Exam 300-610 topic 1 question 225 discussion

Actual exam question from Cisco's 300-610

Question #: 225
Topic #: 1

A network engineer designs a virtual network in a Cisco UCS Manager. The traffic must be explicitly forwarded from the vNIC on the server to a specific uplink Ethernet port on the Cisco fabric interconnect. Also, the server vNIC must use the same uplink Ethernet port after reboot. Finally, the design requires a QoS policy for remote direct memory access over converged Ethernet (RoCE v2). Which set of design features meets these requirements?

A. vNIC pool and Silver priority
B. vNIC template and Gold priority
C. server VLAN pool and Gold priority
D. LAN pin group and Platinum priority

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Suggested Answer: D 🗳️

by chad0128 at May 21, 2025, 4:06 a.m.

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chad0128

1 week, 1 day ago

Selected Answer: D

Use LAN pin groups in a vNIC policy to explicitly forward traffic from a server vNIC to a specific uplink Ethernet port, ensuring the same port is used after a server reboot. A QoS policy for remote direct memory access over converged Ethernet (RoCE v2) must also be configured. This configuration requires vNIC pinning and a dedicated QoS profile. Explanation: 1. LAN Pin Groups: Cisco UCS uses LAN pin groups to map vNICs to specific uplink ports. By assigning a pin group, you dictate which uplink port the traffic from that vNIC will use. 2. vNIC Policies: vNIC policies are assigned to servers and include the chosen LAN pin group. This ensures that the specific uplink port mapping is applied. 3. Server Reboots: If a server reboots, it will use the vNIC policy and the associated LAN pin group to continue using the same uplink port. 4. QoS for RoCE v2: To optimize RoCE v2 traffic, you need a QoS policy that prioritizes its bandwidth and reduces latency. This policy will be applied in addition to the LAN pin group configuration.

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