Appendix

Certain troubleshooting aids of the Cisco N540-FH-CSR-SYS and Cisco N540-FH-AGG-SYS enable you to perform these tasks that assist the troubleshooting process:

LEDs

The Cisco N540-FH-CSR-SYS Router LEDs are similar for most of the variants, and any differences between the routers are specifically called out.

Router LEDs

All the data port LEDs in the Cisco N540-FH-CSR-SYS Router are at the front panel. There are five LEDs that reflect the different statuses of the system.

Table 1. Router LED Descriptions

LED

Color

Status

Alarm

Red

Critical alarm - system-scope (including RP0).

Amber

Major alarm - system-scope (including RP0).

Flashing Amber

Minor alarm - system-scope (including RP0).

Off

No alarm.

Status

Green

The module is operational but has no active major or critical alarms.

Amber

Host kernel booted and XR is booting.

Flashing Red

Not Applicable.

Power Supply LEDs


Note
The following table is applicable only for Cisco N540-FH-CSR-SYS variants.
Table 2. Power Supply LED Descriptions
LED Color Status

STATUS

Green

Power Supply ON and operating normally.

Off

Not receiving power or PSU-12V fail or 3V3 STDBY failure.

Red

Power failure with one of the input power feeds failed or one of the on-board voltage rails has failed.

Amber

STDBY FPGA upgrade is in progress due to post Reload/Power cycle after HW FPD upgrade All.

Note

 
Upgrade of the STDBY FPGA takes three to five minutes.

Port LED

Table 3. Port LED

Port LED Color

Status

Off

Port is shut down or admin is down

Amber

Link is down

Green

Link is up

System Specifications

Certain troubleshooting aids of the Cisco N540-FH-CSR-SYS and Cisco N540-FH-AGG-SYS enable you to perform tasks that assist the troubleshooting process:

RJ-45 Connectors

The RJ-45 connector connects Category 3, Category 5, Category 5e, Category 6, or Category 6A foil twisted-pair or unshielded twisted-pair cable from the external network to the following module interface connectors:

  • Router chassis

    • CONSOLE port

    • MGMT ETH port

The following figure shows the RJ-45 connector.

Figure 1. RJ-45 Connector

GPS Port Pinouts

The platform is capable of receiving or sourcing GPS signals of 1 PPS & 10 MHz. Same 2 mini-coax 50-ohm connectors are used for output and input.

This table below summarizes the GPS port pinouts:

Table 4. GPS Port Pinouts

10 MHz (Input and Output)

1PPS (Input and Output)

Waveform

Input—Sine wave

Output—Square wave

Input—Rectangular pulse

Output—Rectangular pulse

Amplitude

Input— > 1.7 volt p-p(+8 to +10 dBm)

Output— > 2.4 volts TTL compatible

Input— > 2.4 volts TTL compatible

Output— > 2.4 volts TTL compatible

Impedance

50 ohms

50 ohms

Pulse Width

50% duty cycle

50% duty cycle

Rise Time

Input—AC coupled

Output—5 nanoseconds

40 nanoseconds

Time-of-Day Port Pinouts

This table summarizes the ToD/1-PPS port pinouts:

Table 5. RJ-45 ToD/1-PPS Port Pinouts

Pin

Signal Name

Direction

Description

1

–

–

–

2

–

–

–

3

1PPS_N

Output or Input

1PPS RS422 signal

4

GND

–

–

5

GND

–

–

6

1PPS_P

Output or Input

1PPS RS422 signal

7

TOD_N

Output or Input

Time-of-Day character

8

TOD_P

Output or Input

Time-of-Day character

BITS Interface

This table summarizes the BITS interface RJ48 port pinouts:

Table 6. BITS Interface RJ48 Port Pinouts

Pin

Signal Name

Direction

Description

1

RX Ring

Input

Receive Ring

2

RX TIP

Input

Receive TIP (T1/E1)

3, 6, 7, 8

—

NC

—

4

TX Ring

Output

Transmit Ring

5

TX TIP

Output

Transmit TIP (T1/E1)

Management Ethernet Port Pinouts

This following table summarizes the Management Ethernet port pinouts:

Table 7. Management Ethernet Port Pinouts

Pin

Signal Name

1

TRP0+

2

TRP0-

3

TRP1+

4

TRP2+

5

TRP2-

6

TRP1-

7

TRP3+

8

TRP3-

USB Port Pinouts

This following table summarizes the USB port pinouts:

Table 8. USB Port Pinouts

Pin

Signal Name

Description

A1

Vcc

+5 VDC

A2

D-

Data -

A3

D+

Data +

A4

Gnd

Ground

Alarm Port Pinouts

This following table summarizes the external alarm input pinouts:

Table 9. External Alarm Input Pinouts

Pin

Signal Name

Description

1

ALARM0_IN

Alarm input 0

2

ALARM1_IN

Alarm input 1

3

—

—

4

ALARM2_IN

Alarm input 2

5

ALARM3_IN

Alarm input 3

6

—

—

7

—

—

8

ALARM_IN_COMMON

Alarm Input Common

Console Port Pinouts

This following table summarizes the Console port pinouts:

Table 10. Console Port Pinouts

Pin

Signal Name

Direction

Description

1

ACONS-TX

Output

Aux Consoles transmit output, RS232

2

NC

NA

NA

3

CONS-TX

Output

Console RS232 transmit

4

Gnd

NA

Ground

5

Gnd

NA

Ground

6

CONS-RX

Input

Console RS232 receive

7

ACONS-RTX

Input

Aux Consoles receive input, RS232

8

NC

NA

NA