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05-10-2022 01:28 PM
05-10-2022 01:28 PM
DHCP Problem with HP 1820 series switches (layer 2)
I have what should be a fairly simple setup but I also have a problem I can't figure out. Anyone who is connected to my core switch gets a DHCP lease virtually instantly. If you are connected to any other switch in the stack it takes between 42 seconds to three minutes to get a lease. The connection goes through stages - no network detected - identifying network - no internet access - DHCP lease full access. Here is my config:
Forinet firewall which is also my DHCP source
Core Switch - Aruba 2540 layer 3
Remainder of the stack - HP 1820 48G layer 2 switches. Each 1820 has a pair of ports in a trunk set to load balance connected to the core.
Since the 1820s are layer 2 there isn't the option of adding the DHCP relay/helper. Is there something I can do to fix this? When I leave my desk for a meeting and undock my laptop, then return and dock it again it takes an unreasonable amount or time, as mentioned above. Yes, I have actually sat many times with a stop watch and timed it... never less than 42 seconds and out as far as 3 minutes to get a lease.
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05-10-2022 09:43 PM
05-10-2022 09:43 PM
Re: DHCP Problem with HP 1820 series switches (layer 2)
Hello @mandack,
HPE Networking forum has moved. For HPE networking and Aruba product queries, request you to visit and post your query in the Aruba Airheads Community using the link below:
https://community.arubanetworks.com/discussion
You can refer to the below link as well for more details:
HPE Networking forum migration to Aruba Airheads c... - Hewlett Packard Enterprise Community