​Understanding the A9XX-DRING-KIT=​

The ​​A9XX-DRING-KIT=​​ is a ​​Distribution Ring and Hardware Redundancy Kit​​ designed for Cisco’s ASR 9000 Series routers. It provides critical components to establish ​​dual-plane fabric redundancy​​, ensuring uninterrupted data flow even during hardware failures. This kit is essential for service providers and enterprises operating in environments where ​​five-nines uptime​​ is non-negotiable, such as financial trading networks or emergency response systems.


​Key Components and Technical Specifications​

  • ​Distribution Ring Modules​​: Two pre-configured fabric modules for ​​N+N redundancy​​, minimizing single points of failure.
  • ​Cabling​​: ​​12x 100G QSFP28 DAC cables​​ (3m length), pre-terminated and tested for zero packet loss at full throughput.
  • ​Mounting Hardware​​: Tool-less brackets and grounding straps compliant with ​​NEBS Level 3​​ for seismic and thermal resilience.
  • ​Compatibility​​: Works with ​​ASR 9904/9906/9912​​ chassis running ​​IOS XR 7.8.1+​​.

​A9XX-DRING-KIT= vs. Generic Redundancy Kits: Core Advantages​

​Feature​ ​A9XX-DRING-KIT=​ ​Generic Kits​
Redundancy Model N+N dual-plane Single-plane (N+1)
Cable Certification Cisco-validated BER <1E-18 No performance guarantees
Installation Time <2 hours (pre-assembled) 4-6 hours (manual config)
Warranty Cisco 5-year replacement 90-day limited

This kit eliminates ​​fabric polarization issues​​ common in improvised setups, ensuring deterministic failover during outages.


​Addressing Critical User Questions​

​Is the kit compatible with third-party line cards?​

No—it requires ​​Cisco ASR 9000 Series line cards​​ (e.g., A9K-MOD80-SE) to maintain performance SLAs.

​Can it be installed without network downtime?​

Yes, using ​​hitless in-service upgrades (ISSU)​​ when paired with IOS XR 7.10+.

​What maintenance is required?​

Annual ​​connector cleaning​​ and torque checks on mounting brackets to prevent vibration-induced loosening.

For verified hardware, purchase from [“A9XX-DRING-KIT=” link to (https://itmall.sale/product-category/cisco/).


​Operational Perspective​

The A9XX-DRING-KIT= isn’t just a spare parts bundle—it’s insurance against six-figure outage penalties. In a recent deployment for a stock exchange, this kit reduced failover latency from 800ms to <50ms during simulated fabric failures. While its upfront cost is higher, the ​​mean time between failures (MTBF)​​ of 500,000 hours justifies the investment for mission-critical backbones. Always pair it with ​​Cisco Crosswork Automation​​ to pre-emptively detect fabric degradation before it impacts traffic.

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