Optimal Control for Voice, Video, and Data Services
Figure 1. Cisco Catalyst 4500 Series Switches for Metro Ethernet Networks
The Ethernet Advantage In Access Network
• Integrated resiliency: Network downtime is minimized with redundant supervisor-engine capability (on the Cisco Catalyst 4500, 7 slot and 10 slot chassis), 1 + 1 power-supply redundancy, and software-based fault tolerance across the Cisco Catalyst 4500 Series. ISSU, in combination with Nonstop Forwarding with Stateful Switchover (NSF/SSO), offers continuous data packet forwarding during switchover. With time-sensitive traffic, including voice and video, running over the FTTx access network, integrated resiliency is essential for improving customer satisfaction and maintaining profitability.
• Sophisticated QoS: Integrated QoS and traffic-management capabilities based on Layers 2 through 4 classify and prioritize mission-critical and time-sensitive traffic based on 64,000 QoS classification entries per direction. The Cisco Catalyst 4500 Series can shape and rate-limit bandwidth-intensive traffic with mechanisms such as input and output policers based on host, network, and application information. Other QoS mechanisms such as 802.1p and 3-Color Rate Limiting can be deployed. The QoS mechanisms are delivered with no effect on performance.
• Predictable performance: The Cisco Catalyst 4500 Series offers up to a 250-million packets per second (mpps) wire-speed forwarding rate in hardware for traffic in Layers 2 through 4. Switching performance is independent of the number of route entries, QoS mechanisms enabled, and active VLANs. FTTx access networks need to respond reliably and quickly to meet end customer service-level agreements (SLAs).
• Advanced network security: The Cisco Catalyst 4500 Series supports up to 64,000 wire-rate Layer 2 through 4 access-list entries; Dynamic Host Configuration Protocol (DHCP) interface tracker (option 82) for subscriber tracking; DHCP Snooping to prevent malicious or misconfigured DHCP servers; Port Security to prevent MAC flooding attacks; Dynamic ARP Inspection (DAI) to add further security to Address Resolution Protocol (ARP) and IP Source Guard; and other advanced security capabilities such as user authentication, client security, and control-plane policing.
Scalable Service-Oriented Architecture
Cisco Catalyst 4500 Series Benefits
• Performance: The low-latency, centralized, shared-memory switching-fabric architecture of the Cisco Catalyst 4500 Series delivers leading-edge, high-performance Layer 2 and Layer 3 capabilities. Delivering advanced switching solutions that scale bandwidth as ports are added, the Cisco Catalyst 4500 Series is powered by leading-edge, application-specific integrated circuit (ASIC) technology that offers wire-speed Layer 2 and Layer 3 10/100 or gigabit switching. Offering modular supervisor-engine flexibility with complete line-card compatibility, Layer 2 switching can scale up to 320 Gbps or 250 Mpps. Any combination of Cisco Catalyst 4500 Series switches and supervisor engines can be deployed with no degradation of forwarding performance with all QoS and security features enabled, making the Cisco Catalyst 4500 Series the platform for mission-critical applications.
• Scalability: The Cisco Catalyst 4500 Series meets network-subscriber connectivity requirements of up to 384 copper or fiber Fast Ethernet or Gigabit Ethernet ports in a chassis. The Cisco Catalyst 4500 Series supports density requirements for both business and residential service environments. These switches offer network operators who are building next-generation access networks flexibility in fiber options by supporting all types of fiber deployments (single and dual strands). With the support of the single strand of fiber, network operators can reduce the fiber requirement by 50 percent, providing significant savings in fiber, cable management, and other installation costs as well as long-term operating expenses.
• Redundancy: The Cisco Catalyst 4500, 7 slot and 10 slot chassis support 1 + 1 supervisor-engine redundancy for integrated resiliency. Redundant supervisor engines help ensure that network downtime is minimized. Minimal network downtime facilitates reduced operating expenses and increased customer satisfaction. The Cisco Catalyst 4500 Series supports redundant power supplies in all chassis types. The Cisco Catalyst 4500 IOS Software supports ISSU, enabling software, line-card upgrades without affecting service for subscribers.
• Service-oriented software services: The Cisco Catalyst 4500 Series provides a wide range of software services that allow service providers to deliver residential and business services based on subscriber requirements. Key features include:
– Advanced security: Enabling security features such as DHCP Snooping, access control lists (ACLs), Secure Shell (SSH) Protocol, Port Security, Control Plane Policing, DAI, IP Source Guard, and Private VLANs (PVLANs) on the Cisco Catalyst 4500 Series enhances control and flexibility in the network. By enabling these features selectively or collectively, a network administrator can prevent unauthorized access to the network, prevent hackers from disrupting services, and prevent a deliberate or accidental broadcast storm.
– Video services: Protocol Independent Multicast (PIM), dense and sparse mode, Internet Group Management Protocol (IGMP), IGMP Snooping, proxy reporting, Multicast Listener Discovery (MLD) v1 and v2, and Cisco Group Management Protocol provide for efficient standards-based and Cisco product-enhanced broadcast video service deployment without compromising performance. Source Specific Multicast (SSM) and SSM Mapping (mapping IGMPv2 joins to Source Specific PIM joins) provide additional scale and control of multicast.
– Cisco IOS Software network services: The Cisco Catalyst 4500 Series takes advantage of more than 10 years of development with large-scale deployments across the entire world, to provide mature Layer 2 and Layer 3 features that allow service providers to differentiate their services and meet SLAs.
• Intelligent management capability: The Cisco Catalyst 4500 Series supports a variety of management options suited for managing service provider networks, such as Cisco IOS Embedded Event Manager (EEM), Cisco Generic Online Diagnostics (GOLD), NetFlow, and Smart Call Home. With EEM and GOLD, network operators can design scripts based on their specific requirements to troubleshoot the network. With Smart Call Home, the Cisco IOS Software on the Cisco Catalyst switch automatically detects problems in the network and automatically collects the required debug information and logs a trouble ticket. With NetFlow, statistics about the network can be captured in hardware for flow- and VLAN-based statistics monitoring. This data can be exported, collected, and analyzed for network traffic accounting, usage-based network billing, network planning, network monitoring, and data-mining capabilities.
• Investment protection: The flexible modular architecture of the Cisco Catalyst 4500 Series provides cost-effective interface upgrades for access and aggregation deployments. Customers deploying the Cisco Catalyst 4500 Series with Supervisor Engine IV or V models who desire higher performance and enhanced features on all system ports can easily upgrade to the Supervisor Engine 6E or 6L-E model without replacing existing line cards and wiring. Customers requiring redundancy can upgrade to Cisco Catalyst 4507R+E or Catalyst 4510R+E chassis and take advantage of all the line cards and supervisor engines. Compatible sparing between Cisco Catalyst 4503E, Catalyst 4506E, Catalyst 4507R+E, and Catalyst 4510R+E Series chassis provides commonality of power supplies and switching line cards, lowering the overall deployment, migration, and support costs.
One Network for All Types of Customers
Figure 2. Next-Generation FTTx Network
For More Information