Sunday, May 17, 2020

Cisco 3850 - IP helper iOS 16.9

Has anyone else recently upgraded to iOS 16.9 and started to experience delayed or dropped DHCP traffic when using ip helpers?

We were forced to update iOS versions when we warranty replaced one switch of the stack. Since then, it takes clients 15 mins or so to get an IP address when relying on IP helpers.

If the DHCP server sits on the same vlan as the client, the client gets an address no problem.

Prior to the switch replacement and iOS upgrade, we’ve been running pretty smoothly for years using the same config.



No comments:

Post a Comment