Mitel 50005070 Instruction Manual download pdf (Page 286)

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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?

 Do the PCs perform adequately on the network—i.e., is this only a

problem affecting IP Phones?

- Is the problem an IP configuration issue on the IP devices—i.e.,

DHCP on PCs, DHCP on IP Phones or VLAN issue?

- Does it work by programming static IP addresses to the IP Phone?

To PCs?

- Can you route to the internet?

- Can you ping from PCs to all shared network devices (servers,

routers, printers, etc.)?

- Are PC file transfers extremely slow?

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Mitel 50005070 Instruction Manual Page 286