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Overview of the ASR-920-12SZ-D
The ASR-920-12SZ-D is a 1RU compact aggregation router from Cisco’s ASR 900 Series, engineered for high-density service provider edge deployments. Combining 10G/1G port flexibility with carrier-class Ethernet capabilities, it bridges the gap between legacy infrastructure and modern IP/MPLS networks.
Key specifications:
- Port density: 12x SFP/SFP+ slots (supports 1G/10G optics)
- Throughput: Up to 40 Gbps system capacity
- Power efficiency: 85W typical consumption with DC power input
Core Advantages for Edge and Mobile Backhaul
The ASR-920-12SZ-D addresses critical challenges in edge networking:
- 5G readiness: Supports precision timing (PTP/IEEE 1588v2) for low-latency 5G fronthaul/backhaul.
- Layer 2/Layer 3 unification: Runs Ethernet, MPLS, and BGP concurrently, reducing the need for separate devices.
- Extended environmental tolerance: Operates in –40°C to 65°C, ideal for unregulated telecom cabinets.
Addressing Key Deployment Concerns
“Can it replace legacy TDM equipment?”
Yes. With pseudowire emulation, the router integrates TDM circuits (E1/T1) into IP/MPLS networks, enabling phased migration.
“Is it scalable for future 25G/100G upgrades?”
While the chassis maxes at 10G per port, Cisco’s Network Convergence System (NCS) offers a seamless upgrade path for higher speeds.
“How does it handle network congestion?”
The router employs hierarchical quality of service (HQoS) to prioritize mission-critical traffic like VoIP or video streaming.
Sourcing the ASR-920-12SZ-D
For carriers modernizing their edge infrastructure, the ASR-920-12SZ-D is available through itmall.sale, a certified Cisco partner offering genuine hardware with lifecycle support.
Field Perspective
In a recent rural broadband project, deploying six ASR-920-12SZ-D routers reduced latency spikes by 65% compared to older platforms. While its 10G limit may deter hyperscale operators, its blend of ruggedness and protocol agility makes it indispensable for regional providers balancing cost and performance—a niche where bulkier routers often falter.