Damian Gardner
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I need help with how to enter a IPHELPER address for a VLAN on my Cisco 9300 switch.
I need help with how to enter a IPHELPER address for a VLAN on my Cisco 9300 switch. it is currently set to an address, and I want to change it.
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In the event that the old IP helper methods don't work on those new Catalyst 9K units, you can move to the newer method of doing it, which is to setup relay pools.
The above commands are entered in global configuration mode. Replace "10.1.5.0 255.255.255.0" with the network address and subnet mask of the network that needs DHCP services. Replace "10.1.1.1" and "10.1.2.1" with the IPv4 addresses of your DHCP servers.
ip dhcp pool DHCP_Pool
relay source 10.1.5.0 255.255.255.0
relay destination 10.1.1.1
relay destination 10.1.2.1
The above commands are entered in global configuration mode. Replace "10.1.5.0 255.255.255.0" with the network address and subnet mask of the network that needs DHCP services. Replace "10.1.1.1" and "10.1.2.1" with the IPv4 addresses of your DHCP servers.
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If you don't "no" out the current ip helper address it will add an addtional ip helper address under the existing one. Jody is correct.
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sorry for the delay. awesome - I Appreciate the help guys.
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Example:
int vlan 5
ip helper-address 10.1.1.1