Cisco Versatile Interface Processor 4, Model 50 VIP4-50= 数据表

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– Distributed IP NetFlow Switching CEF-based NetFlow and data export—Facilities implemented via NetFlow,

such as analysis of all traffic flows transiting the router and improved access-list processing, scale to high

system aggregate performance levels when implemented across multiple VIP4 engines.

• Distributed services—Each VIP4 runs, in effect, a subset of the Cisco IOS

®

 software. This powerful feature

enables the VIP4 to execute complex and processor-intensive IP services, scaling the application and performance

of these features while offloading the main router processor. Distributed services delivers enhanced,

network-layer IP services such as distributed QoS and security services such as encryption and link-level

compression.

There are two different versions of the VIP4: the VIP4-80 and the VIP4-50, providing two levels of distributed

switching and services performance, matching system performance requirements to overall deployment costs.

Both VIP4 versions support two modular PAs and identical ECC-protected memory expansion options. Table 1

outlines the three VIP4 models.

The VIP4-50 offers support for distributed switching and distributed services. Powered by a 250-MHz RM5000, it

provides large program memory to accommodate Layer 3 route information from the RSP for autonomous switching

decisions, and large packet memory capacity necessary for distributed IP services. In addition, the VIP4-50 runs

a subset of Cisco IOS software to provide support for enhanced network services such as distributed queuing

and software-based encryption and compression.

The VIP4-80 is designed for the most demanding environments with increased processor performance and very large

memory options. It offers 80 percent greater distributed switching performance over VIP4-50 from its 250-MHz

MIPS RM7000 processor. In addition, the enhanced memory architecture of the VIP4 series provides substantially

greater packet memory than previous VIPs. This feature supports environments with long round-trip propagation

VIP4 Base Configurations

VIP4-50

VIP4; Model 50

Yes

Moderate
to high

Distributed switching

Moderate link utilization

Cisco Express Forwarding

VIP4-80

VIP4; Model 80

Yes

Very high

Demanding applications with

• High distributed switching

performance

• Multiple high-speed PAs with

high link utilization

• Extensive use of distributed IP

services

• Cisco Content Networking