Cisco ASR 9000 Series: A9K-2X100GE-TR – High-Performance Dual-Port 100G Adapter|LinkNewNet

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Cisco ASR 9000 Series: A9K-2X100GE-TR – High-Performance Dual-Port 100G Adapter

Jun 11 , 2025 76

Cisco ASR 9000 Series: A9K-2X100GE-TR – High-Performance Dual-Port 100G Adapter

Product Overview

The Cisco A9K-2X100GE-TR is a high-performance dual-port 100 Gigabit Ethernet (100GE) network module designed for the Cisco ASR 9000 Series routers. This compact yet powerful adapter delivers carrier-class reliability and flexibility for service provider edge, enterprise core, and cloud interconnect applications.

Key Features & Specifications

Feature	Specification
Port Configuration	2x 100G QSFP28 (breakout to 4x25G or 4x10G supported)
Forwarding Capacity	200Gbps (full duplex)
Supported Protocols	IPv4/IPv6, MPLS, VPLS, L2VPN, L3VPN
Encryption	MACsec (optional)
Power Consumption	~75W (typical)
Latency	<5μs (cut-through mode)
Compatibility	ASR 9901/9904/9906/9910/9912/9922 chassis
Hot-Swappable	Yes

Use Cases

✔ Mobile Backhaul – High-density 5G fronthaul/backhaul aggregation
✔ Enterprise WAN – High-speed campus/core connectivity
✔ Cloud Peering – Low-latency data center interconnects
✔ Video Distribution – High-bandwidth content delivery

Next-Generation Successor: A9K-2X100GE-SE

Key Upgrades & Improvements

Feature	A9K-2X100GE-TR	A9K-2X100GE-SE	Improvement
Port Technology	QSFP28	QSFP-DD	400G-readiness
Max Bandwidth	200Gbps	400Gbps (with breakout)	2x capacity
Power Efficiency	75W	50W	33% reduction
Latency	<5μs	<2.5μs	50% lower
Encryption	Software MACsec	Hardware MACsec (100Gbps)	4x performance
Protocol Support	MPLS/VPLS	Adds SRv6/EVPN	Cloud automation

Why Upgrade to the -SE Model?

✔ Future-Proof Design – Supports 400G via QSFP-DD optics
✔ Carrier-Grade Security – Line-rate MACsec without performance penalty
✔ Operational Efficiency – 50% lower power consumption
✔ Cloud-Native Ready – Full EVPN/VXLAN support

Migration Strategy

New Deployments

Standardize on A9K-2X100GE-SE for all new installations
Leverage QSFP-DD optics for investment protection

Existing -TR Installations

Phase out during hardware refresh cycles
Prioritize upgrades for security-sensitive applications

Hybrid Networks

Maintain -TR models in non-critical paths
Deploy -SE modules for high-priority traffic

"The -SE version delivers twice the performance at half the power – a game-changer for edge networks."
**— Senior Network Architect, Global Tier 1 Carrier**

Conclusion

While the A9K-2X100GE-TR remains a reliable workhorse for 100G networks, the A9K-2X100GE-SE represents the next evolutionary step with:

400G-ready architecture
Military-grade encryption
Cloud-scale automation
Sustainable power profile

Recommended Actions:
▸ Conduct power/cooling assessment
▸ Validate optics compatibility
▸ Explore Cisco's Technology Migration Program

Short Title Alternative:
"Cisco's Dual 100G Evolution: From TR to SE"

Next: Cisco ASR 9000 Series: A9K-4X100GE-TR – High-Performance 100G Port Adapter

Tags: linecard cisco A9K-2X100GE-TR

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