Posted on 2016-07-22
I have a site that has about 3 workstations, and IPs were statically assigned (configured on workstation and on infoblox (DHCP and DNS records created). There are two switches, a core and access switch, both are LAN base images and use the router (2821) to route. There is only one VLAN (VLAN1). I recently added ip-helper addresses on the router's interface for dhcp/dns (both services are working fine), but when I change the workstation from static to DHCP, it doesn't pick up an IP address.
It''s statically assigned in infoblox and dns records are still there for this workstation. Could this be causing the issue of the workstation not receiving a leased IP?
Should the ip helper be assigned on VLAN 1 on the switches? (A similar site has it on the router's interface)
I will try to get a resource on site to connect to the switch with another laptop.
ip address 10.124.117.1 255.255.255.128
ip helper-address 184.108.40.206
ip helper-address 220.127.116.11
no ip redirects
no ip proxy-arp
ip flow ingress
ip route-cache flow
service-policy input REMARK-TO-ZERO
ip address 10.124.117.3 255.255.255.128
no ip route-cache
ip default-gateway 10.124.117.1
description Router Gi0/1
switchport trunk allowed vlan 1
switchport mode trunk