SFP-H25G-CU1.5M= 25G Copper Direct Attach Cab
The SFP-H25G-CU1.5M= is a Cisco-certified 2...
Hardware Architecture & Forwarding Capabilities
The Cisco NCS1001-K9= is a 2RU fixed-configuration router optimized for service provider edge and aggregation layers, leveraging Cisco’s Quantum Flow Processor (QFP) to deliver 400 Gbps system throughput. Key hardware specifications include:
- 16x 100G QSFP28 ports with backward compatibility for 40G/10G via breakout cables
- Dual 2200W AC/DC-HVDC power supplies (94% efficiency, NEBS Level 3 compliant)
- 128GB DDR4 ECC memory for control plane operations and route table storage
- MACsec-256 encryption with <200ns latency overhead on all data ports
The router’s adaptive cooling system maintains full throughput at 55°C ambient temperature, validated through GR-63-CORE Zone 4 seismic testing.
IOS XR 7.6.2 Feature Implementation
Critical software capabilities include:
router isis CORE
net 49.0001.0000.0000.0001.00
address-family ipv4 unicast
metric-style wide
segment-routing mpls Operational highlights:
- Segment Routing-MPLS with 10,000+ label-switched paths (LSPs)
- EVPN-VPWS for 5G xHaul transport (RFC 8214 compliance)
- Precision Time Protocol (PTP) boundary clock (±50ns accuracy)
- Hierarchical QoS with 8-level scheduling for SLA enforcement
Service Provider Deployment Scenarios
5G Mobile Backhaul Aggregation
A European Tier 1 operator reduced latency variation from 450μs to 85μs using:
hw-module profile qos deterministic-ethernet
network-clock synchronization frequency sync This configuration supported 8,000 small cells with 99.999% timing availability.
Metro Ethernet Service Delivery
By implementing EVPN All-Active Multi-Homing, a regional ISP achieved 50ms failover for 10G E-LINE services:
evpn ethernet-segment 1
interface Bundle-Ether1
redundancy all-active Comparative Analysis: NCS1001-K9= vs NCS1002-K9=
| Metric | NCS1001-K9= | NCS1002-K9= |
|---|---|---|
| Port Density | 16x100G | 32x100G |
| Buffer per Port | 12MB | 24MB |
| BGP Routes | 2M IPv4 | 4M IPv4 |
| Power per 100G | 9.8W | 7.2W |
| MACsec Throughput | 95% line rate | 97% line rate |
Operational Challenges & Mitigations
Thermal Management requires strict adherence to:
hw-module environment temperature threshold yellow 50
hw-module environment airflow front-to-back Lab tests showed 12% packet loss at 60°C without active airflow control.
Software Limitations in IOS XR 7.6.2:
- No native support for 400G ZR/ZR+ optics
- Maximum 1,000 EVPN instances per chassis
For validated deployment guides and bulk procurement, visit “NCS1001-K9=” link.
Field Implementation Insights
In three tier-3 ISP deployments, the NCS1001-K9= demonstrated exceptional stability during BGP route storms – processing 450K updates/sec without exceeding 65% CPU utilization. However, its lack of native 25G breakout support forced operators to use external multiplexers for cell site connectivity, adding 0.8μs latency per hop.
One notable challenge emerged in coastal environments: salt mist corrosion on QSFP28 connectors caused 18% CRC error spikes until quarterly cleaning protocols were implemented. For carriers modernizing aggregation layers with 5-7 year roadmaps, this router strikes an optimal balance between cost and performance – provided teams undergo Cisco’s 40-hour SR-MPLS certification program to fully leverage its capabilities.
The true litmus test occurred during a major peering session leak: the router’s 128GB memory absorbed 1.2M unexpected BGP routes while maintaining 100G line rate on critical services. This resilience makes it a cornerstone for operators transitioning from MPLS-TE to segment routing architectures.