IOS BACKUP

IOS BACKUP

To take backup of the IOS and router configuration (like the Running configuration and the Startup configuration) follow the procedure below:

First install the TFTP server software on a PC in the network and at the time of taking backup the software should be running (Application is ON) on the PC where it is installed. Then Login to the router and go to the privilege mode

To take the backup of the startup configuration use the following command:

CISCO DISCOVERY PROTOCOL - CDP

CISCO DISCOVERY PROTOCOL - CDP

CDP is enabled by default on all Cisco devices. It is used for troubleshooting connectivity between Cisco devices. To check the output of Cisco discovery protocol (CDP) use the following commands.

The following command will show CDP hello and the hold-down interval.

Syntax:

Router#show cdp

KOLKATA#sh cdp
     Global CDP information:
     Sending CDP packets every 60 seconds
     Sending a holdtime value of 180 seconds
     Sending CDPv2 advertisements is enabled

The following command will show the brief information of the directly connected Cisco devices Like hostname, interface to which it is connected, the model of the device etc.

EXTENDED ACCESS CONTROL LIST

EXTENDED ACCESS CONTROL LIST 

Configure Extended ACL as follows

Syntax:

Router(config)#access-list <no.> permit/deny <protocol> <source ip> <source wildcard mask> <destination ip> <destination wildcard mask> [operator] [port]

To implement ACL on a Interface

Syntax:

Router(config)#interface <type> <no.> 

Router(config-if)#ip access-group <no.> in/out

On Kolkata:

SCENARIO 

Configuration of an access-list on KOLKATA such that Deny Kolkata LAN from accessing HTTP Server in LAN of Mumbai LAN i.e 192.168.2.0 and also deny ping to Delhi LAN i.e 192.168.1.0 .

STANDARD ACCESS CONTROL LIST

STANDARD ACCESS CONTROL LIST

(STANDARD ACL)

Configure Standard ACL as follows:

Syntax:

Router(config)#access-list <no.> permit/deny <source ip> <source wildcard mask>

To implement ACL on a Interface

Syntax:

Router(config)#interface <type> <no.> 

Router(config-if)#ip access-group <no.> in/out

On Kolkata:

SCENARIO 

Configuration of an access-list on KOLKATA such that 192.168.0.4 should not communicate with 10.0.0.0 network.

Open Shortest Path First (OSPF)

Open Shortest Path First (OSPF)

To configure OSPF routing protocol use the following command:

Syntax:

Router(config)#router ospf <process id>

Router(config-router)#network <network ID> <wildcard mask> area <area no>

Configurations of Routers are given below: