Static etherchannel

As explained in Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

A static EtherChannel is an EtherChannel configuration that forms a logical link from specified ports without negotiating with the neighboring device.

A static EtherChannel combines specified switch ports into one logical link without negotiating with the neighboring device. Both sides must use the single static mode, on. section 16.2 section 16.2.2

Configure and evaluate it with these points:

• Assign member ports with channel-group group-number mode on; configure both ends in on mode. section 16.5 section 16.2.2
• Match member-port settings, including speed, duplex, access or trunk mode, allowed VLANs, native VLAN, and access VLAN. section 16.5
• Prefer PAgP or LACP when possible because static formation does not verify the neighbor and can create Layer 2 loops. section 16.2.2
• Use static EtherChannel when the connected device requires it, such as a wireless LAN controller. section 16.2.2

Figure 16.8 A static EtherChannel is formed between SW1 and SW2. Both switches’ ports are configured in on mode. switchport mode trunk is applied to each switch’s port channel interface to make the EtherChannel a trunk.

Use the topology figure to see both switches’ ports configured in on mode and the port channel made a trunk. section 16.2.2

How Acing the CCNA Exam: Volume 1 Fundamentals and Protocols covers it

How deep it goes

Explains on-mode formation, matching requirements, incompatible modes, and Layer 2 loop risk, but does not show full CLI output.

Examples

Uses a SW1-to-SW2 trunk topology and a wireless LAN controller connection as practical examples.

What it assumes

Assumes basic switch-port and VLAN knowledge while contrasting static formation with negotiated EtherChannel protocols.

What you can do after

Apply via Cisco CLI with channel-group group-number mode on and avoid incompatible or mismatched EtherChannel configurations.

How it connects

Connects static EtherChannel with EtherChannel, PAgP, LACP, trunking, VLANs, and Layer 2 loops.

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Related concepts

• dynamic etherchannelcontrasts with · A dynamic EtherChannel is an EtherChannel configuration in which neighboring switches negotiate with each other using a protocol to form the logical link.
• etherchannelkind of · EtherChannel is a link-aggregation technology that combines multiple physical Ethernet links into one logical connection.
• lacpalternative to · LACP is an IEEE protocol that negotiates, forms, and maintains aggregated links between compatible network devices.
• PAgPalternative to · PAgP is Cisco’s proprietary protocol for negotiating and managing Ethernet link aggregation between switch ports.
• wireless LAN controllerused by · A wireless LAN controller is a network platform that centrally manages wireless access points, their configuration, and their client connections.

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols. The section links point to the parts of the book it draws on.