Routing Protocols Flashcards
What does OSPF use as it’s routing metric
Cost
What is OSPF cost based on?
Bandwidth
Which routing protocol support load balancing over equal cost and unequal cost paths?
EIGRP
What command can you use to manually configure OSPF cost of a path to an interface?
ip ospf cost [path cost value]
What is used to determine whether EIGRP feasible successors can be used for unequal cost load balancing?
Variance
Which routing protocol process ID is locally significant to the router and can be any positive integer from 1 through 65535
OSPF
What command do you use to specify OSPF process id ?
router ospf {process id value]
What two timer have to match for two routers to forma an adjacency?
Hello and Dead timers
what is the command to manually configure the OSPF Hello timer?
ip ospf hello-interval [seconds]
What is the command to manually configure the OSPF Dead timer?
ip ospf dead-interval [seconds]
What is the default maximum number of equal cost OSPF paths?
4
What command can you use to override the default number of equal cost OSPF paths to insert into a routing table?
maximum-paths [maximum value] in OSPF router configuration mode
What command is used to specify which interfaces will participate in OSPF and which networks should be advertised?
network command
Will routers with different OSPF process IDs establish an adjaceny?
Yes. The OSPF process ID is locally significant to the router.
What command is used to specify the OSPF process id?
router ospf [process id]
What has to match for two OSPF router to form an adjacency?
Ospf area, Hello timers, and Dead timers
In OSPF, What is used to specify the amount of time to wait for hello packets before declaring a neighbor to be down?
Dead timer which is 4 times the hello timer value
What is the default value for a Hello timer on a point to point link?
10 seconds
What is the default value for a Hello timer on a nonbroadcast multiaccess (NBMA) link?
30 seconds
What command is used to view the routing table?
show ip route
When will EIGRP not load balance to a route?
Variance is equal to 1 or a route is not considered a successor or feasible successor
In EIGRP, what is the best route to a network?
Successor
In EIGRP, what is a backup route that can be used if the successor route goes down?
Feasible successor
What is the default value of a FastEthernet interface?
10
Where are eigrp feasible successor listed?
eigrp topology table
what is the command to display the eigrp topology table?
show ip eigrp topology
In EIGRP, what are K values sue for ?
to calculate the metric
In EIGRP, where are successor routes listed?
routing table
What ip address are EIGRP query packets sent to?
multicast address 224.0.0.10
If no feasible successors exist, how is a route re-computation initiated?
by sending out multicast query packets
