Cisco Cisco 12000 Series 12-Port DS3 Line Card Hoja De Datos

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Service-specific SPAs—Each of these SPAs provides additional service processing to the processing

power of the engine to offer specific services such as IP Security (IPsec).

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A SPA controller that is responsible for adapting the user traffic flowing between the SPA interfaces and

the Layer 3 forwarding engine—The SPA controller provides the ability to prioritize traffic from the SPA into

the engine, maintaining QoS behaviors even in oversubscribed configurations. Intelligent oversubscription

of 2:1 is performed thanks to two hardware capabilities:

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8-MB buffers to absorb a large traffic burst, beyond 10 GB, without packet drops

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Two priorities of queuing (high and low) to protect higher-priority traffic in case of congestion

Product Features

Table 1 describes the basic features on the Cisco XR 12000 and 12000 Series SIPs.

Table 1.

Product Features

Feature

Description

Provider edge

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High number of IPv4, IPv6, Multiprotocol Label Switching (MPLS), and MPLS VPN unicast and multicast routes:

up to 1 million IPv4/MPLS or 512,000 IPv6 route entries.

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High-density Gigabit Ethernet aggregation capability with up to 20 Gigabit Ethernet ports per SIP with intelligent

oversubscription

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Building Integrated Timing Supply (BITS)

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Layer 3 VPNs over MPLS (RFC 2547) and over IP (MPLS VPNs over Layer 2 Tunneling Protocol Version 3

[L2TPv3])

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Layer 2 VPNs over MPLS (Any Transport over MPLS [AToM]) and over IP L2TPv3)

Protocols

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Layer 3 routing protocols: Border Gateway Protocol Version 4 (BGPv4), Open Shortest Path First (OSPF),

Intermediate System-to-Intermediate System (IS-IS), Enhanced Interior Gateway Routing Protocol (EIGRP),
Routing Information Protocol (RIP), Distributed Forwarding Information Base (FIB) IP switching, Cisco Discovery
Protocol, Internet Control Message Protocol (ICMP), Routing with Resource Reservation (RRR), and others

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Hot Standby Router Protocol (HSRP) and Virtual Router Redundancy Protocol (VRRP)

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Multicast forwarding with support for source and shared distribution trees and the following protocols: Protocol

Independent Multicast-dense mode (PIM-DM); PIM-sparse mode (PIM-SM); Internet Group Management Protocol
Versions 1 and 1 (IGMPv1/v2); Cisco Group Management Protocol (GMP); Multiprotocol Border Gateway Protocol
(MBGP); Multicast Source Discovery Protocol (MSDP); and others

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Comprehensive MPLS protocols such as LDP, RSVP-TE

Reliability and availability

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Online insertion and removal (OIR) enabling insertion and removal of line cards without affecting traffic

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Multirouter automatic protection switching (MR-APS)

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Layer 3 nonstop forwarding (NSF) and stateful switchover (SSO)

Network management

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Cisco IOS

Software and Cisco IOS XR Software command-line interface (CLI)

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Simple Network Management Protocol (SNMP) Management Information Base (MIB)

Statistics and accounting

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Per-VLAN and source-destination MAC address filtering and accounting

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Per-class accounting through Modular QoS CLI (MQC) MIB

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Border Gateway Protocol (BGP) (source and destination) policy accounting

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Input and output full NetFlow Version 8 in hardware

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Input and output sampled NetFlow, Versions 5, 8, and 9 in hardware

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Byte and packet counting per ingress port for IP and MPLS packets

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Byte and packet counting per ingress port for IP and MPLS type-of-service (ToS) bits

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Bytes and Packet counting for Modified Deficit Round Robin (MDRR) and Weighted Random Early Detection

(WRED) functions

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Packet and byte counting for committed-access-rate (CAR) feature

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Counting per ingress port for IP prefixes and Cisco Express Forwarding adjacencies

Security

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Access control lists (ACLs)

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Unicast Reverse Path Forwarding (URPF)

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Filtering on source or destination IP addresses, on transport protocols, or at input or output interfaces