---
title: "SMC Gen5 Genoa Port Diagrams - InfiniBand"
slug: "smc-gen5-genoa-port-diagrams-infiniband"
description: "SMC Gen5 Genoa Port Diagrams - InfiniBand"
updated: 2026-10-26T23:15:21Z
published: 2026-10-26T23:15:21Z
canonical: "docs.vastdata.com/smc-gen5-genoa-port-diagrams-infiniband"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vastdata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# SMC Gen5 Genoa Port Diagrams - InfiniBand

> [!WARNING]
> ⚠️ Warning
> 
> Networking is configured on a per-CNode basis, it is possible for a cluster to have CNodes with differing configurations. If you are unsure of the configuration of a particular CNode, please contact VAST Support for assistance.

## SMC Gen5 Genoa CBox with single CX7 NIC in InfiniBand Mode

![SMC Gen5 Genoa CBox with single CX7 NIC in InfiniBand Mode](https://cdn.us.document360.io/89b91113-5dc6-49db-86ec-57b16dc8ce56/Images/Documentation/da1216a6-5dba-44d2-9295-c3c342526c0a.png?sv=2026-02-06&spr=https&st=2026-11-08T09%3A18%3A46Z&se=2026-11-08T10%3A18%3A46Z&sr=c&sp=r&sig=2crpurG7pHCacJq8dallQt814K0gh3%2F6W5MRxlGHT2A%3D)

| **SMC Gen5 Genoa CBox** |
| --- |
| Number | Name | Port Location | Function | PCIe B:D.F |
| 1 | PSU 1 |  |  |  |
| 2 | PSU 2 |  |  |  |
| 3 | ib1 | Right Card – Left Port | Unified | 81:00.1 |
| 4 | ib0 | Right Card – Right Port | Unified | 81:00.0 |
| 5 | enp65s0f0 | 1 GbE Port 1 (Left) | MGMT/IPMI |  |
| 6 | enp65s0f1 | 1 GbE Port 2 | (*MGMT) |  |
| 7 | enp65s0f3 | 1 GbE Port 4 (Right) | TECH |  |
| 8 | BMC | Dedicated BMC port | (*IPMI) |  |

*In B2B IPMI configuration, the MGMT port is moved to 1GbE port 2 (enp65s0f1) and Port 1 (enp65s0f0) connected to the Dedicated BMC Port of the Peer Node

---

## SMC Gen5 Genoa CBox with Dual CX7 NIC in InfiniBand + InfiniBand mode

![SMC Gen5 Genoa CBox with Dual CX7 NIC in InfiniBand + InfiniBand mode](https://cdn.us.document360.io/89b91113-5dc6-49db-86ec-57b16dc8ce56/Images/Documentation/bc3ffef8-2649-4145-83f3-ba0aea1a0daf.png?sv=2026-02-06&spr=https&st=2026-11-08T09%3A18%3A46Z&se=2026-11-08T10%3A18%3A46Z&sr=c&sp=r&sig=2crpurG7pHCacJq8dallQt814K0gh3%2F6W5MRxlGHT2A%3D)

| **SMC Gen5 Genoa CBox** |
| --- |
| Number | Name | Port Location | Function | PCIe B:D.F |
| 1 | PSU 1 |  |  |  |
| 2 | PSU 2 |  |  |  |
| 3 | ib1 | Right Card – Left Port | Internal | 81:00.1 |
| 4 | ib0 | Right Card – Right Port | Internal | 81:00.0 |
| 5 | ib3 | Left Card – Left Port | Northbound/Split |  |
| 6 | ib2 | Left Card – Right Port | Northbound/Split |  |
| 7 | BMC | Dedicated BMC port | (*IPMI) |  |
| 8 | enp65s0f0 | 1 GbE Port 1 (Left) | MGMT/IPMI |  |
| 9 | enp65s0f1 | 1 GbE Port 2 | (*MGMT) |  |
| 10 | enp65s0f3 | 1 GbE Port 4 (Right) | TECH |  |

*In B2B IPMI configuration, the MGMT port is moved to 1GbE port 2 (enp65s0f1) and Port 1 (enp65s0f0) connected to the Dedicated BMC Port of the Peer Node

---

## SMC Gen5 Genoa CBox with dual CX7 NIC in InfiniBand Mode with “Skip NIC - External” enabled

> [!WARNING]
> ⚠️ Warning
> 
> Since this is a per-CNode setting, it is possible for a cluster to have CNodes with differing configurations. If you are unsure of the configuration of a CNode, please contact VAST Support for assistance.

When this flag is used, VAST instructs the auto-ports feature to disable the NIC that is typically designated for **northbound** traffic. This means that if you use this flag on a node with two NICs, the NIC designated for **internal** traffic will handle **both internal and external** (aka Unified) network traffic. This means the network interfaces that would typically be solely used for **northbound** connections are effectively disabled. This flag is not valid on a single NIC CNode.

![SMC Gen5 Genoa CBox with dual CX7 NIC in InfiniBand Mode](https://cdn.us.document360.io/89b91113-5dc6-49db-86ec-57b16dc8ce56/Images/Documentation/3281ed89-dc62-46c6-868c-8e5e6699c455.png?sv=2026-02-06&spr=https&st=2026-11-08T09%3A18%3A46Z&se=2026-11-08T10%3A18%3A46Z&sr=c&sp=r&sig=2crpurG7pHCacJq8dallQt814K0gh3%2F6W5MRxlGHT2A%3D)

| **SMC Gen5 Genoa CBox** |
| --- |
| Number | Name | Port Location | Function | PCIe B:D.F |
| 1 | PSU 1 |  |  |  |
| 2 | PSU 2 |  |  |  |
| 3 | ib1 | Right Card – Left Port | Unified | 81:00.1 |
| 4 | ib0 | Right Card – Right Port | Unified | 81:00.0 |
| 5 | ib3 | Left Card – Left Port | Disabled | 01:00.1 |
| 6 | ib2 | Left Card – Right Port | Disabled | 01:00.0 |
| 7 | BMC | Dedicated BMC port | (*IPMI) |  |
| 8 | enp65s0f0 | 1 GbE Port 1 (Left) | MGMT/IPMI |  |
| 9 | enp65s0f1 | 1 GbE Port 2 | (*MGMT) |  |
| 10 | enp65s0f3 | 1 GbE Port 4 (Right) | TECH |  |

*In B2B IPMI configuration, the MGMT port is moved to 1GbE port 2 (enp65s0f1) and Port 1 (enp65s0f0) connected to the Dedicated BMC Port of the Peer Node

---

> [!NOTE]
> ℹ️ Note
> 
> The SMC Gen5 Genoa Platform does not support the Reverse NICs option.