In Cisco UCS, there are several interfaces involved on the packet path from the vNIC through the adapter, IOM to finally reach Pi Which is the order of those interfaces, starting from the vNIC?

Question

Options

• AVIF, UIF, HIF, SIR NIF
• BVIF, UIF, HIF, NIF SIF
• CHIF. NIF, UIF, VIF SIF
• DHIF. SIF, VIF, UIF NIF

• A
  89% (25)
• B
  7% (2)
• C
  4% (1)

Explanation

Option A (VIF → UIF → HIF → SIF → NIF) correctly traces the packet path as it moves outward: the VIF (Virtual Interface) is created on the adapter for each vNIC, traffic then crosses the UIF (Uplink Interface) from the adapter toward the IOM, enters the IOM via the HIF (Host Interface) on the server-facing side, passes through the SIF (Switch Interface) internally within the IOM, and finally exits through the NIF (Network Interface) toward the Fabric Interconnect.

Option B is wrong because it swaps the final two interfaces (NIF before SIF), which reverses the internal IOM traversal order. Options C and D are both wrong because they start with HIF, which is an IOM-side interface - traffic must first pass through the adapter-level VIF and UIF before ever reaching the IOM.

Memory tip: Think "Very Unusual Hardware Serves Networks" → VIF, UIF, HIF, SIF, NIF - moving from the virtual/software layer outward through the adapter, into the IOM, and onto the network.

No community discussion yet for this question.