Cannot pull dhcp ip switchport problem?
Posted on 2010-11-17
I have a 2960 connected with 1gb copper to our 4507 core. Recently, we've noticed we cannot pull ip addresses from some of the switch ports, via DHCP. Specifically ports 1-3
What would be the cause of this? There are 161 total mac addresses in the cam table. Several of them are learned via the uplink to the core. I have over 8000 mac entires free, so I don't think my CAM table is full
We have an IP phone which can plug into the mentioned switchports, and pull an IP via DHCP no problem. PCs cannot pull an IP if plugged directly into the switchports. However, if plugged into the back of the avaya phone, they can pull an ip
These switchports were also trunk links, with a default vlan in the data network. I changed some to a regular access port, and the pcs still could not pull an IP