Adding Helper IPs through CLI for PXE boot (hand-holding required)

[Tim Butterworth]

Hi There,

I’m setting up a new PXE server for windows deployment with IP Address x.x.x.x

I need to add new IP helper entries to the Ethernet and Server farm VLANs at both our (linked) sites. I’ve added it to the two Ethernet VLANs through the GUI, but there’s a known issue with the GUI that's preventing me from making the changes to the server VLANs that way so I’ll need to use the CLI (the MTU entry is displayed as an invalid value so cannot save changes, and I've been advised against trying to fix it by entering correct MTU values).

I’m not at all familiar with using the CLI to make changes. Please would someone help me by confirming that I’m using the appropriate lines to make the changes:

The server VLAN at Site 1 is

VLAN XXX

So the commands are:

int XXX

ip helper-address x.x.x.x

The respective VLAN at the second site is:

VLAN YYY

So the the command here should be:

int YYY

ip helper-address x.x.x.x

Thanks

Tim

[Torbjørn · Accepted solution]

Hi Tim,

You would do it like so for each VLAN you need to forward DHCP for:

int vlan XXX
 ip helper-address x.x.x.x

[balaji.bandi]

yes that is the correct syntax , make using source vlan IP you able to reach helper address, and helper address know how to reach back ?