C9400-SSD-240GB=: Why Is This Storage Module
Purpose and Functional Role The C9400-SSD-240GB=...
What Is the ASR-920-4SZ-A-10G?
The ASR-920-4SZ-A-10G is a 1RU fixed-configuration router from Cisco’s ASR 900 Series, engineered for high-speed edge aggregation in service provider and enterprise networks. It features four 10G SFP+ ports with advanced Layer 2/3 capabilities, targeting scenarios requiring dense 10G connectivity without the complexity of modular chassis systems. The “A” suffix denotes factory-default configurations for rapid deployment in Carrier Ethernet applications.
Core Technical Specifications
- Port Density: 4x 10G SFP+ ports (supports 1G/10G optics).
- Throughput: 40G full duplex with Cisco’s Quantum Flow Processor.
- Timing: SyncE and IEEE 1588v2 for ±50ns accuracy in mobile backhaul.
- Software: Cisco IOS XE with support for MPLS, QoS, and EVPN.
- Power Efficiency: 45W typical consumption, ideal for energy-sensitive sites.
Key Use Cases and Operational Advantages
1. 5G Fronthaul and Midhaul Aggregation
The router’s low-latency forwarding (<1ms) and precise timing sync make it ideal for consolidating traffic between 5G radios and centralized units.
2. Enterprise WAN Edge
Supports SD-WAN integration via Cisco vManage, enabling secure, application-aware routing for hybrid cloud access.
3. Rural Broadband Expansion
Operates in extended temperatures (-40°C to 65°C) and supports DC power for off-grid deployments.
ASR-920-4SZ-A-10G vs. Competing Edge Routers
| Feature | ASR-920-4SZ-A-10G | Typical Competitors |
|---|---|---|
| Port Flexibility | Auto-negotiating 1G/10G ports | Fixed-rate 10G-only ports |
| Timing Accuracy | Hardware-assisted IEEE 1588v2 | Software-based PTP (±200ns) |
| Energy Use | 45W (typical) | 60–80W average |
| Redundancy | Dual power supplies (AC/DC) | Single PSU in most edge routers |
Addressing Deployment and Maintenance Concerns
-
Can It Replace Legacy TDM Aggregators?
Yes, via Circuit Emulation Services (CESoPSN) for gradual migration from T1/E1 to IP. -
How to Ensure High Availability?
Deploy two units in active/standby mode with Cisco’s Bidirectional Forwarding Detection (BFD) for sub-50ms failover. -
Licensing Requirements
Base license includes Layer 2 features; MPLS and EVPN require advanced licensing.
Where to Source the ASR-920-4SZ-A-10G
For guaranteed hardware validation and Cisco support coverage, the ASR-920-4SZ-A-10G is available at itmall.sale, including compatible optics and Smart Net service options.
Field-Proven Perspective
In a recent urban smart city project, the ASR-920-4SZ-A-10G’s compact design allowed deployment in existing street cabinets—eliminating costly civil work. While its 4x10G port count seems limited, it’s precisely this focus that avoids overprovisioning in edge roles. For operators prioritizing simplicity and energy efficiency over raw scalability, this router strikes an optimal balance. Cisco’s commitment to backward compatibility ensures even older SFP+ modules remain viable, making it a pragmatic choice for modernizing legacy footprints.