Cisco C8510-SRP - Switch Route Processor Uživatelský manuál stáhnout pdf (Strana 6)

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Multiservice Switch Route Processor (MSRP) and the line cards

into the Catalyst 5500. This yields high-performance (up to 6

million pps) IP and IPX packet switching within the Catalyst 5500

platform.

High Performance Campus ATM Backbones

Administrators have deployed LAN Emulation (LANE)- based

ATM campus backbones using the Catalyst 5000/5500 series

switch with its OC-3 LANE modules at the edges (wiring closets)

of the network and the LightStream 1010/Catalyst 5500-based

ATM switching in the backbone. In order to scale these networks

to the next generation, it is required to not only scale the capacity

of the network but also the switching and routing services

provided by the network.

Cisco has scaled the capacity of the links interconnecting the

edge to the backbone by developing a new wire speed OC-12

uplink module while developing the Catalyst 8500 series to

provide high-density aggregation of these OC-12 uplinks. The

OC-12 uplinks can function as MPOA Clients (MPCs) in addition

to being normal LAN Emulation Clients (LECs) thus providing

the ability to scale the switching and routing services in the

network. The Cisco 7500/7200 series will provide MPOA Server

(MPS) capability which facilitates the establishment of

high-speed cut-through paths for IP forwarding. The Cisco 7500/

7200 series also deliver the default forwarding capabilities for

multiprotocol inter-VLAN trafﬁc.

This combination delivers the industry’s most

comprehensive ATM campus solution while integrating Cisco

IOS features such as PNNI routing for fast converging ATM

cores, SSRP for resilient LANE services, and so on.

Figure 4 Evolution of ATM Backbones

Benefits

One of the key beneﬁts of the Catalyst 8500 series is its

high-performance routing and switching capabilities. The

Catalyst 8510 is rated at 6 million pps and the Catalyst 8540 is

rated at 24 million pps for IP, IPX, IP multicast, and bridging.

Both platforms offer non blocking ATM switching capabilities

ranging from T-1 to OC-12 while the 8540 also provides for non

C5xxx

C7xxx C7xxx

C5xxx

5500/1010 5500/1010 C8540

Migrate to OC-12

MPOA/LANE in 5xxx

Migrate 5500/1010

to server farm/MAN

connectivity

Improve ATM performance

& OC-12/OC-48 capacity

with Catalyst 8540

Add MPCA server to

existing router

•

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