Core Role and Design Overview

The ​​ASR-9922-AC=​​ is a ​​high-capacity AC power supply module​​ designed for Cisco’s ASR 9922 Router, delivering reliable power to support high-density routing in demanding environments. Built for ​​N+N redundancy​​, it ensures uninterrupted operation in service provider networks and large-scale data centers where power stability is non-negotiable.

Technical Specifications and Operational Efficiency

Power Delivery and Redundancy

• ​​Output Capacity​​: 3000W continuous power with 94% efficiency, certified for 200–240V AC input.
• ​​Hot-Swappable Design​​: Enables replacement without shutting down the chassis, critical for 24/7 uptime.
• ​​Environmental Resilience​​: Operates in temperatures from -40°F to 149°F (-40°C to 65°C), suitable for harsh edge deployments.

​​Key applications​​ include:

• Powering 400G line cards in hyperscale core networks.
• Supporting redundant configurations in Tier-1 ISP backbone routers.
• Ensuring compliance with ENERGY STAR® and 80 PLUS Platinum standards.

Compatibility and Integration

The ASR-9922-AC= is engineered exclusively for the ​​Cisco ASR 9922 chassis​​, slotting into one of four available power bays. It integrates with Cisco IOS XR’s ​​Power Management Controller (PMC)​​, enabling real-time load balancing and predictive failure analysis.

Addressing Common Deployment Questions

How Many Power Supplies Are Needed for Full Redundancy?

Two modules provide ​​N+1 redundancy​​; four are required for ​​full grid redundancy​​ in dual-fed power setups.

What Happens During a Power Surge or Failure?

The module features ​​active current limiting​​ and ​​isolation protection​​, diverting excess energy to ground. Neighboring units automatically compensate for failed supplies within milliseconds.

Can It Retrofit Older ASR 9922 Chassis?

Yes, but firmware must be updated to ​​IOS XR 7.5.2+​​ to leverage advanced telemetry like temperature-adjusted load sharing.

Procurement and Lifecycle Support

For verified inventory and technical specifications, visit the ASR-9922-AC= product listing. itmall.sale provides Cisco-certified modules with optional extended service plans covering firmware updates and priority replacement.

Operational Realities

In a decade of network engineering, I’ve seen power supplies treated as afterthoughts—until they fail. The ASR-9922-AC= challenges that mindset by being both a workhorse and a safeguard. Its ability to handle transient loads in 5G core networks is impressive, but its true value lies in letting engineers sleep soundly during storms, literal and metaphorical. For teams scaling terabit-capacity routers, this module isn’t optional—it’s insurance.