How to configure DHCP relay for the Secondary IP interface of a vlan?

KC7 — Tue, 07 Jul 2026 06:33:30 GMT

Hi All,

DHCP relay is currently configured on VDX NOS as shown below.

------------------------------------------------------------------------------------

rbridge-id 1

interface Ve 100

ip dhcp relay address 172.27.111.11

ip address 10.10.10.2/24

ip address 20.20.20.2/24

ip address 30.30.30.2/24

ip icmp rate-limiting 100

vrrp-extended-group 51

virtual-ip 10.10.10.1

advertisement-interval 1

enable

no preempt-mode

priority 110

advertise-backup

short-path-forwarding

vrrp-extended-group 53

virtual-ip 20.20.20.1

advertisement-interval 1

enable

no preempt-mode

priority 110

advertise-backup

short-path-forwarding

vrrp-extended-group 56

virtual-ip 30.30.30.1

advertisement-interval 1

enable

no preempt-mode

priority 110

advertise-backup

short-path-forwarding

------------------------------------------------------------------------------------

DHCP relay is working properly for clients in the primary IP subnet, but it is failing for clients in the secondary IP subnet.

1) Primary IP subnet (ip address 10.10.10.0/24)

2) Secondary IP subnet (ip address 20.20.20.0/24)

3) Secondary IP subnet (ip address 30.30.30.0/24)

Are there any additional commands or configuration settings required to enable DHCP relay for clients in the secondary IP subnet?

Thanks.

topic How to configure DHCP relay for the Secondary IP interface of a vlan? in Data Center (VDX)