Configure IP address for core switch

Access the Switch CLI Connect to the switch using a console cable, SSH, or Telnet. Enter privileged EXEC mode with the enable command and provide the password if prompted .
Enter Global Configuration Mode Use the command configure terminal to enter global configuration mode .
Select the Management Interface For most switches, VLAN 1 is the default management VLAN. Enter its configuration mode:
CodeCopyinterface vlan 1
Assign the IP Address and Subnet Mask Use the ip address command to set the static IP and subnet mask:
CodeCopyip address 192.168.1.10 255.255.255.0
Enable the Interface Bring the VLAN interface up with:
CodeCopyno shutdown
Configure the Default Gateway If the switch needs to communicate outside its local subnet, set the default gateway:
CodeCopyip default-gateway 192.168.1.1
Optional: Configure DNS Servers To enable name resolution, add DNS servers:
CodeCopyip name-server 8.8.8.8
Save the Configuration Exit to global configuration mode and save the settings to prevent loss after a reboot:
CodeCopyendwrite memory

If the switch is a Multilayer Switch (MLS), interfaces are Layer 2 by default. To assign an IP to a specific interface, convert it to Layer 3:
CodeCopyinterface fa0/1no switchportip address 192.168.1.20 255.255.255.0no shutdown
Use static IPs for core switches to avoid connectivity issues during DHCP changes or stacking failovers .

Check the IP configuration:
CodeCopyshow running-configshow ip interface brief
Test connectivity by pinging the switch from a host on the same network. By following these steps, the core switch will have a properly configured IP address for management and network communication, ensuring reliable access and monitoring.

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