DHCP configuration through multilayer switch

[singhnavjot325]

hello everyone

i need help in some dhcp configuration

1 Multilayer switch ,2 PCs , 1 Server (tftp). it should have vlan 10 both PCs and need to do dhcp configuration with different ip addresses?

Example (PC-1 10.21.66.1)(PC-2 10.22.66.1) VLAN10 both

i am unable to get the ips through dhcp

[ammahend]

You have to use separate vlans or you will have to configure 2 vrf or have secondary ip on vlan svi in different subnet.

much easier to keep 2 vlans and configure dhcp pool

configure terminal
ip dhcp excluded-address 10.21.66.10 10.21.66.255
ip dhcp pool pc21
network 10.21.66.0 /24
default-router 10.21.66.1
dns-server 8.8.8.8

by the way what’s your use case for 2 subnet with same vlan.

[Richard Burts]

There is much that we do not know about your environment and your requirements and that makes it difficult to give good advice. Can you clarify a few things:

- you show 2 PCs and each with a specific IP address. Is it a requirement that each PC receive that specific address from DHCP? Or is it sufficient that each PC receive some address from DHCP?

- there is usually a one to one relationship between vlans and subnets (a single subnet is used in a single vlan, and a single vlan usually has a single subnet). Are you thinking of 10.21.66.1 and 10.22.66.1 as both in a single large subnet that contains both? Or are you thinking of 2 distinct subnets here?

- you show 3 devices that are capable of providing DHCP service to clients (multi layer switch, router, server). Which device do you intend to provide DHCP to the clients?