RIP , Q & A part ----II

6: Why is a random timer associated with triggered updates? What is the range of this timer?

* The random timer, whose range is 1 to 5 seconds, prevents a "storm" of triggered updates during a topology change.

7: What is the difference between a RIP Request message and a RIP Response message?

* A Request message asks a router for an update. A Response message is an update.

8: Which two types of Request messages does RIP use?

* A Request message may either ask for a full update or in some special cases it may ask for specific routes.

9: Under what circumstances will a RIP response be sent?

* A Response is sent when the update timer expires, or upon reception of a Request message.

10: Why does RIP hide subnets at major network boundaries?

** RIP updates do not include the subnet mask of the destination address, so a RIP router depends on the subnet masks of its own interfaces to determine how an attached major network address is subnetted. If a router does not have an attachment to a particular major network address, it has no way to know how that major network is subnetted. Therefore, no subnets of a major network address can be advertised into another major network