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BCMSN

642-812

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CAN

Campus Area Network

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Shared Network Module

F

I

G

H

A

D

B

C

E

Host A is E0

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Campus Area Network

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Shared Network Module

F

I

G

H

A

D

B

C

E

Reply to Host A

Host A is E0

Host B is E0

Host A is E0

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Shared Network Module

F

I

G

H

A

D

B

C

E

What is MAC Of1.10

(ARP)

Send

Broadcast

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LAN Segmentation Module

F

I

G

H

A

D

B

C

E

VLAN 10

VLAN 20

VLAN 30

VLAN 40 VLAN 50

VLAN 60

VLAN 70

VLAN 80

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80/20 Rule

VLAN 10

Sales

VLAN 20

Accounts

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20/80 Rule

VLAN 10

Sales

VLAN 20

Accounts

VLAN 100

Server

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Hardware-based bridging

Wire-speed performance

High-speed scalability Low latency

MAC address

Layer 2 Switching

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Optimal path determination

Traffic management

Layer 3 security

Benefits of Routing

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Hardware-basedpacket forwarding

High-performancepacket switching

Flow accounting

Layer 3 security

Policy deployment

Layer 3 Switching

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Combines functionality of:

Layer 2 switching

Layer 3 switching

Layer 4 switching

High-speed scalability

Low latency

Multilayer Switching

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Predictable Network Model

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Enterprise Campus Infrastructure

Switch Block

ManagementBlock

SERVER Block

WAN Block

Block A Block B Block C

OO

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Small Enterprise

Switch Block

Clients Attached Layer 2E/Fa

Server FarmFa/Gi

Layer 2

/Layer 3

ZOOM

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Medium EnterpriseSwitch Block

Clients AttachedLayer 2

Layer 3 Switching

Server FarmLayer 2

ZOOM

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Large CAN

Switch Block

SERVER Farm

Block A Block B Block C

CoreLayer 2/3

DistributionLayer 3

AccessLayer 2

DistributionLayer 3

AccessLayer 2

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Ethernet

ZOOM

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Provides client access to the network

Fast Ethernet

ZOOM

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Built on Ethernet principles

100 Mbps

Uses same frame types, lengths, and formats

Still CSMA/CD Same MAC layer, new physical layer

Fast Ethernet

ZOOM

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Gigabit Ethernet

Enhances client/server performance across theenterprise

Connects distribution-layer switches in eachbuilding with a central campus core

ZOOM

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10 Gigabit Ethernet

40 Km

ZOOM

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Cisco Long-Reach Ethernet

ZOOM

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Metro Ethernet

Leverages service provider network or existing,unused optical fiber (dark fiber) for metro Ethernetconnectivity

Supports any IP application

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Getting Started with Catalyst Switches

ZOOMComparing CatOS and Cisco IOS

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Comparing CatOS and Cisco IOS(Native Mode)

CatOS Configures Layer 2 switching

Hybrid Mode CatOS for Layer 2 switching

IOS for Layer 3

Cisco IOS (Native Mode) Configures Layer 2/Layer 3 switching

Runs on a device that can have a port that acts like

a router port (Layer 3) or like a switched port(Layer 2)

Available on newer Catalyst switches

ZOOM

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Cisco IOS File System and Devices