[giaiphapit.vn] Creating VLANS and establishing a dot1q trunk between Cisco and HP switches

Introduction

This tutorial guides you through the process of creating VLANs and establishing a dot1q trunk between Cisco and HP switches. Understanding VLANs (Virtual Local Area Networks) and trunking is essential for effective network segmentation and management. This step-by-step guide will help you configure your switches to enable communication between different VLANs, improving network performance and security.

Step 1: Access the Switches

• Connect to your Cisco and HP switches using a console cable or SSH.
• Use terminal emulation software (like PuTTY or Tera Term) to access the command line interface (CLI) of each switch.
• Ensure you have administrative privileges to make configuration changes.

Step 2: Configure VLANs on Cisco Switch

• Enter global configuration mode:

  enable
  configure terminal
  

• Create VLANs:

  vlan 10
  name Sales
  exit
  vlan 20
  name Marketing
  exit
  

• Verify the VLAN configuration:

  show vlan brief
  

Step 3: Configure VLANs on HP Switch

• Access the HP switch CLI.
• Create the same VLANs:

  vlan 10
  name "Sales"
  exit
  vlan 20
  name "Marketing"
  exit
  

• Confirm VLAN setup:

  show vlan
  

Step 4: Set Up Trunking on Cisco Switch

• Choose the interface that will connect to the HP switch:

  interface GigabitEthernet0/1
  

• Configure the interface as a trunk:

  switchport mode trunk
  switchport trunk encapsulation dot1q
  switchport trunk allowed vlan 10,20
  

• Exit the interface configuration:

  exit
  

• Save the configuration:

  write memory
  

Step 5: Set Up Trunking on HP Switch

• Select the interface connected to the Cisco switch:

  interface 1
  

• Enable trunking:

  trunk 1 trk1 trunk
  

• Allow VLANs on the trunk:

  vlan 10,20
  

• Confirm the configuration:

  show trunk
  

Step 6: Test Connectivity

• Connect devices to each VLAN on both switches.
• Use the ping command to test communication between devices across VLANs:

  ping <IP address of a device in another VLAN>
  

• If pings are successful, the configuration is correct.

Conclusion

You have successfully created VLANs and established a dot1q trunk between Cisco and HP switches. This configuration allows for efficient VLAN communication and traffic management. As a next step, consider implementing additional security features such as VLAN access control lists (ACLs) to further enhance your network's security. Regularly review your configuration and network performance to ensure optimal operation.