---
title: "Dell IL Port Diagrams - InfiniBand"
slug: "dell-il-port-diagrams-infiniband"
description: "Dell IL Port Diagrams - InfiniBand"
updated: 2026-10-26T23:15:21Z
published: 2026-10-26T23:15:21Z
canonical: "docs.vastdata.com/dell-il-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.

# Dell IL Port Diagrams - InfiniBand

> [!NOTE]
> ℹ️ Info
> 
> The Green Port - the leftmost RJ45 on the Dell IceLake CNode (The Green Port) is “reserved” and is not used in a VAST Deployment.

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

## Dell IceLake CBox with Single CX6 NIC in InfiniBand Mode

![Dell IceLake CBox with Single CX6 NIC in InfiniBand Mode](https://cdn.us.document360.io/89b91113-5dc6-49db-86ec-57b16dc8ce56/Images/Documentation/df594490-bfe2-4d65-9930-bf8b92245aee.png?sv=2026-02-06&spr=https&st=2026-11-08T09%3A42%3A24Z&se=2026-11-08T10%3A42%3A24Z&sr=c&sp=r&sig=WpF%2F2uk2RBgR%2BLSlgFL3qMmKdN188%2F9nSdqKYVS%2B1Co%3D)

| **Dell IceLake CBox** |
| --- |
| Number | Name | Port Location | Function | PCIe B:D.F |
| 1 | CNode 1 |  |  |  |
| 2 | CNode 2 |  |  |  |
| 3 | CNode 3 |  |  |  |
| 4 | CNode 4 |  |  |  |
| 5 | PSU 1 |  |  |  |
| 6 | PSU 2 |  |  |  |
| 7 | ib1 | Right Card – Left Port | Unified | 31:00.1 |
| 8 | ib0 | Right Card – Right Port | Unified | 31:00.0 |
| 9 | em2 | 1 GbE Port 1 (Left) | MGMT/IPMI |  |
| 10 | em3 | 1 GbE Port 2 | (*MGMT) |  |
| 11 | em5 | 1 GbE Port 4 (Right) | TECH |  |

*in B2B IPMI configuration the MGMT port is moved to 1GbE port 2 (eno2) and the TECH port is moved to 1GbE port 1 (em3).

---

## Dell IceLake CBox with Dual CX6 NIC in IB + IB mode

![Dell IceLake CBox with Dual CX6 NIC in IB + IB mode](https://cdn.us.document360.io/89b91113-5dc6-49db-86ec-57b16dc8ce56/Images/Documentation/8e56729c-92c3-43c2-a940-93d1e0da1111.png?sv=2026-02-06&spr=https&st=2026-11-08T09%3A42%3A24Z&se=2026-11-08T10%3A42%3A24Z&sr=c&sp=r&sig=WpF%2F2uk2RBgR%2BLSlgFL3qMmKdN188%2F9nSdqKYVS%2B1Co%3D)

| **Dell IceLake CBox** |
| --- |
| Number | Name | Port Location | Function | PCIe B:D.F |
| 1 | CNode 1 |  |  |  |
| 2 | CNode 2 |  |  |  |
| 3 | CNode 3 |  |  |  |
| 4 | CNode 4 |  |  |  |
| 5 | PSU 1 |  |  |  |
| 6 | PSU 2 |  |  |  |
| 7 | ib3 | Right Card – Left Port | Internal | 31:00.1 |
| 8 | ib2 | Right Card – Right Port | Internal | 31:00.0 |
| 9 | ib1 | Left Card – Left Port | Northbound / Split | 17:00.1 |
| 10 | ib0 | Left Card – Right Port | Northbound / Split | 17:00.0 |
| 11 | em2 | 1 GbE Port 1 (Left) | MGMT/IPMI |  |
| 12 | em3 | 1 GbE Port 2 | (*MGMT) |  |
| 13 | em5 | 1 GbE Port 4 (Right) | TECH |  |

*in B2B IPMI configuration the MGMT port is moved to 1GbE port 2 (eno2) and the TECH port is moved to 1GbE port 1 (em3).

---

## Dell IceLake CBox with Dual CX6 NIC in IB mode with “Skip NIC - External” enabled

> [!NOTE]
> ℹ️ Info
> 
> The “Skip NIC - External” flag is a setting that can be set either in the VAST GUI Installer or via the command line `configure_network.py` tool. This flag is set on a per-CNode basis.

> [!WARNING]
> ⚠️ Warning
> 
> Since this is a per-CNode setting, it is possible for a chassis 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.

![Dell IceLake CBox with Dual CX6 NIC in IB mode](https://cdn.us.document360.io/89b91113-5dc6-49db-86ec-57b16dc8ce56/Images/Documentation/9c7825c5-19f0-4259-9a7c-2bb47d2d63b0.png?sv=2026-02-06&spr=https&st=2026-11-08T09%3A42%3A24Z&se=2026-11-08T10%3A42%3A24Z&sr=c&sp=r&sig=WpF%2F2uk2RBgR%2BLSlgFL3qMmKdN188%2F9nSdqKYVS%2B1Co%3D)

| **Dell IceLake CBox** |
| --- |
| Number | Name | Port Location | Function | PCIe B:D.F |
| 1 | CNode 1 |  |  |  |
| 2 | CNode 2 |  |  |  |
| 3 | CNode 3 |  |  |  |
| 4 | CNode 4 |  |  |  |
| 5 | PSU 1 |  |  |  |
| 6 | PSU 2 |  |  |  |
| 7 | ib3 | Right Card – Left Port | Unified | 31:00.1 |
| 8 | ib2 | Right Card – Right Port | Unified | 31:00.0 |
| 9 | ib1 | Left Card – Left Port | Disabled | 17:00.1 |
| 10 | ib0 | Left Card – Right Port | Disabled | 17:00.0 |
| 11 | em2 | 1 GbE Port 1 (Left) | MGMT/IPMI |  |
| 12 | em3 | 1 GbE Port 2 | (*MGMT) |  |
| 13 | em5 | 1 GbE Port 4 (Right) | TECH |  |

*in B2B IPMI configuration the MGMT port is moved to 1GbE port 2 (eno2) and the TECH port is moved to 1GbE port 1 (em3).

---

> [!NOTE]
> ℹ️ Note
> 
> The Dell IceLake Platform supports the Skip NIC - Internal option, but it has limited use cases and is not documented here.

> [!NOTE]
> ℹ️ Note
> 
> The Dell IceLake Platform supports the Reverse NICs option, but it has limited use cases and is not documented here.