Nortel CallPilot 1001rp, Installation And Configuration Manual

Page: 53 / 368

October 2002 Using Windows NT online diagnostic tools
Part 5: 1001rp Server Maintenance and Diagnostics 53
To run the ping command from Windows NT 4.0
1 Click Start
➝
Programs
➝
Command Prompt to display the MS-DOS
command prompt window.
Result: The MS-DOS Command Prompt window appears.
2 At the MS-DOS prompt, type ping <destination IP address> (for
example, ping 200.286.32.0), or ping <computer name> .
3 Press Enter.
Result: The system displays the ping results.
4 Type Exit to exit MS-DOS and return to Windows NT 4.0.
The tracert command
This utility determines the route taken to a destination.
How tracert works
The tracert utility follows several steps to complete its task:
Tracert sends Internet Control Message Protocol (ICMP) echo packets
with varying Time-To-Live (TTL) values to the destination.
Each router along the path must decrement the TTL on a packet by at
least 1 before forwarding it, so the TTL is effectively a hop count.
When the TTL on a packet reaches 0, the router sends back an ICMP
Time Exceeded message to the source system.
Tracert determines the route by sending the first echo packet with a TTL
of 1, and incrementing the TTL by 1 on each subsequent transmission
until the target responds, or the maximum TTL is reached.
Tracert then examines the ICMP Time Exceeded messages sent back by
intermediate routers.
Tracert syntax
tracert [-d] [-h maximum_hops] [-j host_list]
[-w timeout] [target_name]