RCB). The RCB is a single FRU that provides Routing Engine and CB functionality.

Table 2 describes the RJ-45 connector pinout.

Table 2: RJ-45 Management Port Connector Pinouts for the CB-RE or RCB MGMT Port

Pin

Signal

Description

1

TRP1+

Transmit/receive data pair 1

2

TRP1–

Transmit/receive data pair 1

3

TRP2+

Transmit/receive data pair 2

4

TRP3+

Transmit/receive data pair 3

5

TRP3–

Transmit/receive data pair 3

6

TRP2–

Transmit/receive data pair 2

7

TRP4+

Transmit/receive data pair 4

8

TRP4–

Transmit/receive data pair 4

RJ-45 Connector Pinouts for the External Clock Ports

The Routing and Control Board (RCB) contains two RJ-45 connectors for building-integrated timing supply (BITS) external clock support. Table 3 provides the pinout information of the RJ-45 management port connectors

Table 3: External Clock Pinouts

Pin

Description

Direction

A1

PortA, Rx, Ring

Input

A2

PortA, Rx, Tip

Input

A3

Reserved

–

A4

PortA, Rx, Ring

Output

A5

PortA, Rx, Tip

Output

A6

Reserved

–

A7

Reserved

–

A8

Reserved

–

B1

PortB Rx, Ring

Input

B2

PortB Rx, Tip

Input

B3

Reserved

–

B4

PortB Rx, Ring

Output

B5

PortB Rx, Tip

Output

B6

Reserved

–

B7

Reserved

–

B8

Reserved

–

See Also