Core Switch Setup Steps

Setting up a core switch involves initial access, basic configuration, VLAN and interface setup, routing, and security to ensure network connectivity and management. 1.

Access the Switch

Begin by connecting to the switch using one of the following methods: Console Cable: Direct connection via the console port using a terminal emulator like PuTTY or Tera Term.

SS

H: If the switch already has an IP address, log in remotely. Web Interface: Optional for modern switches with GUI management. 2.

Basic Configuration

Set Hostname: Identify the switch in the network (e.g., Core-Switch) using CLI commands. Set Enable Password: Protect privileged commands and enable SSH access.

Configure Management I

P: Assign an IP address, subnet mask, and default gateway for remote management. 3.

VLAN Setup

Create VLA

Ns: Define VLANs for different network segments, including interconnection VLANs for BRAS and firewall links. Assign Interfaces: Configure access ports for single VLANs and trunk ports for multiple VLANs.

Bind VLANI

F Interfaces: On Huawei switches, bind VLANIF interfaces to VPN instances to isolate traffic. 4.

Interface Configuration

Interconnect with BRAS and Firewalls: Assign IP addresses to interfaces connecting to upstream devices.

Bind Interfaces to VLA

Ns: Ensure proper segmentation and routing between VLANs. Enable Trunking: For uplinks carrying multiple VLANs, configure trunk ports with appropriate tagging. 5.

Routing ConfigurationOSPF Setup: Configure OSPF or other routing protocols to enable connectivity between user networks and egress networks. Route Isolation: Use VPN instances or route maps to separate public network routes from firewall return paths. 6.

Security and Management

Enable SS

H and SNMP: Secure remote access and monitoring. Set Access Control Lists (ACLs): Restrict unauthorized access to sensitive interfaces.

Apply Qo

S Policies: Optimize traffic flow and prioritize critical services. 7.

Verification

Check VLA

Ns: Use commands like show vlan brief to verify VLAN creation. Test Connectivity: Ping connected devices and verify routing tables. Monitor Logs: Ensure no errors or misconfigurations are present.

8.

Documentation and Backup

Save Configuration: Commit changes to the startup configuration. Document Setup: Record VLAN IDs, IP addresses, interface assignments, and routing details for future reference. Following these steps ensures that the core switch is secure, properly segmented, and fully integrated into the network infrastructure, providing reliable connectivity and management capabilities.