Маршрутизаторы Cisco: настройка, модели. Сетевое оборудование

Cisco routers have long and rightfully gained the trust of many users. Faithfully, for many years they have been transmitting traffic to various devices between the most different types of networks. The word "cisco" today has become synonymous with concepts such as quality and reliability. Moreover, the price for a Cisco router is always kept within the acceptable range.

Characteristics of Cisco Routers and Switches

Various Cisco switch and router series are currently widely used . The series includes several models that differ in a number of characteristics. However, all of them can be divided into the following large groups:

• Portable routers. They are designed for networking small and medium-sized.

• ISR – Ethernet . , .

• . , . .

OSI. . Cisco VPN- : L2TP, DMVPN, IPsec, GRE PPTP. VPN Cisco .

Cisco 2960 , :

• L2;
• – 8, 24 48;
• PoE, PoE+;
• ;
• , – 100 1 ;
• , – .

Cisco , . , , . - . Cisco : – .

Cisco

:

1. Wi-Fi . .
2. - Cisco. , – . 350 30 000 .
3. Cisco- Firewall IPS. – , .
4. . Cisco. , .
5. Cisco VPN. , . .

, . . . .

COM- . . USB-COM. , , . , USB.

: 9600/8-N-1. , : enable. EXEC. , : erase startup-config. : reload. , , .

, , .

Cisco

Cisco, Windows . . :

• , Cisco ;
• ;
• , Linux Unix;
• , , NO;
• 0 () 15 (), : enable __.

SSH

, SSH . SSH - . SSH Cisco, :

• enable.
• .
• , : router# configure terminal.
• , : router(config)# ip domain name mydomain.ru.
• : router(config)# crypto key generate rsa.
• , : router(config)# username _ privilege 11 password 7 my_passwd. Cisco 11- , . , 11, - 15.
• : router(config)# aaa new-model <Enter> route (config)# line vty 0 4 . – 0 4.
• : router(config-line)# transport input ssh <Enter> router(config-line)# logging synchronous SSH .
• , . : router(config-line)#exit <Enter> router(config)# exit <Enter> router# write.

Cisco

Cisco, :

conf t

interface fa0/2.

Cisco:

• Access Port. – , , . switchport mode access, access, vlan 1. switchport access vlan 310, vlan 310.
• Trunk port. , – Ethernet , . . , : switchport mode trunk – 2950. 2960 :

switchport mode trunk

switchport trunk encapsulation dot1q.

vlan, : switchport trunk alloved vlan 310, 555 – vlan;

• Hybrid port. Cisco , - , nativ vlan. :

switchport mode trunk ( )

switchport trunk alloved vlan 310,555 ( , vlan 310 555)

switchport trunk native vlan 310 ( vlan 310, – 555).

Cisco 2960 – . .

, , , .

. : Router#erase startup-config. : Reload. , .

, Cisco . - . : config-register 0x2102.

, Cisco, – . , , .

Cisco :

• ;
• , .

, , . Cisco , . , :

1. : #copy running-config startup-config.
2. FTP- : #copy running-config tftp://_.

Cisco

Cisco , . , : , , .

, , , Cisco:

1. Windows – Hyper Terminal. Windows . Hyper Terminal, « Windows», « » «». «» «» Hyper Terminal.
2. Putty – Windows Linux, . .
3. Cisco Device Connections Program – Cisco, . , Cisco. Cisco Device Connections Program , , .
4. – Putty – Linux Minicom.

, - , . , . -. Java, Java. Jre. , SDM – , .

.

SDM, IP- vlan1. HTTPS.

, -. – SDM, .

Linksys

Linksys, . : 192.168.1.1. .

, : admin – admin. Administration. .

Wireless – Basic Wireless Setup, (Manual). .

- , .

, . , «password» , «» snmp . «secret». , «password», , «secret», .

: Router(config)#enable secret <i>PASS</i>, PASS . .

Depending on one or another model of Cisco equipment, the hardware and software settings may vary, but in general terms the picture looks exactly as described above.