mrshahin Newbie ✭
I am short on dhcp ip and want to extend the current dhcp scope, the current scope is
how can I double this range? I tried the /21 but get the error that the gw is not in the same range!!
Category: Entry Level Firewalls
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@mrshahin I guess you did not changed the subnet mask of your network interface from 255.255.252.0 to 255.255.248.0? This causes this message. The DHCP scope will be automatically adjusted after giving the network interface the correct subnet mask.
Tested on 18.104.22.168 a minute ago.
@BWC Thank you for your reply,
I think I already done that,
So you mean I should change the scope to 22.214.171.124-172.20.4.254 and use the subnet 255.255.248.0 right?
The subnet mask of your DHCP scope should be already in sync with the related interface settings and the scope goes from 126.96.36.199 - 188.8.131.52 (or up to 184.108.40.206) ... 172.20.4.254 would be out of the subnet :)
the IP of the X0 is 220.127.116.11 en the subnet is 255.255.252.0
is this menas the we sohlud first change the subnet of the X0 to 255.255.248.0 and after that change the scope of the dhcp to 18.104.22.168 - 22.214.171.124 (or up to 126.96.36.199) is this correct??
@mrshahin yes, this is what I tried to explain, change subnet of X0 and then configure the DHCP scope.
But make sure that your clients will get a new DHCP lease as well, because they need to honor the subnet mask too.
this is a wifi subnet/vlan shouldn't clients get the new subnet when their dhcp lease is expired? or they must disconnect and reconnect to wifi again?