Extreme XOS and IP Helper configuration

I need to know how I can configure my Extreme x450 core switch to be able to handle what cisco refers to as IP Helper statements. I need to also know how to allow broadcast traffic, specific traffic if needed, across multiple VLAN's on the Extreme.

Thanks
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tobyhansenAsked:
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luc_roySystem AdminCommented:
Disabled Tagged VLANID "#" on DHCP Server port
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tobyhansenAuthor Commented:
We have a layer 3 switch handling the routing for our VLAN's. I have DHCP forwarding working by using the bootprelay command on the Extreme equipement.... However IP helper-address comes with several other protocols (UDP) that are also forwarded on top of just DHCP.. such as DNS, 137-138, NTP and a couple more... I am afraid when I install this we will have issues. The DHCP server goes into one of the switches outside our core switch.. on another vlan.
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luc_roySystem AdminCommented:
can you draw the network?
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