61200375L1-1 TA 850
T1 RCU VoATM UIG/61200376L2-31A Page 36 of 72
UDP Relay
This menu configures the 850 to act as a UDP relay agent for applications requiring a response from UDP hosts that are not on the same network segment as their clients.
Mode
When this option is set to ON (def), the TA 850 will act as a relay agent.
UDP Relay List
Up to four relay destination servers can be specified in this list.
This is the IP address of the server that will re- ceive the relay packet.
The following standard UDP protocols are relayed when set: DHCP, TFTP, DNS, NTP (Network Time Protocol, port 123, NBNS (NetBios Name Server, port 137), NBDG (NetBIOS Datagram, port 138), and BootP.
When set, the UDP port (1 to 65535) can be specified in the UDP Port columns (up to three per server).
Used for specifying UDP ports to be relayed.
These fields only apply when UDP PORT TYPE is
set to SPECIFIED.
Bridge
The BRIDGE menu is used to set up the bridge parameters for the 850. The bridging function runs at the Media Access Control (MAC) level which allows any protocol packets that run over Ethernet to be for- warded. Bridging can run concurrently with IP. However, when IP routing is active, IP packets (which include ARP packets) are not bridged.
Mode
This is used to enable the bridge function.
Address Table
The 850 automatically maintains a table of MAC addresses detected and associates those addresses with the LAN or WAN port from which they were received.
AGING | The maximum time an idle MAC address remains in |
| the table before being removed. The value is in min- |
| utes. |
FORWARD POLICY | When this parameter is set to UNKNOWN (def), any |
| bridge packet with a destination MAC address that |
| is not in the bridge table is forwarded to all other |
| ports. When set to KNOWN, the packet with the un- |
| known destination MAC address is dropped and is |
| not forwarded. |
TA 850 User Manual | © 2001, ADTRAN, Inc. |
