Multi-Tech Systems MTASR1-100 manual RouteFinder Software

Chapter 4 - RouteFinder Software

An IP address is a combination of a network number and a host number or ID. IP address masks are used to specify the network or subnet portion of the IP address. IP addresses and masks are 32-bit values. These are usually provided in what is known as the dotted decimal notation.

The net mask specifies the network or subnet portion of an IP address. The net mask is a 32-bit value presented in a dotted decimal notation. From the Ethernet IP Setup tab you can switch to the WAN IP Setup tab or the Advanced IP Setup tab.

The WAN tab allows you to disable or enable IP routing on the WAN port, change the port IP Address, mask, and remote IP address. If the WAN port is configured for frame relay, this dialog box allows you to add logical WANs. How the logical IP WAN ports are configured is controlled by the WAN Port Setup dialog box.

To add logical WAN in a frame relay configuration, click the Add(+) button and the next WAN number is displayed in the List of Logical WANs window on the left side of the WAN dialog box. To delete the last logical WAN assigned, click the Delete (-) button.

RIPv2 has enhanced “explicit” netmask information and supports several new features including external route tags, subnet masks, next-hop addresses, and authentication. Subnet mask information makes RIP more useful in a variety of environments and allows the use of variable subnet masks on the network. Support for next-hop addresses permits the optimization of routes in an environment that uses multiple routing protocols. For example, when RIPv2 is being run on a network along with another IGP, and one router is running both protocols, then that router can indicate to the other RIPv2 routers that a better next-hop than itself exists for a given destination.

The Authentication group is the RIPv2 mechanism for authenticating the sender of the routing eliminates the vulnerability of the routing infrastructure. This authentication scheme is essentially the same mechanism provided by OSPF. Currently, only a plain-text password is defined for authentication.

For Plain Text RIPv2 authentication, the maximum length of the password is 16 characters; however, Message Digest authentication can have a key id field of up to 50 characters.

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