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SX-200 ICP MX Technician’s Handbook
General Network Troubleshooting
It is beyond the scope of this document to cover everything you need to
know to diagnose and eliminate network faults. The information provided
here is only an overview of network troubleshooting. For more information,
see the SX-200 ICP Technical Documentation and the IP Technology
Reference companion to the Advanced Installation and Maintenance
Course.
Check List
Do you have a Network topology diagram? If not, it is essential to
obtain one or create one for your records.
- Is your network Managed or Unmanaged? Managed Layer 2
switches allow you to set up VLANs which are recommended,
especially if you are experiencing problems with voice quality.
- What is your Layer 2 port setup: untagged, tagged, default VLAN,
other VLAN setups?
- How is the router configured: route from one VLAN to another?
- Which Layer 2 switches are the routers, servers, and SX-200 ICP
attached to?
- Is the network configured in a tree structure? Are there any
roadblocks?
- Are your IP Phones distributed on all of the Layer 2 switches or one
Layer 2 switch?
- Is the 2nd Port on the IP Phones enabled for PC connection? What
type of IP Phones are being used?