There are many reasons the ProxySG interfaces may detect input errors. Some of these causes may be related to bad cables, defective interface on switch/router/sg, duplex mismatch, etc.
To determine the root cause, it is important to try various simple troubleshooting actions such as the following:
- Swapping cables
- Swapping ports on switch/router/SG/Firewall and/or other
- Hard coding duplex and speed settings on both the SG and interconnected devices
- Swapping devices (e.g. changing the switch out with another)
- Restarting SG and/or interconnected devices
These basic troubleshooting steps may save time by helping you find the solution prior to opening a Blue Coat technical support service request.