How to Configure VPC in Nexus
Configuring Virtual Port Channels (VPC) in Nexus switches is a crucial step in building a resilient and high-performance data center network. VPC allows you to create a link aggregation group that spans multiple Nexus switches, providing redundancy, load balancing, and increased bandwidth.
In this article, we will walk you through the steps to configure VPC in Nexus switches, including Nexus 9000, Nexus 7000, and Nexus 5000 series.
Prerequisites
Before you begin the configuration process, make sure you have the following prerequisites:
- Access to the Nexus switches through SSH or console
- Knowledge of basic networking concepts
- Understanding of Nexus OS commands
- Physical connectivity between Nexus switches
Steps to Configure VPC in Nexus
Step 1: Enable Feature Set
First, you need to enable the VPC feature set on both Nexus switches by entering the following command in global configuration mode:
feature vpc
Step 2: Configure Domain IDs
Assign a unique domain ID to each Nexus switch. This ID should be the same on both switches to form a VPC domain. Use the following command to set the domain ID:
vpc domain 10
Step 3: Configure Peer Link
Next, configure the peer link that connects the two Nexus switches. Use a dedicated interface for the peer link and set the speed to match the physical connection speed. Use the following commands to configure the peer link:
interface ethernet 1/1 switchport mode trunk speed 40
Step 4: Configure VPC Peer Keepalive Link
For added redundancy, configure a VPC peer keepalive link between the Nexus switches. This link is used to exchange heartbeats and detect peer link failures. Use the following commands to configure the keepalive link:
interface ethernet 1/2 ip address 192.168.1.1/24
Step 5: Configure VPC Member Ports
Finally, configure the member ports that will be part of the VPC domain. These ports should be connected to end devices or downstream switches. Use the following commands to configure the member ports:
interface ethernet 1/3 switchport channel-group 10 mode active
Repeat the above steps on the second Nexus switch to complete the VPC configuration. Once done, verify the VPC status and connectivity using the following command:
show vpc brief
Conclusion
Configuring VPC in Nexus switches is essential for creating a highly available and scalable network infrastructure. By following the steps outlined in this article, you can successfully set up VPC and leverage its benefits for your data center network.
For more advanced configurations and troubleshooting tips, refer to the official Nexus documentation or consult with a networking professional.
Thank you for reading!