IP Source Guard (IPSG)

Hello Hind

In order for IP source guard to function with a voice VLAN, DHCP snooping must be enabled on that voice VLAN. Take a look at the following documentation from Cisco:

When you say IP Source Guard was failing, what do you mean exactly? If the issue was not DHCP snooping, please elaborate on the behaviour you are encountering and come back and let us know so we can continue troubleshooting.

I hope this has been helpful!