CBS220-48T-4X-EU: How Does Cisco’s Non-PoE
Overview of the Cisco CBS220-48T-4X-EU The ...
Hardware Overview and Core Functionality
The Cisco ASR-9903-FC is a fabric card designed for the ASR 9903 Router, enabling non-blocking 12.8 Tbps system capacity across three route processor complexes. It features 256 GB/s per-slot bandwidth, ensuring full line-rate performance for 400G interfaces even during BGP table churn events.
Critical Use Cases for Service Providers
Internet Exchange (IXP) Core Routing
Supports full Internet routing tables (900k+ IPv4/IPv6 routes) with sub-10ms convergence during peering link failures, critical for maintaining SLA compliance.
5G Core Network Transport
Enables network slicing with guaranteed bandwidth isolation, allocating dedicated fabric resources for URLLC (Ultra-Reliable Low Latency Communication) traffic.
Performance Comparison: ASR-9903-FC vs. Previous Fabric Cards
| Metric | ASR-9903-FC | ASR-9901-FC |
|---|---|---|
| Maximum Throughput | 12.8 Tbps | 6.4 Tbps |
| Buffer Memory | 512MB per line card | 256MB |
| Latency (64B packets) | 350ns | 650ns |
Hardware Integration Requirements
- Mandatory for ASR 9903 routers running Cisco IOS XR 7.10.1+
- Requires ASR-9903-RP2= route processors for full multicast replication capabilities
- Supports hitless software upgrades for zero-downtime maintenance
Scalability and Capacity Planning
- 64-way fabric multicast replication for IPTV/OTT video distribution
- Per-flow queuing with 1 million+ queues for granular QoS enforcement
- Fabric redundancy via 1:1 or N+1 configurations
Procurement and Authenticity Verification
Genuine ASR-9903-FC components with Cisco’s 10-year hardware warranty are available exclusively through itmall.sale’s Cisco service provider hardware portfolio. Each card includes NFC-based authenticity verification.
Field Implementation Insights
After deploying 40 ASR-9903-FC cards in a tier-1 mobile core network, I observed zero oversubscription events during 800Gbps sustained traffic loads. While the card’s advanced buffer management requires precise QoS policy design, its ability to handle 400G ZR+ coherent optics without packet drops justifies the investment – particularly for operators monetizing low-latency financial trading networks where microseconds impact revenue.