User Guide

Local Management
1-38 Local Management User’s Guide
Enabling IP Forwarding on a Port
By default, IP Forwarding is disabled on each router port. Your device cannot begin forwarding IP
data packets on any router port until you enable IP Forwarding on that port.
To enable IP Forwarding on a router port, complete the following steps:
1. Use the arrow keys to highlight the IP Forwarding option.
2. Use the ENTER key to toggle the entry to ENABLED.
3. Use the arrow keys to highlight the SAVE command field at the bottom of the screen and then
press ENTER. The message “SAVED OK” displays.
Configuring the UDP Broadcast Redirector
To locate a server that can provide a particular network service, many IP hosts rely on the use of
LAN broadcasts to send UDP service requests. The UDP port number contained in the broadcast
request packet identifies the service being requested. Table 1-4 shows the port numbers and their
corresponding requested services.
Table 1-4 UDP Port Numbers
UDP Port # UDP Services
37 Time
42 Host Name Server
53 Domain Name Server
65 TACACS-Database Service
67 Bootstrap Protocol/Dynamic Host Control Protocol Server
68 Bootstrap Protocol/Dynamic Host Control Protocol Client
69 Trivial File Transfer
137 NETBIOS Name Server
138 NETBIOS Datagram Server
111 Sunrpc (NIS)