Troubleshooting

This chapter provides information about troubleshooting issues, if any, on the Cisco ASR 920 Series Aggregation Services Router.

Pinouts

The sections describe the pinouts for the Cisco ASR 920 Series Router interfaces:

GPS Port Pinouts

The table below summarizes the GPS port pinouts.

Table 1. GPS Port Pinouts

10Mhz (input and output)

1PPS (input and output)

Waveform

Input—Sine wave

Output—Square wave

Input—Pulse

Output—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 percent duty cycle

26 microseconds

Rise Time

Input—AC coupled

Output—5 nanoseconds

40 nanoseconds

Time-of-Day Port Pinouts

The table below summarizes the ToD/1-PPS port pinouts.

Table 2. RJ-45 1PPS/ToD Port Pinouts

Pin

Signal Name

Direction

Description

1

V.11 Loopback

Output or Input

V.11 Loopback interface pins (Optional)

2

V.11 Loopback

Output or Input

V.11 Loopback interface pins (Optional)

3

1PPS_N

Output or Input

1PPS RS422 signal

4

GND

—

—

5

GND

—

—

6

1PPS_P

Input

1PPS RS422 signal

7

TOD_N

Output or Input

Time-of-Day character

8

TOD_P

Output or Input

Time-of-Day character

Use a 4-port EIA-232 DCE, 10 feet, Female DB-25, and CAB-HD4-232FC. Pinout of the DB25 connector to be connected to the RS232-to-RS422 converter.

Table 3. RS422 Pinout

Pin

Signal Name

Description

4

TXD+

RTS pin for RS232

20

TXD-

DTR pin for RS232

5

RXD+

CTS pin for RS232

6

RXD-

DSR pin for RS232

Alarm Port Pinouts

The table below summarizes the external alarm input pinouts.

Table 4. External Alarm Input Pinouts

Pin

Signal Name

Description

1

ALARM0_IN

Alarm input 0

2

ALARM1_IN

Alarm input 1

3

—

No connect

4

ALARM2_IN

Alarm input 2

5

ALARM3_IN

Alarm input 3

6

—

No connect

7

—

No connect

8

COMMON

Alarm common

Management GigabitEthernet Port Pinouts

The table below summarizes the Management GigabitEthernet port pinouts.

Table 5. Management Port Pinout

Pin

Signal Name

1

TRP0+

2

TRP0-

3

TRP1+

4

TRP2+

5

TRP2-

6

TRP1-

7

TRP3+

8

TRP3-

USB Console Port Pinouts

The table below summarizes the USB console port pinouts.

Table 6. Single USB Console Port Pinouts

Pin

Signal Name

Description

1

Vcc

+5VDC

2

D-

Data -

3

D+

Data +

4

Gnd

Ground


Note
The USB console port +5VDC is input, and operates as an USB peripheral device.

USB Flash or MEM Port Pinouts

The table below summarizes the USB flash or MEM port pinouts.

Table 7. Single USB Flash or MEM Port Pinouts

Pin

Signal Name

Description

1

Vcc

+5VDC

2

D-

Data -

3

D+

Data +

4

Gnd

Ground


Note
USB TYPE-A receptacle is used.

Note
The USB flash or MEM port +5VDC is output. This router provides power for USB flash or MEM port. This port operates as a USB host.

Optical Fiber Specifications

The specification for optical fiber transmission defines two types of fiber: single mode and multimode. Within the single-mode category, three transmission types are defined: short reach, intermediate reach, and long reach. Within the multimode category, only short reach is available. For information about optical SFP modules, see the documentation for the SFP module at: http://www.cisco.com/en/US/partner/products/hw/modules/ps5455/prod_installation_guides_list.html .

Alarm Conditions

The table below summarizes the meaning of the alarm conditions on the Cisco ASR 920 Series Router.

Table 8. Alarm Condition Summary

Alarm Type

Alarm Meaning

Critical

Port in down state.

Environmental sensor threshold exceeded critical level (voltage, temperature)

Major

Environmental sensor threshold exceeded major level (voltage, temperature)

Info

Port administratively shut down.

G.703/FXS/FXO Interface Module Pinout

Table 9. FXO RJ11 Pinout

Pin

Signal Name

Direction

Description

1

NC

-

-

2

Ring

Analog

Ring audio

3

Tip

Analog

Tip audio

4

NC

-

-
Table 10. FXS RJ45 Pinout

Pin

Signal Name

Direction

Description

1, 2, 3

NC

-

-

4

Ring

Analog

Ring audio

5

Tip

Analog

Tip audio

6, 7, 8

NC

-

-
Table 11. G.703 RJ48C Pinout

Pin

Signal Name

Direction

Description

1

Rx_Tip

Input

G.703 64 Kbps Co-Directional receive tip signal

2

Rx_Ring

Input

G.703 64 Kbps Co-Directional receive ring signal

3

NC

-

-

4

Tx_Tip

Output

G.703 64 Kbps Co-Directional transmit tip signal

5

Tx_Ring

Output

G.703 64 Kbps Co-Directional transmit ring signal

6, 7, 8

NC

-

-

LED Summary

The sections describe the meanings of the LEDs.

Power Supply LEDs

The table below summarizes the power supply LEDs for both the AC and DC power supplies.

Table 12. PSU LED Indication

Power LED

FAIL LED

Power Supply Condition

Green

Off

Power Supply ON; valid input/output

Yellow 1Hz blinking

Red 1Hz blinking

PSU Warning due to OCP, OTP, UV, OV, OP, abnormal fan operation

PSU continues to operate

Off

On

PSU failure due to OCP, OTP, UV, OV, OP, abnormal fan operation. No valid output.

Green 1Hz blinking

Off

Valid power present, shutdown by system.

Yellow

Off

Input voltage low

Off

Off

No valid power input.

Fan Tray LEDs

The table below summarizes the Fan Tray LEDs.

Table 13. Fan Tray LEDs

Color/State

Description

Off

System is not powered on

Green

All the fans are working normally

Red

Single or multiple fan failures and critical error