DHCP relay question on the CBS350 switch

navs1888 · ‎08-04-2023

Hi i have a question,

I have a single CBS350 switch

I have a DHCP server sitting behind VLAN 2 with IP address 10.231.0.21
I have clients sitting behind VLAN 32.
Both VLAN interfaces have an ip address assigned.

Am i right the only configuration i need on the switch is globally

ip dhcp relay address 10.231.0.21
ip dhcp relay enable

And under VLAN 32

ip dhcp relay enable

Is there anything else i need to configure, i assume i don't need to enable relay on the server side or under the physical interfaces in vlan32, or require option 82 as each vlan interface has an ip address, also any debug commands i can run on the switch itself.

For extra info

H101-CBS350-CORE01#show ip dhcp relay
DHCP relay is globally Enabled
Option 82 is Disabled
Maximum number of supported VLANs without IP Address is 256
Number of DHCP Relays enabled on VLANs without IP Address is 0
DHCP relay is not configured on any port.
DHCP relay is enabled on Vlans: 32-35,898
Active: 32-35,898
Inactive:
Global Servers: 10.231.0.21

thanks

Flavio Miranda · ‎08-04-2023

Hi @navs1888

Yes, that´s it. Option 82 is not required for PC, only for Access Point if you have a WLC.

Under IPv4 configuration, IPv4 interface, check the option IPv4 Routing Enable, if not yet.