https://community.extremenetworks.com/t5/extremeswitching-exos-switch/facing-internet-connectivity-issue-in-extreme-4220-series/m-p/116966#M22806 <P>You'll want to enable DHCP snooping on your ports. XIQ supports this, if you check your port templates out.</P> Sun, 01 Dec 2024 08:08:54 GMT Brent_Addis 2024-12-01T08:08:54Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/facing-internet-connectivity-issue-in-extreme-4220-series/m-p/116941#M22804 <P>Hi All,</P><P>I have a network subnet with 4220 series switches internet working very well but suddenly I dont know from where I got a new dhcp server and I lost the Internet connectivity what type of security measures I should do to protect my switches from this new dhcp server. Please help me&nbsp;&nbsp;</P> Thu, 28 Nov 2024 12:20:08 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/facing-internet-connectivity-issue-in-extreme-4220-series/m-p/116941#M22804 NVN_DHN 2024-11-28T12:20:08Z https://community.extremenetworks.com/t5/extremeswitching-exos-switch/facing-internet-connectivity-issue-in-extreme-4220-series/m-p/116966#M22806 <P>You'll want to enable DHCP snooping on your ports. XIQ supports this, if you check your port templates out.</P> Sun, 01 Dec 2024 08:08:54 GMT https://community.extremenetworks.com/t5/extremeswitching-exos-switch/facing-internet-connectivity-issue-in-extreme-4220-series/m-p/116966#M22806 Brent_Addis 2024-12-01T08:08:54Z