Core Functionality and Target Use Cases

The ​​ASR-9922-LS-BUN​​ is a ​​high-performance line card and bundle​​ for Cisco’s ASR 9922 Router, engineered to address bandwidth-intensive applications in service provider and hyperscale data center networks. It supports ​​400G/200G/100G interfaces​​ with deep buffering, making it ideal for environments prioritizing ​​low-latency packet forwarding​​ and ​​traffic engineering​​.

Technical Specifications and Performance Insights

Throughput and Scalability

• ​​Per-Slot Capacity​​: 4.8 Tbps, doubling the throughput of the ASR-9910-LS-BUN.
• ​​Buffer Management​​: 24 GB of shared memory per card to handle microbursts in 5G backhaul and financial trading networks.
• ​​Energy Efficiency​​: Consumes 18% less power per gigabit than previous-generation line cards, thanks to Cisco’s ​​Quantum Flow Processor V2​​.

​​Primary deployments​​ include:

• Core aggregation for terabit-scale metro networks.
• Cloud interconnect solutions requiring segment routing (SR-MPLS or SRv6).
• High-frequency trading infrastructures demanding deterministic latency under 1µs.

Compatibility and Integration Challenges

The ASR-9922-LS-BUN is designed for the ​​Cisco ASR 9922 chassis​​ and requires ​​IOS XR 7.7.1+​​ for full feature activation, including ​​Flexible Algorithm​​ and ​​Bidirectional Forwarding Detection (BFD)​​. While backward-compatible with earlier ASR 9000 series chassis, its 400G interfaces operate at reduced capacity in non-9922 systems.

Addressing Critical Deployment Concerns

How Does It Mitigate Packet Loss in Congested Networks?

The card employs ​​Dynamic Buffer Allocation (DBA)​​, adjusting memory resources per port based on real-time traffic patterns. Combined with ​​Cisco QoS Hierarchical Queuing Framework​​, it ensures mission-critical traffic (e.g., VoIP, IoT control signals) is prioritized during congestion.

Is the ASR-9922-LS-BUN Future-Proof for Emerging Protocols?

Yes. It supports ​​800G readiness​​ via breakout cables and is software-upgradable to accommodate emerging standards like ​​OpenZR+ coherent optics​​. Cisco’s ​​Crosswork Automation Suite​​ integration further simplifies protocol migration.

What Redundancy Features Are Available?

• ​​Hitless In-Service Upgrades (ISSU)​​ for zero-downtime software updates.
• ​​Graceful Insertion and Removal (GIR)​​, allowing maintenance without disrupting adjacent line cards.
• ​​Forward Error Correction (FEC)​​ on all interfaces to reduce retransmissions.

Procurement and Lifecycle Considerations

For verified pricing and availability, refer to the ASR-9922-LS-BUN product details. itmall.sale provides genuine Cisco hardware with optional Smart Net Total Care® integration for proactive monitoring.

Operational Realities from the Field

Having deployed ASR-9922 systems in carrier-grade networks, the LS-BUN’s value isn’t just raw speed—it’s the ​​operational agility​​ it unlocks. While the upfront investment is steep, the reduction in rack space, power, and troubleshooting overhead often justifies the cost within 12–18 months. For teams managing volatile traffic growth, this line card isn’t a luxury; it’s the difference between scaling confidently and scrambling nightly for buffer optimizations.