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

[KC7]

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.

[WillyHe]

Hello,

Don't know if the feature is supported on " Data Center (VDX)" but on VOSS/Fabric Engine devices it is by the "DHCP Smart Relay for Secondary IP Interfaces", introduced in v8.10, see VOSS or Fabric Engine User Guide.

Hope it helps