ServiceLink Manual

Chapter 6. Installing And Conﬁguring Your SME Server V5 with ServiceLink Software

If you have fewer than 180 machines on your local network and no reason to prefer one range of IP addresses over another,

you can simply accept the defaults for these screens.

If the defaults are not appropriate to your situation, you may need a bit of background to understand how to conﬁgure this range. For

example, if you entered the server address of 192.168.1.1 and subnet mask of 255.255.255.0 (the default settings), the conﬁguration

script will infer that your "network" is 192.168.1.0 and that valid addresses are from 192.168.1.1 to 192.168.1.254. If you entered

some number such as 192.168.100.1 for the server, the script will infer that your valid addresses will be 192.168.100.1 through

192.168.100.254.

If you enter the number "192.168.202.65" as the "beginning of DHCP address range", as shown below, the ﬁrst computer served by

the DHCP server would receive the IP address of 192.168.202.65. The second computer would receive the IP address of

192.168.1.66, and so on.

If you specify that the end of the range is "192.168.202.250", as shown below, then the last computer able to receive DHCP service

would be assigned the IP address 192.168.202.250. Once all the available IP addresses within that range are assigned, your DHCP

server will no longer serve IP addresses to new computers.

6.13.2. Important issues about the DHCP address range

The usual range maximum is 254: Normally the "end of DHCP address range" cannot exceed "254". If you have more than 253

computers on your network and would like to exceed this range maximum, you can use a Class B or Class A non-routable address

for your network. In this case the number entered in the "end of range" ﬁeld needs to be calculated and entered a little differently. If

you fall into this category, we recommend you contact Mitel Networks Corporation or a Mitel Networks Corporation partner for

assistance. Note that the default range maximum is 250. As explained below, this is to allow a few static addresses at the end of the

range.

The local IP address assigned to your server itself must fall outside of this range: In other words, you should not assign your

server a non-routable IP address that is also assignable by the DHCP service to another computer on your network. If your server is