Mastering Network Traffic Optimization

Which formula is used to calculate the corrected metric (CM) in FortiGate?

CM = real metric / (1 + Link-cost-threshold)

CM = real metric / (1 + Link-cost-threshold/100) (correct)

CM = real metric / (1 - Link-cost-threshold)

CM = real metric / (1 - Link-cost-threshold/100)

When does an LPM (lower priority member) get placed on top of an HPM (higher priority member)?

When its metric is equal to the CM of the HPM

When its metric is worse than the CM of the HPM

When its metric is equal to or worse than the CM of the highest priority member

When its metric is better than the CM of the HPM (correct)

When is an LPM (lower priority member) placed below an HPM (higher priority member)?

When the LPM metric is equal to or worse than the HPM

When the LPM metric is equal to or worse than the CM of the highest priority member (correct)

When the LPM metric is better than the HPM

When the LPM metric is better than the CM of the highest priority member

What is the advantage given to higher priority members in FortiGate?

The advantage depends on the link-cost-threshold value Signup and view all the answers

Which member does FortiGate select as the preferred member when using latency, jitter, or custom-profile-1 as the metric?

The member with the lowest metric Signup and view all the answers

What does the oif list in FortiGate depend on?

The member performance Signup and view all the answers

What is the purpose of the Interface Preference configuration list in FortiGate?

To define the order of interfaces in the configuration Signup and view all the answers

What happens if the link-cost-threshold is set to a value higher than zero in FortiGate?

FortiGate calculates the corrected metric (CM) for higher priority members Signup and view all the answers

Which metric does FortiGate use to determine the preferred member when best quality is configured as the strategy?

The metric in use Signup and view all the answers

What is the formula used by FortiGate to calculate the corrected metric (CM)?

CM = real metric / (1 + Link-cost-threshold/100) Signup and view all the answers

Which metric is used in the best quality member election rule described in the text?

Latency Signup and view all the answers

In the first output shown in Example 1, why is T_INET_0 selected as the preferred member even though T_INET_1 has the lowest real latency?

T_INET_0 has a lower corrected latency than T_INET_1. Signup and view all the answers

In the second output shown in Example 1, why does T_INET_1 become the preferred member?

T_INET_1 has a lower corrected latency than T_INET_0. Signup and view all the answers

In the third output shown in Example 1, why is T_INET_1 moved back below T_INET_0?

T_INET_1 has a higher corrected latency than T_INET_0. Signup and view all the answers

In the first output shown in Example 2, why is T_MPLS placed below T_INET_1 even though T_MPLS has lower latency?

T_INET_1 has a lower corrected latency than T_MPLS. Signup and view all the answers

In the second output shown in Example 2, why is T_MPLS placed on top of T_INET_1?

T_MPLS has a lower corrected latency than T_INET_1. Signup and view all the answers

In the third output shown in Example 2, why is T_MPLS still placed on top of T_INET_1 even though its latency is no longer lower than the corrected latency of T_INET_1?

FortiGate doesn’t consider the advantage when moving a lower priority member back down the interface list. Signup and view all the answers

In the fourth output shown in Example 2, why is T_MPLS moved back below T_INET_1?

T_MPLS has a higher corrected latency than T_INET_1. Signup and view all the answers

Which metric is used in the custom-profile-1 formula to calculate the link quality index?