Network device configuration and management----debugging Cisco Catalyst Switches

Theoretical learning

problem 1 : How does the switch work?

By learning the computer MAC address of each interface, it realizes the data communication of each computer, and the routing table of the router is similar, the switch is realized by the Mac-port mapping table.

problem 2 : Two layer switch, three layer switch, router difference?

Two-layer switch: For switching, LAN, WAN switching only

Layer Three switch: Also known as the routing switch, with the dual functions of routing and switching, only for local area network, is an Ethernet switch, by dividing the VLAN logical interface to achieve the purpose of subnetting, support VLAN, VTP, line aggregation, STP, etc.

Routers: Routers support a wide range of WAN access, directly through the physical interface to achieve subnetting, VPN and NAT special technology, each interface must be configured into different subnets, the forwarding speed is slow.

problem 3 : Catalyst switch features?

Low-end Series products: Divided into 1900,2900 Two,2900 increase the interface speed, improve desktop access speed

Mid-range Series: easy to set up and manage the switch via browser

High-End Series products : The Formation of the future development of the architecture, to provide operational consistency, improve IT Infrastructure Utilization, improve network uptime, to build a high-bandwidth, high-reliability network protection.

Work Assignment Description

A company has purchased a Cisco Catalyst 2950 Switch to build a small local area network that implements the basic communication capabilities of the corporate intranet, using HyperTerminal and telnet The switch is initially debugged separately.

Work task implementation

network topology design according to basic task requirements (paste PT 's topology map)

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Basic configuration of the switch

(1) Configure the management IP address of the switch and Telnet login information

switch>en

Switch#config

Configuring from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with cntl/z.

Switch (config) #in

Switch (config) #interface vlan 1

Switch (config-if) #ip add

Switch (config-if) #ip address 192.168.1.1 255.255.255.0

Switch (config-if) #no sh

%link-5-changed:interface Vlan1, CHANGED state-to-up

%lineproto-5-updown:line protocol on Interface Vlan1, changed

Switch (config-if) #exi

Switch (config) #en

Switch (config) #enable Pass

Switch (config) #enable password Cisco

Switch (config) #line vty 0 4

Switch (Config-line) #pass

Switch (config-line) #password Cisco1

Switch (Config-line) #login

Switch (Config-line) #exi

Switch (config) #exi

switch#

%sys-5-config_i:configured from console by console

switch#

( 2) test with telnet login switch.

On the computer PC1 first ping the switch management address 192.168.1.1, you can ping through.

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Enter the command under DOS telnet 192.168.1.1 can log into the switch, enter the password cisco1 can go into the switch general user mode, Enter the Cisco Password to enter privileged mode

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This article is from the Pisces Shan Light blog, so be sure to keep this source http://shan123.blog.51cto.com/9976131/1664191

Network device configuration and management----debugging Cisco Catalyst Switches