Netgear M5300 setting DHCP helper?

[nicholab]

How do you set the DHCP helper on a Netgear M5300 switch I cant see a enable DHCP helper in the vlan settings. Do I only need to set in on my core switch if all vlan's terminate there? How can this be easy to do on HP and Cisco but hard on Netgear?

 

Currently my DHCP server has multiple ip addresses.

[Bruce123]

Not sure of the command for Netgear.

 

It's only needed on the core switch.

[Bruce123]

Just did a websearch and came across this:

 

https://kb.netgear.com/21990/How-do-I-configure-a-DHCP-L3-relay-using-the-web-interface-on-my-managed-switch?cid=wmt_netgear_organic

[Bruce123]

Sorry that's how to configure a DHCP server, not a DHCP relay.

[pmr]

Pretty straight forward really. From the GUI try this.

 

- - - Updated - - -

 

If you want to do it from the CLI

 

ip helper enable

ip helper-address xxx.xxx.xxx.xxx dhcp

Edited April 4, 2017 by pmr

[nicholab]

How can I tell if inter vlan routing is setup? I changed this setting this morning and had to revert the change as it cause problems. Looking at it it might be that that the Router is setup in DHCP pointing to the wrong address not the core switch and the the Edge security device had DHCP enable.

[pmr]

So provided routing is enabled on the box then inter-vlan routing will work. (With the exception of the management VLAN) if you are using that then generally you have to turn routing on for the management VLAN (and in some of the smart switches range it's not possible).

 

Below are a few bits of config taken from a live M5300 config to give you an idea (IP addresses changed)

 

ip routing

ip route 0.0.0.0 0.0.0.0 192.168.0.254

ip route 10.10.10.0 255.255.255.0 10.10.10.254

ip helper enable

ip helper-address 192.168.0.200

 

.......and the vlan section from the config

 

vlan database

vlan 9-20

vlan name 9 "vlan9"

vlan name 10 "vlan10"

vlan name 11 "vlan11"

vlan routing 1 1

vlan routing 10 2

vlan routing 9 10

 

- - - Updated - - -

 

also just drop me a PM if you need a hand.

[nicholab]

This explains why every thing broke. The management vlan currently has the router on it so how do I enable routing to that? Could you explain the vlan routing 1 1?

[nicholab]

Still cannot get the switch to route apparently the it is on in the web ui but I can't ping machine in other vlans. Should I upgrade to the latest firmware (stacked) ? How can the guide to making this work be so rubbish.

[nicholab]

Sorted it I was the other router causing issues.