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Level 1: Cadet

Smart Modem Gen 2 - Change the Subnet

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Is there any way to change the default subnet on the Telstra Smart Modem Gen 2. 

 

Modem Make Model: Technicolor DJA0231

Firmware 18.1.c.0514-950-RB

 

Need to change from 192.168.0.0/8 (255.255.255.0) to something else as I use this subnet on our internal network on a router that plugs into the Telstra modem

 

Same as this question - https://crowdsupport.telstra.com.au/t5/modems-hardware/changing-modem-ip-and-dhcp-range/td-p/826533

 

It looks like you can change the IP address for the device can be changed from 192.168.0.1, but not sure about changing the subnet.

 

Under Advanced View > Local Network 

 

BTW It's dreadfully slow talking to the http://192.168.0.1/gateway.lp - etc which seems bizarre since it my local network...

 

Thanks 

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Level 24: Supreme Being
Level 24: Supreme Being
Accepted Solution

Re: Smart Modem Gen 2 - Change the Subnet

You should not need to change the Local Network subnet. The Local subnet is actually the subnet mask. All you need to change is the Local IP address and the DHCP start address and DHCP end address. Example change to

 

Local Device IP address: 10.0.0.1

DHCP Start Address: 10.0.0.2

DHCP End Address: 10.0.0.254

 

The Network address will automatically change to 10.0.0.0

 

The slow speed might be due to having another device on your network with the same IP address as modem.

 

 

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Level 24: Supreme Being
Level 24: Supreme Being
Accepted Solution

Re: Smart Modem Gen 2 - Change the Subnet

You should not need to change the Local Network subnet. The Local subnet is actually the subnet mask. All you need to change is the Local IP address and the DHCP start address and DHCP end address. Example change to

 

Local Device IP address: 10.0.0.1

DHCP Start Address: 10.0.0.2

DHCP End Address: 10.0.0.254

 

The Network address will automatically change to 10.0.0.0

 

The slow speed might be due to having another device on your network with the same IP address as modem.

 

 

View solution in original post

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Level 1: Cadet

Re: Smart Modem Gen 2 - Change the Subnet

Great thanks for that.  Expected to need to change the network as well as the address of the device - but worked fine as per instructions above.

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