CP Route v1 Vocabulary Ch03

Question 1

advertised distance

Answer 1

another name for EIGRP reported distance

Question 2

bandwidth

Answer 2

one of the default metrics for EIGRP path selection

Question 3

delay

Answer 3

one of the default metrics for EIGRP path selection; command uses tens-of-microseconds as the unit

Question 4

DUAL

Answer 4

Diffused Update Algorithm; convergence algorithm used in EIGRP that provides loop-free operation at every instant throughout a route computation; allows routers invovled in a topology change to synchronize at the same time, while not invovling routers unaffected by the change

Question 5

EIGRP stub router

Answer 5

a router running EIGRP that limits itself ins everal different ways for the purposes of limiting the EIGRP DUAL algorithm and reducing EIGRP Query Scope

Question 6

feasibility condition

Answer 6

with EIGRP, the case in which the reported distances is lower than the feasible distance

Question 7

feasible distance

Answer 7

with EIGRP, the metric value for the lowest-metric route to a particular subnet

Question 8

feasible successor

Answer 8

with EIGRP, a route that is not a successor route, but that meets the feasibility condition and can be used immediately when the successor route fails without causing loops

Question 9

full update

Answer 9

a routing protocol feature by which the routing update includes the entire set of routes, even if some or all are unchanged

Question 10

going active

Answer 10

EIGRP jargon meaning that EIGRP has placed a route in the active state

Question 11

offset-list

Answer 11

a configuration tool for RIP and EIGRP for which the list matches routes in routing updates and adds a defined value to the sent or received metric for the routes

Question 12

partial update

Answer 12

a routing protocol feature by which the routing update includes only routes that have changed, rather than the entire set

Question 13

Query Scope

Answer 13

the characterization of how far EIGRP Query messages flow away from the router that first notices a failed route and goes active for a particular subnet

Question 14

reported distance

Answer 14

from 1 EIGRP router’s perspective, the metric for a subnet calculated on a neighboring router and reported in a routing update to the first router

Question 15

Split Horizon

Answer 15

instead of advertising all routes out a particular interface, the routing protocol omits the routes whose outgoing interface field matches the interface out which the update would be sent

Question 16

successor

Answer 16

in EIGRP, the route to reach a subnet that has the best metric and should be placed in the IP routing table

Question 17

unequal-cost load balancing

Answer 17

a feature of EIGRP in which EIGRP includes multiple routes for the same prefix in the IP routing table but with IPS forwarding packets proportionally based on the calculated integer metric for each route

Question 18

variance

Answer 18

an integer setting for EIGRP to unequal-cost load balancing