Cisco C8510-SRP - Switch Route Processor Bedienungsanleitung PDF herunterladen (Seite 7)

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blocking OC-48 ATM switching. These performance numbers are

combined with the features of Cisco IOS software to yield

unmatched features/performance value for the campus backbone.

Smooth Integration

The Catalyst 8500 allows smooth integration into existing

networks by incorporating:

• Cisco IOS-based routing protocols (IGRP, EIGRP, OSPF,

BGPv4, Hierarchical PNNI) that are proven, time tested,

reliable, and fast converging in the backbone

• Protocols such as HSRP and SSRP that allow for smooth

fail-over and redundancy at the network layer

• Cisco IOS-based router management and conﬁguration tools

such as Cisco Resource Manager (CRM)

Investment Protection

• Deployment options in the Catalyst 5500—The Catalyst 8510

technology is integrated into the Catalyst 5500 chassis.

Speciﬁcally, the Catalyst 8510 SRP or MSRP and the line cards

can be deployed in the bottom ﬁve slots of the Catalyst 5500.

This deployment option provides investment protection for

customers who have already deployed the Catalyst 5500 in their

networks while also complementing the capabilities of the

Catalyst 5500 as a superior campus LAN aggregation switch.

• Common line cards with the LightStream 1010—The Catalyst

8500 series can use existing LightStream 1010-based line cards

which provide not only investment protection for these line

cards but also a complete set of line card functionality ranging

from Circuit Emulation Service (CES) modules to OC-12 ATM

switching modules. This continues Cisco’s rich history in

providing unsurpassed investment protection and smooth

migration options for customers looking for ever-increasing

performance from their campus networks.

• Programmable ASICs—The line card ASICs on the Catalyst

8500 series are ﬂexible and future proof. Each line card ASIC

can be upgraded by performing a simple microcode change that

can be a part of the Cisco IOS software upgrade.

• Common sparing—The Catalyst 8510 shares the same power

supplies and fan trays as the Catalyst 5000 and the Cisco

LightStream 1010. This scenario provides common sparing for

equipment across product lines in the enterprise.

High Network Scalability and Availability

Cisco Express Forwarding (CEF) was invented to solve

scalability issues that occur in the Internet. As enterprise intranets

begin to integrate with the Internet, it is imperative that

technologies such as CEF are implemented in enterprise class

products. CEF scales existing Cisco 7500 routers and the Cisco

12000 GSR routers by isolating the control plane (routing) and

data plane (switching). The Catalyst 8500 series incorporates the

CEF switching paradigm to yield proven “Internet-class”

scalability and robustness.

The Catalyst 8540 delivers a wide range of services in a

highly-available architecture. The route module is separated from

the switching module and each function is then made redundant

through the support of additional modules in the chassis. In

addition, the Catalyst 8540 supports redundant AC/DC power

supplies, power connections, and network clocking functions.

While the Catalyst 8540 is in operation, the Cisco IOS software on

the standby route module can be loaded with a different image and

a switch to the standby module can be made under administrative

control. This allows for the smooth migration of the network to

support additional features as they become available with new

releases of Cisco IOS software.

Preservation of permanent and switch virtual connections

(PVCs and SVCs) is the primary goal of the high-availability ATM

switching options. To that end, in the presence of redundant

components, following any malfunction the Catalyst 8540 would

become fully operational in under 60 seconds and in some

cases—considerably less. Separation of the control from

the forwarding ensures that the permanent circuits would not be

taken down or suffer any cell loss when the primary Multiservice

Route Processor module malfunctions. If the switch module

malfunctions and a standby module is conﬁgured in the system, all

the permanent circuits would continue operating with minimal

loss. If a switch loses the primary reference clock source the

on-board clock module would provide accurate holdover, and if

the switch module malfunctions the redundant clock module

would provide lossless holdover. All of the above, coupled with

power supply redundancy ensures complete availability for

mission-critical delivery of voice and data.

Protects Mission-Critical Applications with Rich QoS

Capabilities

The ever-increasing trafﬁc loads and dynamic trafﬁc patterns in the

enterprise network require network managers to protect

mission-critical applications from other types of trafﬁc.

The Catalyst 8500 series incorporates rich QoS capabilities

such as Weighted Round Robin (WRR), Rate and Strict Priority

queue scheduling and Per-Flow Queuing (PFQ). These

capabilities, when combined with CiscoAssure Policy

Networking, deliver the ability to protect mission-critical trafﬁc by

allowing network administrators to easily provision, manage, and

control trafﬁc ﬂows in the network without sacriﬁcing

performance.

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