This Cisco XR 12000 and 12000 series SPA Interface Processor 401 provides a common forwarding and queuing engine responsible for packet classification, forwarding decisions, packet queuing, and accounting without compromising the performance. It has two forwarding engines, one for ingress and one for egress, allowing the user to implement multiple features and QoS policies at the incoming traffic, independently from the features and the QoS policies applied at the egress interfaces. The multicast replication is done by the egress forwarding engine, hence a very scalable multicast implementation with a native and built-in security and QoS features for multicast flows.

• Supported Platforms:
• Cisco XR 12400 series Routers
• Cisco XR 12800 series Routers
• Cisco 12400 series Routers
• Cisco 12800 series Routers
• Cisco XR 12006
• Cisco XR 12010
• Cisco 12006
• Cisco 12010
• Supported SPAs:
• SPA-8XCHT1/E1
• SPA-2XT3/E3
• SPA-4XT3/E3
• SPA-2XCT3/DS0
• SPA-4XCT3/DS0
• SPA-1XCHSTM1/OC3
• SPA-4XOC3-POS-V2
• SPA-8XOC3-POS
• SPA-2XOC12-POS
• SPA-4XOC12-POS
• SPA-8XFE-TX
• SPA-2x1GE
• SPA-2X1GE-V2
• SPA-IPSEC-2G-2

• Spare Product
• Features:
• Online insertion and removal (OIR) enabling insertion and removal of line cards without affecting traffic
• Multirouter automatic protection switching (MR-APS)
• Layer 3 nonstop forwarding (NSF) and stateful switchover (SSO)
• High number of IPv4, IPv6, Multiprotocol Label Switching (MPLS), and MPLS VPN unicast and multicast routes
• Filtering on source or destination IP addresses, on transport protocols, or at input or output interfaces
• Output queuing: 8192 MDRR queues dynamically shared across all SPAs
• Supports Cisco IOS version 12.0(32)S or higher