CISCO Router

CISCO RouterWELCOM E TO

What is Router

Router communicates two different network with each other

A Cisco router does not contain disk storage mechanisms such as hard disks. Therefore, the router requires certain hardware and firmware components for proper functioning.

Rear Panel

Power Supply

Serial Port

Roll over Cable

Serial Cable

Interface of Router

There are 5 interface of Router1. Serial2. Ethernet3. BRI4. Auxillary mode5. Consol mode

Mode of Router

1. User mode2. Privilege mode 3. Configuration mode4. Interface mode

Routing Protocol

1:- Distance Vector Routing Protocoli:- R.I.P.ii:-I.G.R.P.

2:- Link State Routing Protocoli:-O.S.P.F.

3:- Hybrid Vector Routing Protocoli:- E.I.G.R.P.

R.I.P.

Access Control List

Access Control List is two type

1. Standard

2. Extended

Standard Access List

For Host to Network BlockingRouter(config)#access-list 1 deany

10.0.0.0 Router(config)#access-list 1 permit

anyRouter(config)#ip access-group 1 in

For network blocking

Router(config)#access-list 1 deany 10.0.0.0 0.0.0.255

Router(config)#access-list 1 permit any

Router(config)#int e0 Router(config)#access-group 1 in

Extended Access List

Router(config)#access-list 101 deny tcp host 10.0.0.1 host 20.0.0.1 or 80

Router(config)#access-list 101 permit ip any any

Router(config)#int fa0/0Router(config)#ip access-group 101

out

VLAN (Virtual LAN)

In VLAN we must do configuration on Router and also on switch.

In Router ConfigurationRouter>Router>enRouter#config tRouter(config)#int fa0/0Router(config)#int fa0/0.1Router(config-sub if)#ip add 10.0.0.1

255.0.0.0Router(config-sub if)#encapsulation isl 1

VLAN

Router(config-sub if)# int fa 010.2Router(config-sub if)#int fa0/0Router(config-sub if)#no shut

On Switch

>en#config t(config)#vlan 1 name sales(config)#vlan 2 name purchase(config)#int e0/1(config)#vlan membership static 1(config)#int e0/2(config)#vlan membership static 1(config)#int e0/3

On Switch

(config)#vlan membership static 2(config)#int e0/4(config)#vlan membership static 2(config)#int fa0/26(config)#trunk on