Users Manual

SME VOIP SYSTEM GUIDE 1.1 113 | P a g e
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Linux Platform:
Troubleshooting DHCP, check the following:
1) Incorrect settings in the /etc/dhcpd.conf file such as not defining the networks for which the DHCP server is
responsible;
2) NAT/Firewall rules that block the DHCP bootp protocol on UDP ports 67 and 68;
3) Routers failing to forward the bootp packets to the DHCP server when the clients reside on a separate network.
Always check your /var/logs/messages file for dhcpd errors.
4) Finally restart the dhcpd service daemon
11.5 TFTP Server Setup
There are several TFTP servers in the market place; in this section, we describe how to setup a commonly used TFTP
Server.
TFTP Server Settings
The administrator must configure basic parameters of the TFTP application:
Specify UDP 69 port – for TFTP incoming requests and TCP 12000 – for remote management of the server. For file
transmission, the server opens UDP ports with random numbers. In case the option Enable NAT or firewall support is
activated on the server, the server uses the same port for files transmission and listening to the TFTP incoming
requests (UDP 69 port on default).
Specify the interface bindings, TFTP root directory, port which the TFTP Server will listen, timeout and number of
retries, and TFTP options supported by the server.
Screenshot