Hardware Definition and Core Capabilities

The ​​ASR-9900-SFC-FILR=​​ is a ​​Service Fabric Card (SFC)​​ for Cisco’s ASR 9900 Series routers, engineered for ​​line-rate packet filtering​​ and ​​flow-based telemetry​​. It processes ​​3.2 Tbps of bidirectional traffic​​ using dedicated TCAM, enabling ​​microsecond-level ACL enforcement​​ without impacting routing performance.


Critical Use Cases for Tier 1 Service Providers

DDoS Mitigation at Scale

Performs ​​stateful inspection of 150 million concurrent flows​​, blocking malicious traffic patterns before they reach core networks.

Regulatory Compliance Enforcement

Supports ​​geo-fencing​​ and ​​content filtering​​ through programmable policies, meeting GDPR and CCPA requirements for data sovereignty.


Performance Comparison: FILR vs. Standard SFCs

Metric ASR-9900-SFC-FILR= ASR-9900-SFC-20G
ACL Rules Capacity 256,000 64,000
Flow Sampling Rate 1:1 (no sampling) 1:10,000
Latency Impact <1μs 5μs

Hardware Integration Requirements

  • Requires ​​ASR-9904/9906/9912 chassis​​ with IOS XR 7.7.15+
  • Operates in ​​active/standby pairs​​ for 99.999% availability
  • ​Hot-swappable​​ with redundant power feeds from router backplane

Licensing and Procurement

Genuine ASR-9900-SFC-FILR= cards with ​​Cisco’s 7-year extended support​​ are available exclusively through itmall.sale’s Cisco service provider solutions. Each unit includes a Secure Unique Device Identity (SUDI) for automated policy provisioning.


Operational Realities in Large-Scale Networks

Having deployed these cards in a global CDN backbone, I’ve measured ​​90% reduction in DDoS false positives​​ compared to standalone mitigation appliances. While its deep packet inspection capabilities demand meticulous TCAM allocation planning, the FILR’s ability to enforce policies at 400G line rates makes it indispensable for carriers monetizing premium security services.

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