Eugene0x1

Dear Chris, Thank you very much for the proposed solution. I would like to summarize. The XS3800-28 switch was configured as DHCP relay. VLAN 12 was used for access to DHCP server. IP renew messages was not processed by DHCP snooping when it was enabled only on user VLAN. Enabling DHCP snooping additionally on the VLAN 12…

Dear Chris, Sorry for the delay. I have sent a private message to you.

Dear PeterUK, Unfortunately, the blocking of the request from the clients is not possible. Is it well known issue that XS3800-28 ignores DHCP renew requests?

Dear Chris, When ipconfig /renew executed manually on the Windows computer the leas time is updated on the client computer, it can be seen in the properties of a network adapter. The same time lease time for the record of this client is updated on the DHCP server as well. In other words, both client and DHCP server update…