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16.
What is IP RIP?
IP RIP is a true distance vector routing protocol that sends its complete routing table out all active interfaces every 30 seconds. IP RIP uses a hop count as its metric to determine the best path to a remote network. The maximum allowable hop count is 15, meaning that 16 is unreachable. There are two versions of RIP. Version 1 is classful, and version 2 is classless. IP RIP can load-balance over as many as six equal-cost paths.
17.
What four timers does IP RIP use to regulate its performance?
Here are the four timers that IP RIP uses to regulate its performance:
- Route update timer Time between router updates. The default is 30 seconds.
- Route invalid timer Time that must expire before a route becomes invalid. The default is 180 seconds.
- Route hold-down timer If IP RIP receives an update with a hop count higher than the metric recorded in the routing table, the router goes into holddown for 180 seconds.
- Route flush timer Time from when a route becomes invalid to when it is removed from the routing table. The default is 240 seconds.
18.
How do you stop RIP updates from propagating out an interface on a router?
Sometimes you do not want RIP updates to propagate across the WAN, wasting valuable bandwidth or giving out valuable information about your internetwork. The easiest way to stop RIP updates from propagating out an interface is to use the passive-interface global configuration command.
19.
How do you display the contents of a Cisco IP routing table?
The show ip route command displays the Cisco routing table's contents.
20.
What is Interior Gateway Routing Protocol (IGRP)?
IGRP is a Cisco proprietary distance vector routing protocol. IGRP has a default hop count of 100 hops, with a maximum hop count of 255. IGRP uses bandwidth and line delay as its default metric, but it can also use reliability, load, and MTU.
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