The Cisco A9K-MPA-1x40GE Modular Port Adapter is a high-performance 40-Gigabit Ethernet interface module engineered for Cisco ASR 9000 Series routers. Designed to meet the demands of modern service provider core, edge, and aggregation networks, this MPA delivers line-rate 40Gbps throughput, ultra-low latency, and seamless scalability for next-generation Ethernet services.
Equipped with one QSFP+ 40G Ethernet port, the A9K-MPA-1x40GE supports a wide range of Cisco-qualified QSFP+ transceivers, including 40GBASE-SR4 and 40GBASE-LR4, enabling flexible short- and long-reach deployments. When installed on MPA-capable line cards such as A9K-MOD80 and A9K-MOD160, it provides full Layer 2 and Layer 3 forwarding at wire speed.
Running on Cisco IOS XR, the adapter supports advanced service provider features including IPv4/IPv6 routing, MPLS, L2VPN, L3VPN, traffic engineering, and jumbo frames up to 9216 bytes, making it ideal for Metro Ethernet, data center interconnect (DCI), and backbone connectivity. Its hot-swappable design allows online insertion and removal without service disruption, ensuring high availability and operational efficiency.
With low power consumption and carrier-grade reliability, the Cisco A9K-MPA-1x40GE is a cost-effective and future-ready solution for organizations looking to expand high-speed Ethernet capacity within existing ASR 9000 infrastructures.
Product Specifications – Cisco ASR 9000 40-Gigabit Ethernet Modular Port Adapter (A9K-MPA-1x40GE)
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| Category |
Specification Details |
| Product Name |
Cisco A9K-MPA-1x40GE |
| Model Number |
A9K-MPA-1x40GE |
| Product Series |
Cisco ASR 9000 Series |
| Product Type |
Modular Port Adapter (MPA) |
| Target Deployment |
Service Provider Core, Edge, Aggregation |
| Port Configuration |
1 × 40-Gigabit Ethernet |
| Port Type |
QSFP+ |
| Connector Type |
Hot-swappable QSFP+ transceiver |
| Supported Optics |
40GBASE-SR4, 40GBASE-LR4, DAC/AOC (Cisco-qualified QSFP+) |
| Chassis Compatibility |
Cisco ASR 9000 Series Routers |
| Line Card Compatibility |
MPA-capable line cards (e.g., A9K-MOD80, A9K-MOD160) |
| Line-Rate Performance |
Yes – Full 40 Gbps throughput |
| Forwarding Support |
Layer 2 and Layer 3 |
| Latency |
Ultra-low latency (platform dependent) |
| Routing & Protocol Support |
IPv4, IPv6, MPLS, L2VPN, L3VPN, Traffic Engineering |
| Jumbo Frame Support |
Yes |
| Maximum MTU |
Up to 9,216 bytes |
| Hot-Swappable |
Yes (supports online insertion and removal) |
| High Availability |
Designed for nonstop operations |
| Operating System |
Cisco IOS XR |
| Power Consumption |
~30 W typical (varies by QSFP+ transceiver) |
| Cooling |
Uses chassis airflow and cooling system |
| Operating Temperature |
0°C to 40°C (32°F to 104°F) |
| Storage Temperature |
-40°C to 70°C (-40°F to 158°F) |
| Operating Humidity |
5% to 95% (Non-Condensing) |
| Use Case – Core Routing |
High-Speed Backbone Connectivity |
| Use Case – Edge / Aggregation |
Metro Ethernet & Uplink Aggregation |
| Use Case – Data Center |
Interconnect & Backbone Links |
| Compliance |
RoHS Compliant |
| Package Contents |
A9K-MPA-1x40GE Module (QSFP+ Optics Sold Separately) |
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FAQs for A9K-MPA-1x40GE:
Can I use this with any ASR 9000 chassis?
Yes, as long as the chassis has MPA-capable line cards installed.
What transceivers are supported?
Supports Cisco-certified QSFP+ modules such as 40GBASE-LR4, 40GBASE-SR4, and breakout cables (4x10G).
Does it support breakout to 4x10GE?
Yes, with supported QSFP+ breakout cables and configurations.
Is the port hot-swappable?
Yes, the entire MPA and individual transceivers can be hot-swapped.
Is this suitable for data center use?
Yes, it is ideal for high-throughput interconnects and aggregation roles in both service provider and data center environments.
