Zyxel_Derrick  Zyxel Employee

Hi MartinM Due to the security concern, there is no backdoor to decrypt password. However, you can press the reset button on the front panel for more than 7 seconds and then the switch will rollback to factory default. Thanks Best regards, Zyxel_Derrick

Hi Norbert I think the problem is on the port setting between router and first switch. You should configure VLAN 2 with tag instead of configuring untag on both VLANs. Please try to configure the port to VLAN 2 tagged and try again Thanks Best regards, Zyxel_Derrick

Hi Based on your description, I have tried to do a simple lab.The topology is as below:L3 device P2 -------------------P1 GS1200-------------- P3 PC A in VLAN2, P5 PC B in VLAN1(192.168.1.1) (192.168.1.3) (192.168.2.100) (192.168.1.200)(192.168.2.1) On GS1200, I configured VLAN2 on port 1 and 3, port 1 is tagged and port 3…

Hi @HakimzyanovA Good day This is the current behavior of command "show running-config" It can't display all configurations at one time Thanks Best regards, Zyxel_Derrick

Hi @fleptin Good day It seems like this device may have some issues. Therefore, please send it to local reseller for repairing. Thanks Best regards, Zyxel_Derrick

Hi rmarmol80 I have sent a PM to you for further information Please check it Thanks Best reagrds, Zyxel_Derrick

Hi rmarmol80 This is the known issue for GS1900 listed in the release note that downgrade from V2.50 to V2.40 and below versions will cause admin account unable to login. This is due to password authentication algorithms are enhanced for vulnerability issues and is not backwards compatible. Therefore, the only way to login…

Hi James Strickland GS1200 series doesn't support Nebula. You can check the link below to find what model supports Nebula currently. https://businessforum.zyxel.com/discussion/2875/what-model-supports-nebula-cc-currently Thanks Best regards, Zyxel_Derrick

Hi tsuki_net Please try to configure VLAN 20 on port 1 and set to tagged out then it should be no problem Thanks Best regards, Zyxel_Derrick

Hi Link aggregation provides load sharing and redundancy, it will not aggregate the link speed after enabling it. You can set up either static or LACP. The link below is the related article in our KB system. Please check it and it may help you to make a decision…

Hi Warnis Glad to hear that you can login switch The current behavior of switch is that when you reset switch or use it for the first time, switch will try to discover if the network environment has dhcp server or not. If yes, switch will use the ip address that assigned by server. If no, switch will use 192.168.1.1 as its…

Hi Warnis We have tried to upgrade our GS1900-24E from FW 2.40 patch 2 to FW 2.50 in our local test. However, we still can't replicate the issue you have encountered. In our local lab, we have changed the password. After upgrading firmware, the switch can still be logged in. Also, we have tried to reset switch to default…

Hi Warnis May I know what kinds of browsers you use? Also, have you ever tried to use another browser or clear the browser's cache? If yes, the result is the same? Zyxel_Derrick

Hi Warnis Welcome to Zyxel CommunityNormally, after upgrading firmware and rebooting, switch will run start-up config.If the password had not been changed and saved before, normally it can login with default account and password.Also, you mentioned that you had tried to reset but doesn't work.According to user guide P.34,…

Hi Gerli GS1100 series is unmanaged switch Therefore, it doesn't have web interface Thanks Best regards, Zyxel_Derrick