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juniper ex4200 iphelper

Posted on 2012-03-26
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Last Modified: 2015-01-30
hello
we have a ex4200 juniper switch

we Vlan 5 for the lan – with a dhcp server – 192.168.20.223
our Clients is in vlan 19 –

How to make an ip helper for this  ?
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Question by:roi_tkh
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by:Khandakar Ashfaqur Rahman
ID: 37770332
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Flightless earned 500 total points
ID: 37792888
Hey roi_tkh,


set forwarding-options helpers bootp server 192.168.20.223
set forwarding-options helpers bootp source-address-giaddr

OR

set forwarding-options helpers bootp interface vlan.19 server 192.168.20.223
set forwarding-options helpers bootp interface vlan.19 source-address-giaddr

The "source-address-giaddr" ensures that the dhcp request comes from the layer 3 interface of vlan.19 thereby ensuring that the client gets the correct address assignment from the dhcp server.

Cheers,

Bailey
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