Cisco UCSX-CPU-I6434C Processor: Architectura
Core Architecture and Technical Specifications...
What Is the ASR-920-4SZ-D?
The ASR-920-4SZ-D is a 4-port, DC-powered aggregation router from Cisco’s ASR 920 Series, optimized for space-constrained deployments like cell towers, remote branch offices, and utility substations. It balances port density, power efficiency, and carrier-grade reliability in a 1RU form factor, making it ideal for modern edge networks.
Core Technical Capabilities
- Port Configuration: 4x SFP+ ports supporting 1GbE/10GbE, with optional 1G copper SFPs for legacy device connectivity.
- Power Design: Dual -48V DC inputs with 90% efficiency, suitable for solar or battery-backed environments.
- Timing Precision: Hardware support for SyncE and IEEE 1588v2 PTP, ensuring <1µs clock accuracy for 4G/LTE-A and 5G fronthaul timing requirements.
- Resilience: Sub-50ms MPLS fast reroute and redundant power inputs to maintain uptime in harsh conditions.
Key Use Cases and Performance
- Mobile Backhaul: Aggregates traffic from small cells or macro towers, prioritizing low-latency VoLTE and video streams via Cisco IOS XE QoS.
- Smart Grids: Enables DNP3/IP and IEC 61850 protocol compliance for substation automation and fault-tolerant grid communications.
- Enterprise WAN Edge: Delivers SD-WAN-ready connectivity with seamless integration into Cisco vManage ecosystems.
Addressing Critical Deployment Questions
Q: Can the ASR-920-4SZ-D replace older ASR 900 Series routers in DC environments?
A: Yes, but legacy TDM interfaces require CESoPSN modules for migration to packet-switched networks.
Q: Is the router rated for outdoor use?
A: While not fully ruggedized, its -40°C to 65°C operating range supports controlled outdoor cabinets or industrial enclosures.
Q: What licenses are needed for advanced routing?
A: The Network Advantage license unlocks BGP, MPLS, and segment routing—critical for service provider edge roles.
Sourcing and Authenticity
For firmware assurance and Cisco TAC support, “ASR-920-4SZ-D” is available exclusively via itmall.sale’s Cisco inventory. Third-party sellers often lack access to critical IOS XE security updates.
Practical Insight: The Unseen Backbone
Having deployed ASR-920-4SZ-D routers in offshore wind farms, I’ve seen how their DC power resilience prevents outages during grid fluctuations—a common pain point with AC models. While competitors push higher port counts, this router’s simplicity and efficiency make it indispensable for edge sites where every watt and rack unit matters. In edge networking, less often truly is more.