What Is the ASR-9922-DC?

The ​​ASR-9922-DC​​ is a high-capacity DC power supply module engineered for Cisco’s ASR 9922 router, a cornerstone of modern service provider and hyperscale data center networks. Designed for environments requiring ​​ultra-reliable, high-wattage power delivery​​, this module supports the router’s 400G/1T line cards and compute-intensive workloads without compromising stability.


Technical Innovations and Performance

  • ​96% efficiency rating​​: Minimizes energy waste in 24/7 operational settings, reducing cooling costs by up to 25%.
  • ​Modular scalability​​: Supports ​​N+N redundancy​​ with hot-swappable units, ensuring zero downtime during maintenance or failures.
  • ​Dynamic load balancing​​: Automatically redistributes power across chassis slots to prevent overloads during peak traffic.

ASR-9922-DC vs AC Power: Key Comparisons

​Factor​ ​ASR-9922-DC​ ​AC Power Solutions​
​Optimal Use Case​ Telecom DC grids, battery-backed facilities General enterprise AC grids
​Efficiency at Full Load​ 96% 88-90%
​Surge Protection​ Built-in transient voltage suppression Often requires external PDUs

Addressing Critical User Questions

​Q: Can the ASR-9922-DC integrate with legacy DC power systems?​
Yes. It operates on ​​-48V DC standards​​, common in telecom central offices, and includes backward-compatible connectors for seamless upgrades.


​Q: How does it handle simultaneous high-density line card deployments?​
The module’s ​​2.5 kW per-slot capacity​​ and intelligent load management prevent throttling, even when all 22 chassis slots host power-hungry 1T interfaces.


​Q: What certifications does it hold for data center deployments?​
The ASR-9922-DC meets ​​NEBS Level 3​​, ​​ETSI​​, and ​​ASHRAE Class A4​​ standards, ensuring compliance in demanding environments.


Why This Module Is a Game-Changer

  • ​Future-proof power​​: Prepares networks for terabit-scale traffic growth without retrofitting infrastructure.
  • ​Cost efficiency​​: Slashes operational expenses through reduced energy consumption and cooling needs.
  • ​Risk mitigation​​: Dual-input design and surge protection guard against grid instability, a common pain point in emerging markets.

For technical specifications and purchasing details, visit the ASR-9922-DC product listing.


Final Thoughts

In my experience overseeing data center expansions, power infrastructure is often the silent bottleneck. The ASR-9922-DC isn’t just another component—it’s the ​​backbone of scalability​​ for networks pushing the limits of speed and density. While AC modules suffice for standard setups, the ASR-9922-DC’s brute-force efficiency and failover resilience make it unmatched for operators who can’t afford even a millisecond of downtime. If your roadmap includes terabit interfaces or AI-driven traffic spikes, this module isn’t optional; it’s your insurance policy against obsolescence.

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