GNS3 Commands

Common commands used in GNS3 for setting up network topologies and for troubleshooting.

Index

• GNS3 Commands
• Index
• VPCs
  • IP Address
  • Gateway Config
  • Ping (Connection Request)
• Router
  • Router Config
  • Routing
    • Static Routing
    • RIP Routing
    • EIGRP Routing
    • OSPF Routing

VPCs

IP Address

ip <ip-address>

Gateway Config

ip <ip-address> <gateway>

Ping (Connection Request)

ping <ip-address>

Router

Router Config

1. Switch to Config Mode

conf t

2. Switch to interface sub-mode

interface <interface>

Note: For fast ethernet interface, use fastethernet <interface> (i.e. fastethernet 0/0 or fastethernet 0/1).

3. Set IP Address

ip address <ip-address> <subnet-mask>

4. Enable interface

no shutdown

5. Exit interface sub-mode

exit

Routing

Static Routing

ip route <destination-ip-address> <subnet-mask> <gateway-ip-address>

RIP Routing

router rip
network <ip-address>
exit

EIGRP Routing

router eigrp <process-id> # process-id is a number between 1 and 65535
network <ip-address> <subnet-mask>
exit

Note: process-id is a number from 1 to 65535.

OSPF Routing

router ospf <process-id> # process-id is a number from 1 to 65535
network <IP-network> <wild card mask> area <area-id> # area id can be 0
exit

Note: process-id is a number from 1 to 65535.