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ICX7450 lost IP address after firmware update to 08.0.30h and serial console shows no signs of life

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techdep
New Contributor

‎02-03-2026 06:55 AM

Hi,
I've upgraded the firmware of our ICX7450-24P (primary image) and after reboot the switch works normally but it is no longer reachable at his IP address.

The serial console shows no signs of life after connecting to it with a Wirenest Console Cable (for use with ICX7250, ICX7450 ICX7750 Switches aftermarket replacement for 50-1000122-01 https://www.amazon.com/Wirenest-Console-Brocade-ICX7250-Switches/dp/B0BF5Z5X8Z ) and with a tested USB to serial adapter. 

Do you have any suggestions for getting the console back?

Can a factory defaults reset fix it?

Is there a way to start with the secondary image without interacting with the serial console?

Many thanks in advance.

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BenBeck
Moderator
Moderator
In response to techdep

‎02-05-2026 06:02 AM - edited ‎02-05-2026 06:08 AM

What doc are you looking at? All current code streams will for sure have DHCP client enabled in default configuration and it has been that way as long as I can remember (worked on ICX for 14 years). It should be able to pull one on data and mgmt ports. With that said, 8030 is long unsupported and I have not worked on that code in many years. If your switch is up and running, I would advise trying to get it connected to something with LLDP, so you can find the IP and attempt telnet/SSH. I will see if I can confirm 8030 behavior.

Edit: Safest option is indeed to get the correct console cable

 

 

Ben Beck, RCNA, RCNI, Principal Technical Support Engineer
support.ruckuswireless.com/contact-us

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BenBeck
Moderator
Moderator

‎02-03-2026 06:59 AM

Have you confirmed the console works on another switch? I am not familiar with that cable. If there is no output from console *and* we know the console cable works correctly, the box is likely dead. 

 

Ben Beck, RCNA, RCNI, Principal Technical Support Engineer
support.ruckuswireless.com/contact-us
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techdep
New Contributor
In response to BenBeck

‎02-03-2026 07:11 AM

Thanks for the immediate reply.
We don't have any other switch with the mini-usb connector so we don't know if the cable is good or not.
We can't find the original cable for purchase.
The box is functional from a network point of view, the only thing not functioning is the serial connection.

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BenBeck
Moderator
Moderator
In response to techdep

‎02-03-2026 07:14 AM

Got it. My hunch would be that the box is likely fine then and the cable may be suspect. Are you seeing the console in device manager and able to get the correct COM port?

If FastIron is actually running, you could trying connecting it to another switch and see if there is information in LLDP neighbor tables. There could be an IP there and you could try telnet/ssh. 

With that said, it may be stuck at bootmon, but very hard to say unless we can get access. 

 

Ben Beck, RCNA, RCNI, Principal Technical Support Engineer
support.ruckuswireless.com/contact-us
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techdep
New Contributor
In response to BenBeck

‎02-03-2026 07:49 AM

I use linux so no device manager but with minicom the status bar say "Offline".

No LLDP info about the switch.

Do you know where to buy the right cable or a tested alternative?

A factory defaults reset is dangerous?

We have no particular configuration on the switch, no VLAN etc.

Many thanks! 

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