Mastering Preferred Member Election in SD-WAN with Outbandwidth Metric
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Questions and Answers

Which member is considered the highest priority member in the first output?

  • T_INET_2
  • T_MPLS
  • T_INET_1
  • T_INET_0 (correct)

What is the metric used in the best quality rule?

  • Outbandwidth (correct)
  • Inbandwidth
  • Moving up and down the list
  • Link-cost-threshold

What is the corrected available bandwidth difference (CBWD) in the first output?

  • 999.9 kbps (correct)
  • 899 kbps
  • ABWD
  • None of the above

Why is T_INET_1 placed below T_INET_0 in the first output?

<p>Because ABWD is equal to or lower than the CBWD (B)</p> Signup and view all the answers

What is the preferred member in the second output?

<p>T_INET_1 (C)</p> Signup and view all the answers

Why does T_MPLS get placed below T_INET_1 in the first output?

<p>Because T_MPLS has less available bandwidth (A)</p> Signup and view all the answers

What is the purpose of the diagnose sys sdwan service command?

<p>To display the output of the preferred member election (B)</p> Signup and view all the answers

What is the relationship between ABWD and CBWD in determining the better member?

<p>ABWD must be equal to or lower than CBWD (B)</p> Signup and view all the answers

What is the configuration shown in the examples?

<p>T_INET_0 as the highest priority member (C)</p> Signup and view all the answers

What is the metric used in the second example?

<p>Outbandwidth (C)</p> Signup and view all the answers

Which member is considered better if its packet loss is equal to or lower than the CPL?

<p>T_INET_1 (A)</p> Signup and view all the answers

In the third output, why is T_MPLS still placed on top of T_INET_1 even though its CPL is no longer lower?

<p>FortiGate doesn't consider the CPL when moving a lower priority member back down the interface list. (D)</p> Signup and view all the answers

What factor is considered for preferred member in terms of SLA targets?

<p>The more SLA targets a member meets, the higher its preference. (A)</p> Signup and view all the answers

What is the basis for member priority?

<p>Interface Preference configuration (A)</p> Signup and view all the answers

Which member is moved back below T_INET_1 in the fourth output?

<p>T_MPLS (B)</p> Signup and view all the answers

What does FortiGate prefer when moving a lower priority member back down the interface list?

<p>The member with the lowest packet loss (C)</p> Signup and view all the answers

What is the factor retrieved from member configuration for member cost consideration?

<p>Member cost (A)</p> Signup and view all the answers

What happens to T_MPLS in the second output?

<p>It is placed on top of T_INET_1 (B)</p> Signup and view all the answers

What is the basis for T_MPLS being placed on top of T_INET_1 in the second output?

<p>Its CPL is lower than T_INET_1 (D)</p> Signup and view all the answers

What does FortiGate consider when determining the preferred member?

<p>SLA targets, member cost, and member priority (D)</p> Signup and view all the answers

Why is T_INET_1 considered the better member in the first output?

<p>T_INET_1 has a higher corrected available bandwidth than T_MPLS (D)</p> Signup and view all the answers

What determines the advantage of a higher priority member over a lower priority member in the oif list?

<p>Link-cost-threshold value (B)</p> Signup and view all the answers

When is a lower priority member placed on top of a higher priority member in the oif list?

<p>When the corrected packet loss (CPL) is equal to or higher than the packet loss of the higher priority member (B)</p> Signup and view all the answers

What does FortiGate consider when moving a lower priority member back down the interface list?

<p>Highest available bandwidth (B)</p> Signup and view all the answers

What does the corrected packet loss (CPL) formula add to the packet loss?

<p>Link-cost-threshold value (A)</p> Signup and view all the answers

When does FortiGate select the member with the lowest packet loss percentage as the preferred member?

<p>When the corrected packet loss (CPL) is lower than the packet loss of the highest priority member (B)</p> Signup and view all the answers

What are the rules followed by FortiGate when building the oif list using bandwidth as the metric?

<p>Higher priority member has an advantage over a lower priority member (B)</p> Signup and view all the answers

When is a lower priority member placed below a higher priority member in the oif list?

<p>When the corrected available bandwidth (ABWD) is equal to or lower than the available bandwidth of the higher priority member (B)</p> Signup and view all the answers

What is the configuration setting that determines the advantage of a higher priority member over a lower priority member in the oif list?

<p>Link-cost-threshold value (B)</p> Signup and view all the answers

What does FortiGate consider when determining the preferred member in a best quality rule that uses packet loss as the metric?

<p>Corrected packet loss (CPL) (D)</p> Signup and view all the answers

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