Description
The Cisco ASR 920 Series Aggregation Services Router is a family of modular and fixed configuration routers that enables Service Providers to provide business, residential, and mobile access services to their users. It is the Carrier Ethernet access platform providing Ethernet services.
The Cisco ASR 920 Series Routers family complement and extend Cisco’s current and planned Carrier Ethernet routing portfolio providing a cost optimized, and extended temperature range access platform.
Cisco ASR 920 Series Routers Features
The Cisco ASR 920 Series Routers family includes:
-
ASR 920-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 slot for modular interface card and redundant modular power supplies (AC/DC). The interface modules from ASR 900 family of routers can be leveraged for use with this model.
-
ASR 920-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/DC).
The following table provides a snapshot of the number and type of supported ports:
|
ASR 920 Sub-family |
1 GE Port |
10 GE Port |
Type of 1 GE Port |
Type of 10 GE Port |
Timing Ports |
|---|---|---|---|---|---|
|
ASR-920-24SZ-IM |
24 |
4 |
24 Fiber |
Built in 4 SFP+ |
ToD and BITSGPS 1 PPS and GPS 10 MHz |
|
ASR-920-24SZ-M/ASR-920-24TZ-M |
24 |
4 |
24 Fiber 24 Copper |
Built in 4 SFP+ |
NA |
 Note |
Due to EMC restrictions, only a maximum of 8 DS1 TPoP is supported out of the 12 ports on the top row (1–23) of the router. |
GigabitEthernet Copper Ports
Fixed copper GigabitEthernet (GE) interfaces are provided through standard RJ-45 connectors. These ports support the following features:
- Standard 10/100/1000Base-T/TX operation with forced or auto-negotiation for speed and duplex.
- Automatic crossover (auto-MDIX) for straight-through and crossover connections.
- Pause flow control as defined by the 802.3x standard.
- Frame size of 9216 bytes.
- Synchronous ENET operation that provides its recovered receive clock as an input clock source for the SETS as well as uses the system-wide reference clock to derive its transmit clock.
GE SFP Ports
The GE SFP ports support the following features:
- 100Base-FX and 1000Base-X SFP modules.
- Copper SFP modules
- Digital optical monitoring as specified by the SFP.
- Any mix of SFPs is supported unless specifically noted.
- Pause flow control as defined by the 802.3x standard.
- Frame size of 9216 bytes.
- Synchronous ENET operation that provides its recovered receive clock as an input clock source for the SETS as well as uses the system-wide reference clock to derive its transmit clock.
| Note |
Copper based SFPs do not support synchronous ENET operations. |
SFP+ Ports
The SFP+ ports support the following features:
- Digital optical monitoring as specified by the optical transceiver module.
- Any mix of SFPs is supported unless specifically noted.
- Pause flow control as defined by the 802.3x standard.
- Frame size of 9216 bytes.
