How do I configure a port channel on a Cisco router?
Perform these steps to configure the EtherChannel feature on Cisco 1900, 2900 and 3900 series ISRs. Enters global configuration mode. Specify the EtherChannel (port channel) logical interface, and enter interface configuration mode. Assign an IP address and subnet mask to the EtherChannel.
How do I set up EtherChannel?
The basic process for configuring your EtherChannel interfaces is as follows:
- Connect to the command-line interface (CLI) your switch.
- Access Privileged EXEC mode.
- Access Global Configuration mode.
- Access Interface Configuration mode.
- Change switchport to trunk or access, but all ports must be in the same VLAN.
What is Port Channel vs EtherChannel?
Port channel vs Etherchannel –
| PARAMETER | PORT CHANNEL | ETHERCHANNEL |
|---|---|---|
| Cisco’s way of distinguishing | Port-channel is the name of Cisco’s virtual interface for the purpose of Link aggregation | Etherchannel is a term used by Cisco to describe a link aggregation |
Can an EtherChannel be a trunk?
On a Layer 2 switch, EtherChannel is used to aggregate access ports or trunks. For example, if the physical ports of one side are configured as trunks, the physical ports of the other side must also be configured as trunks. Each EtherChannel has a logical port channel interface.
What is port channel configuration?
A port channel bundles individual interfaces into a group to provide increased bandwidth and redundancy. Port channeling also load balances traffic across these physical interfaces. Any configuration changes that you apply to the port channel are applied to each member interface of that port channel.
What are port channels?
A port channel is a communication link between two switches supported by matching channel group interfaces on each switch. A port channel is also referred to as a Link Aggregation Group (LAG). Port channels combine the bandwidth of multiple Ethernet ports into a single logical link.
How do I set EtherChannel load balancing?
EtherChannel can use two methods for load balancing Cisco device connections, with the default load balancing based on the source MAC address of the system sending data. But because it is sometimes more important for some data to be received rather than sent, Cisco gives you a choice.
What is the purpose of port channel?
How many ports can be in an EtherChannel?
eight
Each EtherChannel can consist of up to eight compatibly configured Ethernet ports. All ports in each EtherChannel must be configured as either Layer 2 or Layer 3 ports.
How many ways can you configure EtherChannel?
There are three options to configure an EtherChannel: PAgP: A Cisco proprietary protocol. LACP: An IEEE standard. Manual: Bundle multiple physical interfaces without any protocol.
When did the Cisco 3925 Integrated Services Router come out?
Cisco 3925 Integrated Services Router Series Cisco 3900 Series Integrated Services Ro Overview Product Overview Product Type Branch Routers Status End of Sale EOL Details Release Date 13-OCT-2009
How do you create a port channel in Cisco?
You can create port channels directly by creating th e port channel interface, or you can create a channel group that acts to aggregate individual ports into a bundle. When you associate an interface with a channel group, the software creates a matching port channel automatically if the port channel does not already exist.
What are the requirements for a port channel?
All the ports in a port channel must be compatible; they must use the same speed and duplex mode (see the “Compatibility Checks” section on page 5-2). When you run static port channels with no aggregation protocol, the physical links are all in the on channel mode.
When do ports form a LACP port channel?
a port channel based on criteria such as the port speed and the trunking state.The pa ssive mode is useful when you do not know whether the remote system, or partner, supports LACP. Ports can form an LACP port channel when they are in different LACP modes if the modes are