Mastering the Network CLI: Cisco, HPE, Aruba & H3C
Introduction to the Command Line Interface
The Command Line Interface (CLI) remains the industry standard for configuring enterprise network infrastructure. While GUIs exist, the CLI offers speed, precision, and access to advanced features not exposed in web interfaces.
Core Concept: Modes
Most CLIs use a hierarchical mode structure. You strictly move from User Mode (monitoring) to Privileged Mode (advanced commands) to Global Configuration Mode (making changes).
Cisco IOS (The Standard)
Cisco's IOS set the standard for network CLIs. Being proficient here allows you to adapt to almost any other vendor.
Essential Commands
| Action | Command | Context |
|---|---|---|
| Enter Privileged Mode | enable | User Exec (>) |
| Enter Config Mode | configure terminal | Priv Exec (#) |
| View Configuration | show running-config | Priv Exec (#) |
| Save Changes | copy run start | Priv Exec (#) |
HPE ProCurve / ArubaOS-Switch
Legacy HPE switches (ProCurve) and modern Aruba campus switches (2930, 5400R) use a CLI very similar to Cisco, but with some "friendly" quirks.
Key Differences
- VLAN Context: In Cisco, you assign an IP to an SVI (interface vlan). In ArubaOS, you enter the VLAN context directly (
vlan 10) then add the IP. - Tagging: You strictly "tag" or "untag" ports within the VLAN context. No "switchport mode access".
ArubaCX (The Modern Era)
Aruba's new operating system for the CX series (6000, 8000) is Linux-based and returns to a more Cisco-like Interface-centric model.
Modern Features
- • Checkpoint & Rollback built-in
- • REST API accessible
- • Python scripting on-box
HPE Comware / H3C
Used in HPE FlexFabric (5900, 12900) and H3C devices. This CLI is distinct and verbose.
Translation Guide
| Standard Term | Comware Command |
|---|---|
| configure terminal | system-view |
| show run | display current-configuration |
| show ip interface brief | display ip interface brief |
| Trunk Port | port link-type trunk |
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