SPRI-ISIS Flashcards
IS-IS originally only had a metric range from 1 to 63
verdadeiro
ISIS Route Selection is based on the following process:
L2 over L1 - select Level 2 routes over Level 1 routes.
Internal over External - if levels are equal, select internal
Falso
verdadeiro
ISIS Route Selection is based on the following process:
Lowest Metric - if types are the same select route with lowest metric.
Load Share - if metric is the same for multiple routes, load-share.
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The following are some of the suggested IS-IS path selection design approaches:
Use wide metric on all routers in the autonomous system.
Change the default metric (10) to a lower value to prevent new unconfigured high interfaces from attracting traffic.
Verdadeiro
Falso:
Change the default metric (10) to a high value to prevent new unconfigured slow interfaces from attracting traffic.
The following are some of the suggested IS-IS path selection design approaches:
Design a metric plan as there is no automatic metric calculation in IS-IS.
You can borrow the OSPF formula to linearly map the link speeds to IS-IS metric.
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A redistribuição no ISIS em um router L1/L2 pode ser feita para os database L1 e L2 distintamente
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A sumarização no ISIS em um router L1/L2 não pode ser feita para os database L1 e L2 distintamente
Falso, sim pode
Comando usado para sumarização no isis IOS
__________ 10.1.0.0 255.255.255.0 level-1
summary-address
Comando usado para sumarização no isis IOS-XR
__________ 10.1.0.0 255.255.255.0 level-1
summary-prefix
A metrica da rota sumarizada será a menor métrica entre os prefixos sumarizados
verdadeiros
The drawback of summary addresses is that other routes might have less information to calculate the most optimal routing table for all individual destinations.
true
Qual timer default para convergência
30secs
Qual comando desativa o isis a nível de protocolo
protocol shutdown
IOS usa multi topology por default
falso
IOS XR usa multi topology pode default
verdadeiro
