Cisco Network Modules

Cisco Catalyst 6500 Series/Cisco 7600 Series Sup Eng 720-3BXL

Data Sheet

Cisco Catalyst 6500 Series/Cisco 7600 Series
Supervisor Engine 720-3BXL

The Cisco® Catalyst® 6500 Series/Cisco 7600 Series Supervisor Engine 720-3BXL (Sup 720-3BXL) is the third-generation supervisor engine for the Cisco Catalyst 6500 Series Switch and Cisco 7600 Series Router. It addresses the growing data-plane requirements of service provider and enterprise customers by delivering scalable, enhanced services such as hardware-accelerated IPv4, IPv6, and Multiprotocol Label Switching (MPLS). The Cisco Sup 720-3BXL integrates a high-capacity crossbar switching fabric that can deliver up to 40-Gbps capacity per slot for a total system capacity of 720 Gbps.

Product Overview

The Cisco Sup 720-3BXL (Figure 1) integrates a high-performance 720-Gbps switch fabric with a new routing and forwarding engine into a single module. The integrated switch fabric provides up to 40-Gbps full-duplex capacity per slot, allowing it to support third-generation high-performance, high-density Gigabit Ethernet and 10-Gigabit Ethernet interfaces as well as all existing LAN, WAN, and services modules, including the widely deployed FlexWAN and optical services modules to address a broad range of WAN edge aggregation deployments from DS-0 through OC-48/STM-16.

The Cisco Sup 720-3BXL builds on the proven Cisco Express Forwarding architecture by supporting centralized forwarding (Cisco Express Forwarding) and distributed forwarding (distributed Cisco Express Forwarding) to provide a highly scalable and cost-effective platform.

The Cisco Sup 720-3BXL delivers a modular, resilient, scalable, and secure Layer 2 or Layer 3 solution by:

  • Enabling advanced IP services such as MPLS, IPv6, and quality of service (QoS)
  • Supporting high-performance, third-generation Ethernet interfaces
  • Delivering predictable and scalable system performance up to a sustained 400 Mpps using distributed forwarding cards (DFCs)
  • Scaling hardware-capable Forwarding Information Base (FIB) table entries to 1 million routes
  • Supporting all three generations of Ethernet line cards, optical services modules, FlexWAN, and services modules for investment protection
  • Delivering up to 40-Gbps full-duplex capacity per slot
  • Delivering 200-Mpps hardware-based IPv6 using DFCs
  • Providing for 256,000 NetFlow entries

Extensive feature support such as QoS mechanisms, hardware-based generic-routing-encapsulation (GRE) tunneling, and access control lists (ACLs) enable customers to build high-performance, feature-rich networks capable of offering services such as MPLS VPNs, metropolitan (metro) aggregation, and various WAN edge services.

Figure 1
Cisco Sup 720-3BXL

Key Features and Benefits

Table 1   Features and Benefits

Feature  Benefits 
Integrated 720-Gbps switch fabric
  • Integrated switch fabric saves up to 2 slots, allowing more slots for line cards
  • 40 Gbps per slot supports high-density Gigabit Ethernet and 10 Gigabit Ethernet
1 million routes for IPv4 FIB table
  • Scalability for supporting large routing tables
MPLS features
  • Layer 2 and Layer 3 VPNs, ATM over MPLS (AToM), traffic engineering, resiliency
Hardware-based IPv4 and IPv6 features
  • High performance and scalability
ACLs, ACL counters, and CPU rate limiting
  • Security, denial-of-service (DoS) attack control, and enhanced statistics

Product Specifications

Table 2   Product Specifications

Chassis compatibility

Cisco 76031

Cisco 76061

Cisco 7609

Cisco 7613

Cisco Catalyst 65031

Cisco Catalyst 65061

Cisco Catalyst 6509

Cisco Catalyst 6509-NEB1

Cisco Catalyst 6509-NEB-A

Cisco Catalyst 6513

Slot requirements

Occupies the switch fabric slots in the chassis:

3-slot chassis—slots 1 and 2

6-slot chassis—slots 5 and 6

9-slot chassis—slots 5 and 6

13-slot chassis—slots 7 and 8

Software compatibility



1-GB DRAM route processor

1-GB DRAM switch processor

64-MB boot Flash memory (512 MB maximum)


Removable Flash memory—128 MB, 256 MB, and 512 MB


2 Gigabit Ethernet ports, 1 Small Form-Factor Pluggable (SFP), 1 selectable SFP or 10/100/1000 RJ-45

Reliability and availability

Fast software upgrade

Route processor redundancy + (RPR+)

Online insertion and removal (OIR)

Cisco Nonstop Forwarding (NSF)2

Cisco Stateful Switchover (SSO)2

Network management

Cisco IOS® Software command-line interface

CiscoWorks Application Suite, including Resource Manager Essentials (RME) and CiscoWorks; Cisco 7600 Internet Router Manager (Element Management System) Internet Solution Center (ISC)

Physical specifications

(H x W x D): 1.6 x 15.3 x 16.3 in. (4.0 x 37.9 x 40.3 cm)

Power consumption

AC—394 watts

DC—315 watts

Heat dissipation—1345 BTU

Environmental conditions

Operating temperature: 32 to 104° F (0 to 40° C)

Storage temperature: -40 to 167° F (-40 to 75° C)

Relative humidity: 10 to 90%, noncondensing

Regulatory compliance


CE Markings


UL 60950

EN 60950

CSA-C22.2 No. 60950

IEC 60950

AS/NZS 3260

IEC 60825-1,-2

EN 60825 -1,-2




FCC Part 15 (CFR 47) Class A

ICES-003 Class A

EN 55022 Class A

CISPR 22 Class A

AS/NZS 3548 Class A

VCCI Class A


ETS300 386



Requires high-speed fan

Check software release for availability

Ordering Information

Table 3   Ordering Information

Description  Product Number 
Cisco Catalyst 6500 Series/Cisco 7600 Series Supervisor Engine 720 Fabric Multilayer Switch Feature Card 3 (MSFC3) and Policy Feature Card 3BXL (PFC3BXL)


Cisco Catalyst 6500 Series/Cisco 7600 Series Supervisor Engine 720-3BXL Gigabit Ethernet SFP modular multimode fiber optics, LC connector SX transceiver


Cisco Catalyst 6500 Series/Cisco 7600 Series Supervisor Engine 720-3BXL Gigabit Ethernet SFP modular single mode fiber optics, LC connector LX/LH transceiver


Cisco Catalyst 6500 Series/Cisco 7600 Series Supervisor Engine 720-3BXL Compact Flash Memory Card, 128 MB


Cisco Catalyst 6500 Series/Cisco 7600 Series Supervisor Engine 720-3BXL Compact Flash Memory Card, 256 MB


Cisco Catalyst 6500 Series/Cisco 7600 Series Supervisor Engine 720-3BXL Compact Flash Memory Card, 512 MB


Service and Support

Cisco Systems® offers a wide range of service support offerings for its service provider customers. Cisco has earned the highest customer satisfaction ratings in the industry by providing the world-class service and support necessary to deploy, operate, and optimize service provider networks.

Whether the goal is speed to market, maximizing network availability, or enhancing customer satisfaction and retention, Cisco is committed to the success of its service provider customers.

For More Information

For more information about Cisco service and support programs and benefits, go to:

For more information about the Cisco Catalyst 6500 Series Switch and the Cisco 7600 Series Router visit Cisco at: