R7800, /23 LAN mask. Config advice to get DHCP pool & GW at either end of the subnet. Voxel f/w.

[Nickat1]

Hi, I have an R7800. I've configured a /23 mask for the LAN. I would like my router ip/gateway to be in the bottom half of the subnet and the DHCP pool to be in the upper half. In the GUI I can only put the router IP and DHCP pool in the same /24 subnet. Can I edit the DHCP config from the CLI, and if so, what commands do I need to use. I've tried looking for a command line reference but I can't find anything for the R7800.

I'm running a Voxel firmware, R7800-V1.0.2.97SF.

Thanks.

 

[microchip]

Not possible

 

[Nickat1]

Not possible

Thanks microchip. Would you explain what's preventing me from doing it please.

Thanks.

 

[L&LD]

Can you use the actual IP addresses so I could understand what you'd like to do?

I use my routers on the x.x.x.254 address and the devices are all below x.x.x.150.

 

[Nickat1]

Can you use the actual IP addresses so I could understand what you'd like to do?

I use my routers on the x.x.x.254 address and the devices are all below x.x.x.150.

Hi L&LD,

I want to use a /23 subnet for my LAN, so for example 192.168.101.1 to 192.168.102.254. I would like to set my router IP/GW to 192.168.101.1 and use other n.n.101.n IPs for statics, and set my DHCP pool to be 192.168.102. 1 - 254. The R7800 GUI forces the the GW and DHCP pool to be in the same /24 subnet, so both in either 101 or 102 but not split across the larger subnet.

Thanks.

 

[sfx2000]

I want to use a /23 subnet for my LAN, so for example 192.168.101.1 to 192.168.102.254.

Can't do your range with a /23 - see below

ipcalc 192.168.101.1/23
Address:   192.168.101.1        11000000.10101000.0110010 1.00000001
Netmask:   255.255.254.0 = 23   11111111.11111111.1111111 0.00000000
Wildcard:  0.0.1.255            00000000.00000000.0000000 1.11111111
=>
Network:   192.168.100.0/23     11000000.10101000.0110010 0.00000000
HostMin:   192.168.100.1        11000000.10101000.0110010 0.00000001
HostMax:   192.168.101.254      11000000.10101000.0110010 1.11111110
Broadcast: 192.168.101.255      11000000.10101000.0110010 1.11111111
Hosts/Net: 510                   Class C, Private Internet

 

[Nickat1]

Can't do your range with a /23 - see below

ipcalc 192.168.101.1/23
Address:   192.168.101.1        11000000.10101000.0110010 1.00000001
Netmask:   255.255.254.0 = 23   11111111.11111111.1111111 0.00000000
Wildcard:  0.0.1.255            00000000.00000000.0000000 1.11111111
=>
Network:   192.168.100.0/23     11000000.10101000.0110010 0.00000000
HostMin:   192.168.100.1        11000000.10101000.0110010 0.00000001
HostMax:   192.168.101.254      11000000.10101000.0110010 1.11111110
Broadcast: 192.168.101.255      11000000.10101000.0110010 1.11111111
Hosts/Net: 510                   Class C, Private Internet

Hi sfx2000,

Sorry, complete brain fade with the subnet boundaries. So, using the correct /23 subnet, is this possible to set this up on Netgear R7800 using the cli. I'm running the latest version of Voxel's firmware.

Thanks.

 

[sfx2000]

Sorry, complete brain fade with the subnet boundaries. So, using the correct /23 subnet, is this possible to set this up on Netgear R7800 using the cli. I'm running the latest version of Voxel's firmware.

Not sure how to do this via cli on voxel - but the webui should have the option there to set the LAN netmask...

How do I change the LAN TCP/IP settings on my Nighthawk router?

How do I change the LAN TCP/IP settings on my Nighthawk router?

kb.netgear.com

On openwrt - it's a one liner... and the R7800 is based on QSDK, which in turn is based on OpenWRT - uci might be there

uci set network.lan.netmask='255.255.254.0'

 

[Nickat1]

Not sure how to do this via cli on voxel - but the webui should have the option there to set the LAN netmask...

How do I change the LAN TCP/IP settings on my Nighthawk router?

How do I change the LAN TCP/IP settings on my Nighthawk router?

kb.netgear.com

On openwrt - it's a one liner... and the R7800 is based on QSDK, which in turn is based on OpenWRT - uci might be there

uci set network.lan.netmask='255.255.254.0'

Thanks. The webui forces the router IP/GW and DHCP pool to be in the same /24 subnet, so if it's possible to use a /23 subnet it would have to configured via the cli.