4A0-104 practice question 20 of 35

Which one of the following items CANNOT be used as a mirror source on an Nokia 7750 SR?

Full set: 288 questions

Answer options

A: IP filter

B: MAC filter

C: Egress label Correct answer

D: Ingress label

Correct Answer:

C. Egress label

Explanation

Under configure mirror source, valid entities are port, sap, ip-filter, mac-filter, lag, ingress-lbl, and sdp; “egress-label” is not recognised, so it cannot be chosen as a source.

Why Incorrect

A. ip-filter is an accepted source keyword.
B. mac-filter is supported for mirroring.
D. ingress-lbl is an explicit option under source.

References

1. Nokia SR OS System Management Guide 20.10, sec 6.2 “Configuring Mirroring”, pp. 451-456.

2. Nokia SR OS CLI Reference Guide 20.10, cmd tree “configure mirror source”, p. 1411.

3. P. Wheeler, “Hardware-Assisted Packet Mirroring”, IEEE/IFIP NOMS 2020, DOI:10.23919/NOMS47738.2020.9110357.

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