Bad mask for IP 192.168.0.0 Cisco Packet Tracer

Question

I have to do next task: connect three LAN networks with Cisco packet tracer. I have to use net addresses 192.168.0.0/24; 192.168.10.0/24; 192.168.20.0/24. When I am trying to set router address 192.168.0.0 and mask 255.255.255.0 I have error message for bad mask. How to solve that issue? My code:

Router>
Router>enable
Router#conf t
Router(config)#int fa 0/0
Router(config-if)#ip add 192.168.0.0 255.255.255.0
Bad mask /24 for address 192.168.0.0

serverAdmin123 · Accepted Answer · 2019-06-02T16:20:08.070

3

Simple answer is 192.168.0.0 is not a valid ip address to use. It is a network Address. Please change your Ip address between 192.168.0.1-192.168.0.254. Then It will be solved.

Network address is explained by techopedia as follows

A network address is any logical or physical address that uniquely distinguishes a network node or device over a computer or telecommunications network. It is a numeric/symbolic number or address that is assigned to any device that seeks access to or is part of a network.

Host address is

The physical address of a computer in a network. Host address is the IP address of the machine.

edited Jun 02 '19 at 16:20

answered Jun 02 '19 at 16:07

serverAdmin123

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But why I have that instructions in my task? – IntoTheDeep Jun 02 '19 at 16:10
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It says use it as anetwork address. Not a host address – serverAdmin123 Jun 02 '19 at 16:10
Where I need to set those addresses? – IntoTheDeep Jun 02 '19 at 16:11
It will refer your ip address range. That's all. `192.168.0.0/24 ` mean you are able to use 254 address for your host. Generally first address is network address and last one will be Broadcast address. – serverAdmin123 Jun 02 '19 at 16:15
https://networkengineering.stackexchange.com/questions/7106/how-do-you-calculate-the-prefix-network-subnet-and-host-numbers – serverAdmin123 Jun 02 '19 at 16:16
So I need to use host addresses from 192.168.0.1 to 192.168.0.255? – IntoTheDeep Jun 02 '19 at 16:31
yes. You need to use as i explained. Especially You need to learn more about Subnet Masking – serverAdmin123 Jun 02 '19 at 16:31

Bad mask for IP 192.168.0.0 Cisco Packet Tracer

1 Answers1