The increase in demand for video and e-business application services requires service providers to offer both increased bandwidth and enhanced network services. The next-generation Cisco® Catalyst® 6500 Supervisor Engine 2 Terabit (2T) provides enhanced scalability and enables additional services natively without requiring WAN (SPA Interface Processor [SIP-400/SIP-600] or ES+) cards for service provider Multiprotocol Label Switching (MPLS) features.
Figure 1. 6500 Deployment in Service Provider Space.
Service Provider Requirements
• Scalability: Offer high switching performance and bandwidth availability to support bandwidth-intensive applications and enable new services without operational effects.
• Flexibility: Offer flexibility of port densities, and various connector types with long-reach optics. Offer the ability to integrate "triple play" and TLS services based on Layer 2, IP, and MPLS technologies.
• Feature richness: Offer differentiators to enable metropolitan services, such as MPLS, IPv6, and multicast.
• Security: Protect service provider resources and guarantee subscribers' traffic isolation and authentication.
• High availability: Maximize service uptime and reduce mean time to recovery (MTTR) and mean time between failure (MTBF).
• QoS: Enable voice, video, and data on the same platform, with jitter, latency, and packet loss guarantees.
• Manageability: Ease service provisioning, improve operational efficiency, and reduce OpEx costs.
Figure 2. Cisco Catalyst 6500 SUP 2T Service Provider Architecture.
Cisco Catalyst 6500 Series: The Foundation
• 2-Tbps integrated switch fabric capacity with Cisco Catalyst 6500 Series Supervisor Engine 2T
• Ability to scale from 60- to over 720-Mpps switching performance with distributed forwarding
• High-density Gigabit and 10-Gigabit Ethernet support and support for 40-Gigabit Ethernet
• End-to-end architecture and features consistency with Cisco ME 6524, Cisco Catalyst 6500 Supervisor Engine 32, Supervisor Engine 720, and Supervisor Engine 2T
• High-performance CPU for Layer 2 protocol convergence and stability
• Optimized switching capabilities with centralized and distributed MAC learning in hardware
• Optimized performance with jumbo frame support, deep packet buffers to handle bursty traffic, and low latency to minimize response times of real-time applications
• Innovative mechanism to scale the number of service instances and MACs in a Layer 2 network
• Support for a broad range of connectivity options by offering 10/100, 100BASE-X SFP, 10/100/1000, Gigabit Ethernet SFP, and 10-Gigabit Ethernet line cards
• Enhanced service richness in the same platform by supporting Layer 2 service enablers such as access and 802.1Q trunk ports, hardware-enabled 802.1Q tunnels, VLAN translation, EVC, and Layer 2 Protocol Tunneling
• Full IEEE compliancy and third-party interoperability through IEEE 802.3ad, 802.1w, and 802.1s
• Support for next-generation Layer 2 networks through standard IEEE 802.1ad implementation
• Memory protection, fault containment, and improved scalability through dedicated TCAMs for ACLs, security, and QoS deployments
• Protection of the service provider's network against DoS attacks, enabling Control Plane Policing and hardware rate limiters
• Flexible mechanisms to safeguard service provider's MAC table and optimize MAC learning
Figure 3. Security Mechanisms to Protect Service Provider MAC Table
• Protection of service provider's CPU through port-, VLAN-, and MAC-based ACLs enabled in hardware
• Protection from unauthorized end users through 802.1x, DHCP snooping, and dynamic ARP inspection
• Subscribers' protection and traffic isolation through private VLANs and private hosts
• Link security with 802.1AE-based encryption
• Hardware redundancy for fans, power supplies, fabrics, and clocks for nonstop operation
• Complete separation of control and data planes for enhanced resiliency
• Optimized Layer 2 fast convergence by enabling IEEE 802.1w (RSTP) and IEEE 802.1s (MSTP) improved Layer 2 fast convergence over hub-and-spoke topologies by enabling Flexlink to obviate the need for Spanning Tree
• Leadership in high availability and service uptime; stateful switchover (SSO) to help ensure minimal traffic loss and subsecond recovery in Layer 2 networks upon primary supervisor failure
• Multihoming and PE redundancy with support for Layer 3 and Layer 2 MPLS VPNs in VSS mode
Figure 4. Leveraging VSS for N-PE Redundancy in SP networks.
• Cisco IOS® Software modularity to deliver fault containment, memory protection, process restartability, and In-Service Software Upgrade (ISSU) for patch fixes
QoS and Multicast
• Advanced quality-of-service mechanism to enable triple play and TLS services on the same infrastructure (Figure 5)
Figure 5. Flexible QoS Mechanism to Enable Voice, Video, and Data
• Triple play services support by enabling Cisco innovative technologies, such as hardware-enabled PIM-SM and PIM-SSM and IGMP snooping, and hardware-based Layer 2 multicast
MPLS and EVC
• Support for MPLS features: L3VPNs, traffic engineering, EoMPLS, VPLS, VPLSoGRE, and H-VPLS natively without regular Ethernet cards supported on the Supervisor Engine 2T
Figure 6. VPLS Deployment with Catalyst 6500 SUP2T.
• Native support for EVC to scale VLANs (L2VPN mapping to EVC not supported)
• Additional control and forwarding scale scalability with Supervisor Engine 2T
• Full IPv6 in IPv4 tunneling support, IPv6 and IPv4 in IPv6 GRE tunneling support, and MPLS encapsulation without recirculation
Figure 7. Catalyst 6500 SUP2T IPv6 Enhancements.
• Increased end-to-end service operational efficiency through management and monitoring features such as E-OAM protocols
• The Supervisor Engine 2T with Policy Feature Card 4 (PFC4) supports a wide variety of NetFlow enhancements to support the needs of Cisco customers including Flexible Netflow
• Flexible and comprehensive network monitoring capabilities through SNMP MIBs for interface management, traffic monitoring, switching protocol management, and features management