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Forum Discussion
DHCP Reservations - Netgear Support REALLY?????
We are trying to use DHCP reservations in a GSM7328S Switch but regardless of what we seem to configure, the client PC is not acquiring the IP address we want it to receive. We logged a support ca...
In the GSM7328 Switch, you can't define a starting and ending DHCP Pool.
You define a DHCP pool for an entire subnet, then exclude ranges of addresses within the subnet.
In our actual configuration, we have 192.168.9.0 as the network address and then exclude 192.168.9.1 - 192.168.9.125. Therefore our DHCP Pool starts at 192.168.9.126 and ends at 192.168.9.254. So if we need to define an IP address "outside" of the DHCP IP Pool, how do we do that? It would seem impossible, yet the switch does allow for DHCP Reservations/Manual Bindings.
Now I had to check wikipedia for the definition of DHCP reservation:
static allocation: The DHCP server allocates an IP address based on a table with MAC address/IP address pairs, which are manually filled in (perhaps by a network administrator). Only clients with a MAC address listed in this table will be allocated an IP address. This feature, which is not supported by all DHCP servers, is variously called Static DHCP Assignment by DD-WRT, fixed-address by the dhcpd documentation, Address Reservation by Netgear, DHCP reservation or Static DHCP by Cisco and Linksys, and IP reservation or MAC/IP binding by various other router manufacturers.
So how can it be called DHCP reservation if the IP address is outside of the DHCP pool. The DHCP Serer should not be able to issue IP addresses outside of it's pool.
You define a DHCP pool for an entire subnet, then exclude ranges of addresses within the subnet.
In our actual configuration, we have 192.168.9.0 as the network address and then exclude 192.168.9.1 - 192.168.9.125. Therefore our DHCP Pool starts at 192.168.9.126 and ends at 192.168.9.254. So if we need to define an IP address "outside" of the DHCP IP Pool, how do we do that? It would seem impossible, yet the switch does allow for DHCP Reservations/Manual Bindings.
Now I had to check wikipedia for the definition of DHCP reservation:
static allocation: The DHCP server allocates an IP address based on a table with MAC address/IP address pairs, which are manually filled in (perhaps by a network administrator). Only clients with a MAC address listed in this table will be allocated an IP address. This feature, which is not supported by all DHCP servers, is variously called Static DHCP Assignment by DD-WRT, fixed-address by the dhcpd documentation, Address Reservation by Netgear, DHCP reservation or Static DHCP by Cisco and Linksys, and IP reservation or MAC/IP binding by various other router manufacturers.
So how can it be called DHCP reservation if the IP address is outside of the DHCP pool. The DHCP Serer should not be able to issue IP addresses outside of it's pool.
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