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Datalinks, VLANs and aggregation

Understand physical links, virtual NICs and VLAN mapping

Scope: Oracle Solaris 11.4 and, for LDoms, compatible SPARC hardware with Oracle VM Server for SPARC. Examples are educational: verify release, privileges, target names and backups before running changes.

How it works

Physical and virtual

Solaris represents physical NICs, VLAN links, aggregations and VNICs as datalink objects.

VLANs

A VLAN link needs matching switch-side configuration.

Aggregation

Link aggregation requires compatible switch and host configurations; validate the chosen mode.

Worked examples

Each example explains the question it answers, a reproducible starting point, what to look for, and operational precautions.

1. List links

Use this as a starting point for list links.

dladm show-link

Interpretation: Check command output against the expected host configuration; record the before/after state.

Operational note: Run commands in a test environment first; confirm device names, privileges and release-specific options.

2. List physical NICs

Use this as a starting point for list physical nics.

dladm show-phys

Interpretation: Check command output against the expected host configuration; record the before/after state.

Operational note: Run commands in a test environment first; confirm device names, privileges and release-specific options.

3. Create VLAN

Use this as a starting point for create vlan.

dladm create-vlan -l net0 -v 120 vlan120

Interpretation: Check command output against the expected host configuration; record the before/after state.

Operational note: Run commands in a test environment first; confirm device names, privileges and release-specific options.

4. Inspect VLANs

Use this as a starting point for inspect vlans.

dladm show-vlan

Interpretation: Check command output against the expected host configuration; record the before/after state.

Operational note: Run commands in a test environment first; confirm device names, privileges and release-specific options.

5. Inspect aggregations

Use this as a starting point for inspect aggregations.

dladm show-aggr

Interpretation: Check command output against the expected host configuration; record the before/after state.

Operational note: Run commands in a test environment first; confirm device names, privileges and release-specific options.

Primary documentation

Read the relevant Oracle documentation for exact version-specific flags, supported platforms and limitations: Oracle primary reference ↗.

This field manual is independent, not affiliated with or endorsed by Oracle. Command examples should be adapted to your environment.