How to exceed 255 ip address

[FMComputers]

How to exceed 255 ip address

[luis_cordova]

Hi @FMComputers ,

Could you be a little more specific about your problem?

If you mean to be able to address more than 255 devices, this can be achieved with a suitable mask for it.

With a mask /24 you can address up to 254 host

Network = 192.168.0.0

Host = 192.168.0.1 - 192.168.0.254

Broadcast = 192.168.0.255

With a mask /23 you can address up to 510 host

Network = 192.168.0.0

Host = 192.168.0.1 - 192.168.1.254

Boradcast = 192.168.1.255

Regards

[FMComputers]

How would you set this up in your router and in tcp/ipV4

[luis_cordova]

Hi  @FMComputers ,

Assuming that your network is connected to the f0 / 0 interface and you want to give IP parameters to your network of more than 255 hosts by DHCP:

Router(config)#int f0/0

Router(config-if)#ip address 192.168.0.1 255.255.254.0 <-IP address network gateway(192.168.0.1/23)

Router(config-if)#no shutdown

%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up

Router(config-if)#ex

Router(config)#ip dhcp excluded-address 192.168.0.1 <-excludes the gateway of the pool DHCP

Router(config)#ip dhcp pool TEST <-create the DHCP pool

Router(dhcp-config)#network 192.168.0.0 255.255.254.0

Router(dhcp-config)#default-router 192.168.0.1

Now, the devices connected to this interface can obtain up to 510 different addresses for the hosts.

Remember to mark the correct answers as solved, because that helps other users with similar doubts.

Regards

[FMComputers]

Can I keep my ip 192.168.2.0 and just change the Subnet to 255.255.254.0

[luis_cordova · Accepted solution]

Hi @FMComputers ,

Yes.
In that case, the parameters would be as follows:

Network = 192.168.2.0/23

Range = 192.168.2.1 - 192.168.3.254

Broadcast = 192.168.3.255

If there are other devices with the IP parameters assigned statically, be sure to update the mask in these as well.

Remember to mark the correct answers as solved, because that helps other users with similar doubts.

Regards