The Cisco® 7600 Series Route Switch Processor 720 (RSP 720) is specifically designed to deliver high scalability, performance, and fast convergence required for today's and tomorrow's demanding voice, video, data, and mobility (quadruple-play) services. The Cisco 7600 RSP 720 offers service providers and enterprises true service convergence with the ability to manage a wide variety of applications over a range of access mediums using a single platform (Figure 1).
Figure 1. Cisco 7600 Route Switch Processor 720
The Cisco 7600 RSP 720 uses the same high-performance 720-Gbps crossbar switch fabric as that used by the Cisco Catalyst® 6500 Series Supervisor Engine 720 and combines it with a new, revised, and application-specific integrated circuit (ASIC)-based forwarding engine. This single module delivers 40 Gbps of switching fabric capacity per slot, supporting 4-port 10 Gigabit Ethernet and 48-port 10/100/1000 density line cards. With hardware-enabled forwarding for IPv4, IPv6 Unicast and Multicast, and Multiprotocol Label Switching (MPLS), the Cisco RSP 720 can provide high-speed central forwarding with rich packet processing features such as access control lists (ACLs), quality of service (QoS), MPLS VPNs, and more. Combining the Cisco 7600 RSP 720 with distributed forwarding cards (DFCs), the total system performance can scale up to 400 Mpps.
The Cisco 7600 RSP 720 delivers a rich set of IP features in hardware for applications such as subscriber aggregation, IP forwarding, Layer 2 and Layer 3 MPLS VPNs, and Ethernet over MPLS (EoMPLS) with quality of service (QoS) and security features.
The Cisco 7600 RSP 720 comes integrated with two new daughter cards:
• Policy Feature Card (PFC-3C or PFC-3CXL) - Performs Layer 2 and Layer 3 forwarding in hardware with constant performance, even with intensive features enabled such as ACLs, QoS, generic routing encapsulation (GRE), or Network Address Translation (NAT); the Policy Feature Card performs the following functions:
– Performs Layer 2 and Layer 3 forwarding
– Enforces ACL functions
– Performs QoS policing and marking
– Collects NetFlow statistics
– Offers Control Plane Policing (CoPP)
• Multilayer Switch Feature Card (MSFC4) - Runs Layer 2 and Layer 3 protocols and performs all the control-plane functions
Features and Benefits
Table 1 lists the features and benefits of the Cisco 7600 RSP 720.
Table 1. Features and Benefits of Cisco 7600 RSP 720
Features
Benefits
Integrated 720-Gbps switch fabric
• Offers Layer 2 forwarding rates of up to 30 million packets per second (Mpps)
• Provides bandwidth capacity of 40 Gbps per slot
• Allows additional slots for increased port density
Hardware-based Cisco Express Forwarding
• Offers Layer 3 (IP and MPLS) forwarding rates of 30 Mpps
Faster CPU and added memory (over its predecessor Supervisor Engine 720)
• Performance improvements include:
• Faster protocol convergence times
• Improved Internet Group Management Protocol (IGMP) snooping times
• Improved router boot-up times
• Faster rates of establishing Dynamic
• Host Configuration Protocol (DHCP) server, Label Distribution Protocol (LDP),
• IP sessions, and traffic engineering
High-density residential subscribers aggregation
• Allows customers to support a combination of Layer 2 VPN (L2VPN) and L3VPN features for use in a quadruple-play network
Hardware Enhancements over Supervisor Engine 720
Table 2 lists the hardware enhancements over the Supervisor Engine 720.
Table 2. Hardware Enhancements
Features
Cisco Catalyst 6500 Series/7600 Series Supervisor Engine 720-3B
Cisco Catalyst 6500 Series/7600 Series Supervisor Engine 720-3BXL
Cisco 7600
RSP 720-3C
Cisco 7600
RSP 720-3CXL
CPU; speed
MIPS; 600 MHz
MIPS; 600 MHz
PowerPC; 1.2 GHz
PowerPC; 1.2 GHz
Memory (route processor/switch processor)
512 MB/512 MB
1 GB/1 GB
1 GB/1 GB
2 GB/1 GB
Compact Flash memory
512 MB; 1 GB (post-FCS)
512 MB; 1 GB (post-FCS)
512 MB; 1 GB (post-FCS)
512 MB; 1 GB (post-FCS)
NVRAM
2 MB
2 MB
4 MB
4 MB
FAT 32 file system
Not supported
Not supported
Supported
Supported
Scalability Table
Table 3 gives scalability information for the Cisco 7600 RSP 720.
Table 3. Scalability Information for Cisco 7600 RSP 720
Name
RSP 720-3C
RSP 720-3CXL
IPv4 routing
In hardware
Up to 400 Mpps*
In hardware
Up to 400 Mpps*
IPv6 routing
In hardware
Up to 200 Mpps*
In hardware
Up to 200 Mpps*
Layer 2 bridging
In hardware
Up to 400 Mpps*
In hardware
Up to 400 Mpps*
MPLS
MPLS in hardware to enable use of Layer 3 VPNs and EoMPLS tunneling; up to 1024 Virtual Route Forwarding (VRF) ,with a total of up to 256,000 routes per system
MPLS in hardware to enable use of Layer 3 VPNs and EoMPLS tunneling; up to 1024 VRFs ,with a total of up to 1M routes per system
GRE
In hardware
In hardware
NAT
Hardware assisted
Hardware assisted
Routes
256,000 (IPv4); 128,000 (IPv6)
1M (IPv4); 512K (IPv6)
NetFlow entries
128,000
256,000
Features
Table 4 lists QoS features, Table 5 lists security features, Table 6 lists MPLS features, and Table 7 lists specifications of the Cisco 7600 RSP 720.
Table 4. QoS Features of Cisco 7600 RSP 720
Feature
RSP 720-3C
RSP 720-3CXL
Aggregate rate-limiting location
Ingress port or VLAN and egress VLAN or Layer 3 port
Ingress port or VLAN and egress VLAN or Layer 3 port
Rate-limiting level types:
Committed information rate (CIR) and peak information rate (PIR)
CIR and PIR
CIR and PIR
Flow-based rate-limiting method; number of rates
Per source address, destination address, or full flow; 64 rates
Per source address, destination address, or full flow; 64 rates
MAC ACLs featuring per-port and per-VLAN granularity
Yes
Yes
Table 5. Security Features of Cisco 7600 RSP 720
Feature
RSP 720-3C
RSP 720-3CXL
Application-control-engine (ACE) counters
Yes
Yes
Port security
Yes
Yes
IEEE 802.1x and 802.1x extensions
Yes
Yes
VLAN and router ACLs and port ACLs
Yes
Yes
Reflexive ACLs
128,000
256,000
Unicast Reverse Path Forwarding (uRPF) check in hardware
Up to 6 paths
Up to 6 paths
CPU rate limiters (denial-of-service [DoS] protection)
10 special-case rate limiters plus CoPP
10 special-case rate limiters plus CoPP
Private VLANs
Yes
Yes
MAC ACLs on IP
Yes
Yes
TCP intercept hardware acceleration
Yes
Yes
Table 6. MPLS Features
Feature
RSP 720- 3C
RSP 720-3CXL
Interface support
LAN and WAN interface modules as applicable
LAN and WAN interface modules as applicable
Label imposition and disposition (MPLS-Provider Edge) and swapping (MPLS-Provider Core)
Yes
Yes
Label Distribution Protocol (LDP)
Yes
Yes
Tag Distribution Protocol (TDP) support
Yes
Yes
MPLS VPN
Yes
Yes
VRF Lite
Yes
Yes
QoS mechanisms using experimental (EXP) bits
Yes
Yes
MPLS with Resource Reservation Protocol Traffic Engineering (MPLS-RSVP-TE)
• Cisco 7600 Series/Catalyst 6500 Series Enhanced FlexWAN Module
• Ethernet services modules (part numbers):
• 7600-ES20-GE3C
• 7600-ES20-GE3CXL
• 7600-ES20-10G3C
• 7600-ES20-10G3CXL
• All 7600-ES+ Variants since SRD
• All 76-ES+XT variants since SRE
• All 76-ES+XC variants since SRE
• All 76-ES+T variants since SRD4
• Distributed Forwarding Cards (part numbers):
• DFC3C
• DFC3CXL
• DFC3B
• DFC3BXL
• High-Density Ethernet cards (part numbers):
• WS-X6700
• WS-6500
• WS-X6400
• WS-X6100
Slot requirements
Occupies the switch fabric slots in the chassis:
• 4-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
Cisco 7600 Series
• RSP 720 is introduced on Cisco IOS® Software Release 12.2.33SRB train
Protocols
• Layer 3 routing protocols, Border Gateway Protocol version 4 (BGPv4), Open Shortest Path First (OSPF), Intermediate System-to-Intermediate System (IS-IS), Routing Information Protocol (RIP), Distributed Forwarding Information Base (FIB) switching, Cisco Discovery Protocol, and Internet Control Message Protocol (ICMP)
• Multicast forwarding, Protocol independent Multicast (PIM) (both sparse and dense mode), (S,G), (*,G), and Bidirectional PIM in hardware
• Comprehensive MPLS support
• Cisco Group Management Protocol and Internet Group Management Protocol (IGMP) snooping
Table 8. Ordering Information for Cisco 7600 RSP 720
Product Number
Description
RSP720-3C-GE(=)
RSP 720 with PFC-3C includes:
• Two Gigabit Ethernet ports (port 1 supports 1-Gbps Small Form-Factor Pluggable (SFP) module; port 2 is configurable for either SFP or 10/100/1000BASE-TX through a RJ-45 connector
• Integrated 720-Gbps switch fabric
• PFC-3C and MSFC4
• Route processor: 1- to 4-GB DRAM (1-GB default)
• Service processor: 1- to 2-GB DRAM (1-GB default)
• Two external Compact Flash Type II slots
• 4-MB nonvolatile RAM (NVRAM)
• 512-MB internal boot memory (Compact Flash)
RSP720-3CXL-GE(=)
RSP 720 with PFC-3CXL includes:
• Two Gigabit Ethernet ports (port 1 supports 1-Gbps SFP module; port 2 is configurable for either SFP module or 10/100/1000BASE-TX through a RJ-45 connector
• Integrated 720-Gbps switch fabric
• PFC-3CXL (high capacity) and MSFC4
• Route processor: 1- to 4-GB DRAM (2-GB default)
• Service processor: 1- to 2-GB DRAM (1-GB default)
• Two external Compact Flash Type II slots
• 4-MB NVRAM
• 512-MB internal boot memory (Compact Flash)
MEM-RSP720-2G
MEM-RSP720-2G
RSP 720 2-GB memory upgrade
MEM-RSP720-4G
MEM-RSP720-4G=
RSP 720 4-GB memory upgrade
MEM-RS720-CF1G
1-GB Compact Flash memory
MEM-RS720-CF512M
512-MB Compact Flash memory
Service and Support
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