The Cisco^® ASR 9900 Switch Fabric Card 2 Switch Fabric Card S and Switch Fabric Card T are the next-generation switch fabrics for the Cisco ASR 9922 Router ASR 9912 Router ASR 9910 Router and ASR 9906 Router supporting high-density 100 Gigabit Ethernet line cards. The system architecture of the Cisco ASR 9900 Switch Fabric Card 2 (ASR 9900 SFC2) Switch Fabric Card S (ASR 9900 SFC-S) and Switch Fabric Card T (ASR 9900 SFC-T) is designed to accommodate new programmable deployment models and convergence of Layer 2 and Layer 3 services as required by today's wireline Data-Center-Interconnect (DCI) and Radio Access Network (RAN) aggregation applications.