Jun 06, 2026
Hi All, We have 2 x Nexus 7 cores and several access switches 3750 + 2960 and several VLANs. All working well until recently we have a couple of users in VLAN say 200 reported they can
Aug 29, 2025
Recently, whenever we setup a new device or a user from another site works from this location and connects to our network, they are given an IP address through DHCP with all the correct
Oct 21, 2025
Troubleshoot, debug and fix DHCP server conflicts - problems on Cisco Catalyst switches & routers. DHCP debug commands, identify ''ip address pool empty'' & more
Apr 08, 2026
I''m setting up a network where multiple subnets share a single DHCP server. The router can ping the DHCP server, but end devices connected to the
Jan 09, 2026
Daisy chained Access switch to another Access switch not getting the ip from DHCP scope via Clearpass. I have deployed a colourless port model at one of our clients premises and it
Oct 16, 2025
When a switch functions as a DHCP server, PCs connected to the switch cannot obtain IP addresses or obtain IP addresses after a long delay.
Mar 07, 2026
Problem: A device connected to vlan 102 on Procurve 5406zl switch cannot communicate with Cisco ASA 5510; therefore, cannot get DHCP
Jun 10, 2026
DHCP is provided by a Linux DHCP server sitting on the same vlan on another switch. Everything had been working fine for the last few years, then, a few weeks ago, machines in the
Feb 18, 2026
DHCP Server The DHCP server assigns IP addresses from specified address pools on a switch or router to DHCP clients and manages them. If the DHCP server cannot give the DHCP client the
Feb 20, 2026
Solve internet issues with our guide on fixing DHCP errors. Adjust DHCP settings on your computer or router quickly and easily.
Feb 23, 2026
Can''t Reach DHCP Server: 5 Ways to Fix It Dynamic Host Configuration Protocol (DHCP) is a fundamental network protocol that automatically configures devices on a network,
Jul 19, 2025
Diagnose and fix DHCP server issues preventing IP assignment. Follow this guide to ensure devices receive valid IPs for uninterrupted network connectivity.
May 30, 2026
A DHCP error happens when a device can''t get an IP address for internet access. To fix a DHCP error, try using the Windows Network Troubleshooter or check network and router settings.
Jun 01, 2026
Properly functioning DHCP ensures that all devices on a network can communicate effectively, access network resources, and connect to the internet
Feb 28, 2026
We''re using Ubiquity WAPs with Cisco switches all over the place. After the most recent firmware updates we all of a sudden had entire sites with wireless clients unable to obtain a DHCP address.
Jan 10, 2026
I have configure this 2960 and cannot obtain an IP address from a dhcp server connected to random port on the dumb switch. I have port 0/24 as link between 2960 and Linksys SR2016
Jun 23, 2026
This document describes how to troubleshoot DHCP on Catalyst 9000 switches.
Jun 29, 2026
the dhcp server its on vlan 254 (172.16.0.0) each VLAN helper is supposed to take care of routing dhcp (172.16.0.109) but something s missing physically its on another switch, but I can
Sep 23, 2025
The other access switches as I''ve name them are connected to the core switch. I''ve been trying to create VLANs that pass DHCP traffic to my APs for several SSIDs I have created
Jun 24, 2026
The switch is preventing you from enabling the DHCP server because one of the interfaces on the switch is still configured to use DHCP to obtain an address. This prevents DHCP
Apr 28, 2026
Layer 3 switches cannot run DHCP servers on uplink interfaces with IOS XE 17.15+. Post-upgrade, Interfaces with both Preferred Uplink and DHCP server configurations will have the
Apr 19, 2026
hi mates, I am hoping some one can help me about the below problem: DHCP doesnt work through cisco switch. on my LAN; - there is a DHCP server (PC) and clients (PCs) with
Apr 29, 2026
If the DHCP server cannot give the DHCP client the requested configuration parameters from its database, it forwards the request to one or more secondary DHCP servers defined by the network
Jun 28, 2026
Cisco Community Technology and Support Networking Switching DHCP works, but cannot access Internet - Cisco 2600 4220 5 10
Oct 06, 2025
A Layer 2 switch cannot be a DHCP server, but it is still part of the DHCP path — it transparently forwards DHCP broadcast frames between clients and the relay or server.
Nov 23, 2025
I am having an issue with DHCP not traversing to devices behind a switch. I have many other switches deployed with nearly the same configuration that are able to receive a DHCP address.
May 30, 2026
Do you have DHCP snooping turned on? If so, ensure that all of the proper ports are trusted.
Jun 19, 2026
This document describes how to troubleshoot slow or intermittent DHCP address allocation failures on Catalyst 9000 switches as DHCP relay agents.
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