User Guide

IP Configuration Screen
Local Management User’s Guide 1-45
9. Use the ENTER key to toggle the entry. RIP1 is the default, the other choices are RIP2,
DON’T SEND, and RIP1 COMPATIBLE. Make the proper selection for your network.
10. Use the arrow keys to highlight the RIP receive info option.
11. Use the ENTER key to toggle the entry. RIP1 is the default, and the other choices are RIP2,
RIP1/RIP2, and DON’T RCV.
12. Use the arrow keys to highlight the RIP2 auth type option.
13. Use the ENTER key to toggle the entry. NONE is the default, and the other choices are
PASSWORD and MD5.
14. If PASSWORD or MD5 is chosen, the next selection is the user defined choice of the password
in the RIP2 auth string field. Use the arrow keys the highlight the RIP2 auth string field.
15. The password, up to 16 characters in length, may be entered here.
16. The +PORT- command can be used to go to the next available port, when there is a port
configured. Use the SPACE bar to advance to the next port for configuration. Repeat the entire
procedure as above in order to configure the new selected port.
IP OSPF Configuration
OSPF (Open Shortest Path First) is a Link-State Protocol. OSPF distributes routing information
between routers belonging to a single Autonomous System (AS). In an Autonomous System,
routers exchange routing information through a common routing protocol.
An Autonomous System may contain one or more networks, but each network within the AS may
or may not support subnetting. Every OSPF routing domain must have a “Backbone”. An OSPF
backbone distributes routing information between areas in an OSPF routing domain. The
backbone of an OSPF routing domain is an OSPF area possessing an area ID of 0.0.0.0. Because
OSPF protocol only broadcasts link state updates when topology has changed, it is considered
“quiet” when compared to RIP protocol, which has to periodically send a portion, or all of its
routing table to its neighbors.
Convergence (the time it takes to recalculate routing tables) under OSPF protocol is instantaneous
and not periodic because of the use of IP Multicast to send the link-state updates. Updates are only
sent when routing changes occur instead of periodically, ensuring better use of available
bandwidth.
OSPF employs “flooding” to exchange link-states with other routers. Any change in routing
information is flooded to all routers in the network. The use of “areas” puts a boundary on the
explosion of link-state updates. All routers within an area will have the exact link-state database.