Chapter 4: Configuration Overview

IP/DNS

The Domain Name Server parameters used by the Router Option Module are specified here. The DNS server addresses can be ex- changed between PPP peers. When a connection occurs and IPCP is negotiated, the Router Option Module will get the DNS server ad- dresses from the PPP peer.

If the configured DNS server addresses (Server 1 and Server 2) are all zeros, the addresses from the PPP peer are used. In NAT mode, the PPP peer’s DNS addresses are always used. The DNS addresses set in Server 1 and Server 2 are offered to a PPP peer, if so requested.

DNS/Domain Name

Write security: 3; Read security: 5

This is a text string used to represent the domain name used by the Router Option Module.

DNS/Server 1

Write security: 3; Read security: 5

This is the IP address for the primary DNS device. It is the first serv- er to which domain name requests are sent.

DNS/Server 2

Write security: 3; Read security: 5

This is the IP address for the secondary DNS device. It is used as a back-up in case the primary address does not respond to the re- quest.

IP/UDP Relay

The Router Option Module can be configured as a relay agent for UDP broadcast packets. Normally, a router will not forward UDP broadcast packets. However, many network applications use UDP broadcasts to configure addresses, host names, and other informa- tion. If hosts using these protocols are not on the same network seg- ment as the servers providing the information, the client programs will not receive a response without enabling the UDP relay agent.

UDP Relay/Mode

Write security: 3; Read security: 5

When this option is set to On (def), the Router Option Module will act as a relay agent.

4-8

Router Option Module User Manual

61200350L1-1

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ADTRAN 1200350L1 user manual IP/UDP Relay, DNS/Domain Name, DNS/Server, UDP Relay/Mode

1200350L1 specifications

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