47
SitePlayer Telnet User’s Manual
Adding Route to Windows so Link Local Devices
Can be Accessed
Windows supports Link Local (LL) addressing. If you are connected to a network and an IP address cannot
be obtained manually or automatically (via DHCP), Windows will choose a LL address. These addresses are
in the form 169.254.x.y, where x.y are randomly chosen numbers such that they are unique on the network.
While Windows is using the LL address it maintains a route to the LL address subnet. This means that it can
communicate with LL devices such as SitePlayer.
In most cases once Windows obtains an IP address via DHCP, SitePlayer will also obtain a DHCP address and
accessing the device is not an issue. There may be cases, however, where the DHCP server does not assign
an IP address to SitePlayer. This can occur when DHCP has been disabled in SitePlayer or the DHCP server’s
IP address allocation rules prevent an address from being assigned. In these cases, SitePlayer can only be ac-
cessed via it’s LL address.
Unfortunately, once Windows obtains a non LL address (either manually or through DHCP), it removes its
route to the LL address subnet. This has the effect of not being able to communicate with devices which are
addressed only through 169.254.x.y. The easiest way around this is to add a route to the LL subnet so that
Windows knows where to send packets that are addressed to LL devices. This may be accomplished by run-
ning COMMAND.COM and typing ROUTE PRINT
You will need the interface IP address under the “Interface” column before the “Default Gateway” line. In this
example it is
192.168.2.155
.
Type the following command substituting your interface IP address for
192.168.2.155
:
ROUTE ADD 169.254.0.0 MASK 255.255.0.0
192.168.2.155
This will add a route so that link local devices can be accessed. You will need to do this every time the com-
puter is rebooted, unless you make the route permanent by typing
ROUTE -p ADD 169.254.0.0 MASK 255.255.0.0
192.168.2.155
Summary of Contents for SitePlayer Telnet Series
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