ASR-9906-FAN

Description

The Cisco ASR-9906-FAN is the dedicated fan tray for the Cisco ASR 9906 Router chassis, delivering carrier-class cooling performance essential for high-density 100 Gigabit Ethernet line cards and the Route Switch Processor 880-LT (RSP880-LT). Designed for the Cisco ASR 9000 Series, it accommodates demanding wireline, Data-Center-Interconnect (DCI), and Radio Access Network (RAN) aggregation applications. The ASR 9906 chassis, supported exclusively by RSP880-LT, benefits from 230 Gbps fabric capacity per RSP, ensuring exceptional scale, service flexibility, and high availability for video, cloud, and mobile services.

System Architecture and Performance

The integrated switch fabric architecture features a distributed, multistage low-latency nonblocking design with service intelligence and traffic prioritization. It provides superior network-timing capabilities, including Centralized Building Integrated Timing Supply (BITS), Precision Time Protocol (PTP) or IEEE 1588-2008 via dedicated 10-Mbps or 100-Mbps Ethernet port, and Bidirectional Time of Day (ToD) with 10-MHz and 1-pps interfaces. This ensures reliable operation in the ASR 9906 environment with the RSP880-LT.

Route Switch Processor Variants for ASR 9906

• RSP880-LT-TR: Packet Transport optimized, 16 GB DRAM, 4 cores at 2.4 GHz, two 128 GB SSDs.
• RSP880-LT-SE: Service Edge optimized, 32 GB DRAM, 4 cores at 2.4 GHz, two 128 GB SSDs.

These processors offer higher memory for large-scale service deployments, backward compatibility with second-generation line cards, and support for mixing service-optimized and transport-optimized cards.

Key Features and Capabilities

• Highly scalable fabric designed for high 1-, 10-, and 100-Gbps port densities with built-in investment protection.
• Memoryless switch fabric for transparent nonblocking, low-latency packet forwarding.
• Virtual output queuing and arbitration for service intelligence, traffic prioritization (unicast and multicast), and efficient congestion management avoiding head-of-line blocking.
• Centralized arbiter with efficient credit mechanism for transparent switchover with zero packet loss.
• IEEE 1588 support for efficient timing services over packet networks.
• Two independent clock source connections: BITS/SSU and DTI for redundant centralized synchronization.
• Solid-State Drives (SSDs) for core dumps storage, reducing Mean Time To Repair (MTTR).
• Embedded eUSB and front-panel USB 2.0 for software image storage, upgrades, and recovery.
• Front-panel LEDs for status (active/standby), power, SSD activity.
• Management ports: console, auxiliary, two 100/1000BASE-T Ethernet.

Software and Services Support

Powered by Cisco IOS XR Software with true modularity, protected memory processes, distributed route processing, Software Maintenance Updates (SMU), and Field-Programmable Device (FPD) upgrades without service interruption. Supports L2VPN, L3VPN, IPTV, CDNs, mobile backhaul, MPLS TE-FRR, MC-LAG, NSF/NSR, PTPv2, GPS, SyncE, and more. Multiservice Edge (MSE) and Ethernet MSE (E-MSE) for enterprise VPNs with high scale in VRFs, routes, BFD, BGP.

Compatibility

Optimized for ASR 9906 chassis with RSP880-LT. Supports extensive 5th, 3rd, and 2nd generation line cards including A9K-8HG-FLEX series, A99-12X100GE, A9K-8X100GE, A99-48X10GE-1G, A9K-MOD400, and more for 400G, 100G, 10G densities.

High Availability and Redundancy

No single point of failure, 1+1 RSP redundancy (same type), software redundancy. Timing synchronization via PTPv2, GPS, DTI, BITS on RSP, SyncE on line cards.