hi peeps,
I am curious how the following concept really works...
I have an SVI which looks like this:
interface Vlan200
ip vrf forwarding GUEST
ip address 10.200.0.254 255.255.255.0
ip helper-address global 10.10.10.10
As you can see, this SVI is member of VRF GUEST. We have a DHCP server living in VLAN10, which is not a member of any VRF, but instead lives in the global routing table.
I would like to hand out IP addresses to the clients within VRF GUEST, so Cisco recommends using the "ip helper-address global" command. If i've understood this command right, this means that you're able to relay DHCPREQ's from VRF GUEST to the DHCP server living in the global routing table. This looks like some kind of leaking. When the DHCPREQ's are received by the DHCP server, how is it going to respond, and how will the switch know, that these DHCPOFFERS need to be routed(leaked) from VLAN10 to VLAN200?
any help is appreciated...
