Getting Started With the Cisco ASR 920 Series Router

This chapter covers the following topics:

Overview

Cisco ASR 920 families of routers include :

  • ASR 920-I (Indoor) [ASR-920-12CZ-A/ASR-920-12CZ-D]—This sub-family has fixed ENET interfaces (12 x 1 GE + 2 x 10GE) and dual power supplies (AC or DC).

  • ASR 920-C (Compact) [ASR-920-4SZ-A/ASR-920-4SZ-D]—This sub-family of routers have a compact form factor and configurable ports: 4 x 1 GE or 4 x 10 GE or any combinations of 1 GE and 10 GE among the four ports available. In addition, there are 2 x 1 GE copper ports available.

  • ASR 920-O (Outdoor) [ASR-920-10SZ-PD]—This sub-family is designed for deployment outdoors in an environment that is protected from rain and direct sunlight and provides cost optimized, and extended temperature range for business, residential, and mobile access services.

  • ASR 920-F (Fixed) [ASR-920-24SZ-M/ASR-920-24TZ-M]—This sub-family with 1 RU form factor has fixed ENET interfaces (four 10GE and twenty-four 1GE Copper or SFP) and redundant modular power supplies (AC or DC).

  • ASR 920-M (Modular) [ASR-920-24SZ-IM]—This sub-family with 1.5 RU form factor has fixed ENET interfaces (four 10GE and twenty-four 1GE Fiber), one modular interface, and redundant modular power supplies (AC or DC). The interface modules from ASR 900 family of routers can be leveraged for use with this model.

  • ASR-920-12SZ-IM—Eight 1G copper ports, four SFP ports, and four 1G/10G Dual Rate ports one IM slot Power over Ethernet (PoE), and a global navigation satellite system (GNSS) port, with redundant AC or DC power supplies.

  • ASR-920-12SZ-A/Cisco ASR-920-12SZ-D—This sub-family with 1 RU form factor has a single AC or DC fixed power supply with 12 (10G SFP+/1G SFP dual rate port) interfaces, Timing (1PPS/10MHz/ToD) interfaces, and a pluggable GNSS module.

  • ASR-920-20SZ-M—This sub-family with 1 RU form factor has fixed ENET interfaces (four 10GE and twenty-four 1GE with four Copper ports) and redundant modular power supplies (AC or DC).

In addition to the 1G/10G interfaces, the Cisco ASR 920 Series Routers also have the following hardware interfaces for management, and timing and synchronization features:

  • One Copper 10/100/1000Base-T LAN management port

  • One BITS interface with RJ48 Connector

  • One 1PPS or Time of Day port with RJ45 interface

  • External Alarm interface with 4 Dry Contact Alarm inputs

  • One RS-232 Console Port with USB A type connector


Note

Due to the USB form factor, the flow control pins are not connected and the terminal server hosting the RS232 session must configure no flow-control or the console access to work correctly.
  • One USB2.0 Console Port

  • One USB2.0 Port for Mass Storage

  • ZTP button for Zero Touch Provisioning


Caution

A short press of the ZTP button starts the provisioning of the router. Pressing this button for 8 seconds or more leads to Powering off the System Power.
  • Various LEDs for system and interface status

  • The Cisco ASR-920-12SZ-IM Router also supports:

    • Power over Ethernet (PoE) port

    • Global navigation satellite system (GNSS) port

For more information, see the various Cisco ASR920 Series Routers hardware installation guides at http://www.cisco.com/c/en/us/support/routers/asr-920-series-aggregation-services-router/products-installation-guides-list.html.

All variants of the Cisco ASR 920 Series Router have 8MB of NOR flash, and 4GB of DRAM.

Table 1. Feature Comparison for Cisco ASR 920 Series Routers

Feature/Functionality

ASR-920-12CZ-A/D

ASR-920-4SZ-A/D

ASR-920-10SZ-PD

ASR-920-24SZ-M

ASR-920-24TZ-M

ASR-920-24SZ-IM

ASR-920-12SZ-IM

Cisco ASR-920-12SZ-A/Cisco ASR-920-12SZ-D

Cisco ASR-920-20SZ-M

CPU operating at

P2020—1GHz

P2020—1GHz

P2020—1GHz

P2020—1.2GHz

P2020—1.2GHz

P2020—1.2GHz

T1042—1.2GHz

T1042—1.2GHz

P2020—1.2GHz

DRAM

4GB

4GB

4GB

4GB

4GB

4GB

4GB

4GB

4GB

SD FLASH

2GB

2GB

2GB

2GB

2GB

2GB

4GB

4GB

2GB

1G-10G Dual Rate Ports

Supported

Supported

Supported

Not Supported

Not Supported

Not Supported

Supported

Supported

Not Supported

BITS interface

Present

Present

Not Present

Not Present

Not Present

Present

Not Present

Present

Not Present

Time of Day port

Present

Present

Not Present

Not Present

Not Present

Present

Present

Present

Not Present

Auto-Media-Select Combo Port

Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Copper Ports

Supported

Supported

Supported

Not Supported

Supported

Supported

Supported

Not Supported

Supported

SFP Ports

Supported

Supported

Supported

Supported

Not Supported

Supported

Supported

Supported

Supported

Smart SFP

Supported

Supported

Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

SFP+ Ports

Supported

Supported

Supported

Supported

Supported

Supported

Supported

Supported

Supported

Copper SFP

Supported

Supported

Supported

Supported

Not Supported

Supported

Supported

Not Supported

Supported

XFP Ports

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Supported

Supported

Not Supported

Not Supported

ZTP Button

Supported

Supported

Supported

Not Supported

Not Supported

Not Supported

Supported

Supported

Not Supported

PoE

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Supported

Not Supported

Not Supported

GNSS

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Supported

Supported

Not Supported

Restrictions

  • The Cisco ASR 920 Series Routers do not support the hw-module slot/subslot reload command.

Interface Naming

The following table shows the interface naming of the Cisco ASR-920-12CZ-A/ASR-920-12CZ-D ports:

1G SFP Only

1G Combo Port

10G SFP+/1G SFP1

1

3

5

7

9

11

5X

7X

9X

11X

13

0

2

4

6

8

10

4X

6X

8X

10X

12

1 Ports 12 and 13 when operating in 1G Mode is operationally up only when the peer connecting interfaces are in Auto negotiation mode.
  • Interfaces 0–3 are Gigabit Ethernet SFP only ports.

  • Interfaces 4X–11X-Gigabit Ethernet are combo ports that support dual media—Copper and SFP. For more information, see the Configuring Auto Media Sense on Cisco ASR 920 Series Routers.

  • Interfaces 0 to 11 are referred to as Gigabit Ethernet 0/0/0–GigabitEthernet 0/0/11 respectively.

  • Interfaces 12 and 13 are dual rate ports. These ports support 1G or 10G mode depending on the optics (SFP or SFP+ respectively) installed in these ports.


Note

Dual-Rate functionality is supported only with the Supported SFPs, listed in the Cisco ASR 920 Series Aggregation Services Router Hardware Installation Guide.
  • Interfaces 12 and 13 are TenGigibitEthernet 0/0/12–TenGigabitEthernet 0/0/13. The interface name remains unchanged even if an SFP is installed in the port and the port is operating in 1G mode.

  • Out of Band Management Network port is referred as interface Gig0.

The following table shows the interface naming of the Cisco ASR920-4SZ-A/ASR920-4SZ-D ports:

1G Cu Port

10G SFP+/1GSFP2

1

3

5

0

2

4

2 Ports 2, 3, 4, and 5 when operating in 1G Mode is operationally up only when the peer connecting interfaces are in Auto negotiation mode.
  • Interfaces 0–1 are Copper only ports with RJ45 connector.

  • Interfaces 0 and 1are referred to as Gigabit Ethernet 0/0/0–GigabitEthernet 0/0/1 respectively.

  • Interfaces 2 to 5 are dual rate ports. These ports support 1G or 10G mode depending on the optics (SFP or SFP+ respectively) installed in these ports.


Note

Dual-Rate functionality is supported only with the Supported SFPs, listed in the Cisco ASR 920 Series Aggregation Services Router Hardware Installation Guide.
  • Interfaces 2 to 5 are named as TenGigibitEthernet 0/0/2–TenGigabitEthernet 0/0/5 respectively. The interface name remains unchanged even if an SFP is installed in the port and the port is operating in 1G mode.

  • Out of Band Management Network port is referred as interface Gig0.

The following table shows the interface naming of the Cisco ASR-920-10SZ-PD ports:

1G Cu

1G SFP

10G SFP+

1

-

-

-

-

-

-

-

-

-

-

0

2

3

4

5

6

7

8

9

10

11

  • Interfaces 0–1 are Copper only ports with RJ45 connector.

  • Interfaces 2-9 are Gigabit Ethernet SFP ports.

  • Interfaces 10-11 are 10-Gigabit Ethernet SFP+ ports that support 10G mode.

The following table shows the interface naming of the Cisco ASR-920-24SZ-IM, Cisco ASR-920-24SZ-M, ASR-920-24TZ-M ports:

IM Slots (for Cisco ASR-920-24SZ-IM only)

1G SFP/Cu3

10G SFP+

1

3

5

7

9

11

13

15

17

19

21

23

25

27

0

2

4

6

8

10

12

14

16

18

20

22

24

26

3 Ports 0 -23 are Copper ports for ASR-920-24TZ-M
  • Interfaces 0–23 are Gigabit Ethernet SFP ports for ASR-920-24SZ-IM, ASR-920-24SZ-M, and Copper port for ASR-920-24TZ-M.

  • Interfaces 24-27 are 10-Gigabit Ethernet SFP+ ports that support 10G mode.

The following table shows the interface naming of the Cisco ASR-920-12SZ-IM:

10G/1G SFP

1G SFP

1G Cu

7

5

3

1

15

14

13

12

11

10

9

8

6

4

2

0

The following table shows the interface naming of the Cisco ASR-920-12SZ-A/Cisco ASR-920-12SZ-D ports:

10G SFP+/1G SFP

1

3

5

7

9

11

0

2

4

6

8

10

  • Interfaces 0–11 are dual rate ports. These ports support 1G or 10G mode depending on the optics (SFP or SFP+ respectively) installed in these ports.

The following table shows the interface naming of the Cisco ASR-920-20SZ-M ports:

1G Cu port

1G SFP port

10G SFP port

1

3

5

7

9

11

13

15

17

19

21

23

25

27

0

2

4

6

8

10

12

14

16

18

20

22

24

26

  • Interfaces 0–3 are Copper only ports with RJ45 connector.

  • Interfaces 4-23 are Gigabit Ethernet SFP ports.

  • Interfaces 24-27 are 10-Gigabit Ethernet SFP+ ports that support 10G mode.

All Interfaces with CU SFP, flap twice during router boot up. This behaviour is applicable to the following variants that support CU SFP:
  • ASR-920-12CZ-A/D

  • ASR-920-4SZ-A/D

  • ASR-920-10SZ-PD

  • ASR-920-24SZ-M

  • ASR-920-24SZ-IM

  • ASR-920-12SZ-IM

  • ASR-920-20SZ-M

Interface Speed Based on Port Type

The following table shows the interface speed of the Cisco ASR-920-12SZ-A/Cisco ASR-920-12SZ-D:

Category

Cu Ports

SFP ports (With Fiber SFP plugged in)

SFP ports (With Copper SFP plugged in)

SFP+

Speed

10M

100M

1G

10M

100M

1G

10M

100M

1G

10G

10G Dual rate ports

NA

NA

NA

NA

NA

Yes

Not Supported

Not Supported

No

Yes

The following table shows the interface speed of the Cisco ASR-920-20SZ-M:

Category

Cu Ports

SFP ports (With Fiber SFP plugged in)

SFP ports (With Copper SFP plugged in)

SFP+

Speed

10M

100M

1G

10M

100M

1G

10M

100M

1G

10G

1G Copper /SFP ports

Yes

Yes

Yes

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Not Supported

Yes

10G Dual rate ports

NA

NA

NA

NA

NA

NA

NA

Not Supported

Not Supported

Yes