Can't Access GS1900-24HP After Firmware Upgrade on the Network

zyxeluser100
zyxeluser100 Posts: 2
edited August 2022 in Switch
I just updated to the latest firmware on a GS1900-24HP that I purchased in 2015. After resetting, the admin credentials would not authenticate and I could not login. The release notes mentioned an algorithm change, so I reset the switch (Held down the button on the front 10 seconds and the unit power cycled). Now, the switch does not come up a network as 192.168.1.1 on the network. I've reset it 3 or 4 times now, and no dice. The switch still functions as a switch, but it won't come on the network as 192.168.1.1. Is there any recourse? It doesn't look like this model has a COM port.

Accepted Solution

  • mMontana
    mMontana Posts: 1,425  Guru Member
    Zyxel Certified Network Administrator - Switch 50 Answers 1000 Comments Friend Collector
    Answer ✓
    Did you look for a "not expected" IP address on your DHCP server?

All Replies

  • mMontana
    mMontana Posts: 1,425  Guru Member
    Zyxel Certified Network Administrator - Switch 50 Answers 1000 Comments Friend Collector
    Answer ✓
    Did you look for a "not expected" IP address on your DHCP server?
  • zyxeluser100
    zyxeluser100 Posts: 2
    Ha! thanks, that found it. Seems so obviously after the fact.
  • mMontana
    mMontana Posts: 1,425  Guru Member
    Zyxel Certified Network Administrator - Switch 50 Answers 1000 Comments Friend Collector
    It was one of the options, the Switch did not keep up the configured Ip and went into DHCP mode... :-)
  • Zyxel_Melen
    Zyxel_Melen Posts: 3,182  Zyxel Employee
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    Hi @zyxeluser100,

    You also can use ZON to find your device.
    Here is the download link.
    Zyxel Melen


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