350-501 · Question #516
350-501 Question #516: Real Exam Question with Answer & Explanation
The correct answer is D: interface TenGigE0/0/0/0.2. To rewrite VLAN tags between R2 and R4 across the pseudowire, the configuration should: 1. Set the encapsulation to VLAN 10 (encapsulation dot1q 10) on the interface where traffic is received from R2. 2. Rewrite the ingress tag to VLAN 15 using the rewrite ingress tag push dot1q
Question
Refer to the exhibit. R1 and R3 have a pseudowire connection between them, which allows R2 and R4 to communicate via Layer 2. R2 uses VLAN 10. R4 also uses VLAN 10, but with a different subnet associated. Which configuration should the engineer apply to R3 to rewrite the VLAN on traffic from R2 to VLAN 15?
Options
- Ainterface TenGigE0/0/0/0.1 l2transport
- Binterface TenGigE0/0/0/0.2 l2transport
- Cinterface TenGigE0/0/0/0.1 l2transport
- Dinterface TenGigE0/0/0/0.2
Explanation
To rewrite VLAN tags between R2 and R4 across the pseudowire, the configuration should: 1. Set the encapsulation to VLAN 10 (encapsulation dot1q 10) on the interface where traffic is received from R2. 2. Rewrite the ingress tag to VLAN 15 using the rewrite ingress tag push dot1q 15 symmetric command. This pushes a new VLAN tag (15) while maintaining symmetric traffic flow for VLAN This ensures that traffic received on VLAN 10 from R2 is sent across the pseudowire with VLAN 15, satisfying the requirement to rewrite the VLAN for traffic from R2 to R4.
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