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TCP/IP Network Status Utility (netstat)
(Page 6 of 6)
Sample Windows netstat Output
The output from the Windows netstat
program is fairly similar to that of the UNIX utility when the same
or similar options are given, but the UNIX version usually provides
more details. I have shown in Table 302
an example illustrating TCP/IP statistics on my home Windows XP machine,
using “-p icmp” to restrict the output to ICMP stats only.
Table 303
shows the routing table display from netstat (which I modified slightly
to fit the size limits of the table.) You would get similar output as
these from the UNIX “netstat -s -p icmp” or “netstat
-r” commands, but additional information would be provided.
Table 302: Sample ICMP Statistics From Windows netstat Utility
D:\aa>netstat
-s -p icmp
ICMPv4 Statistics
Received Sent
Messages 243 248
Errors 0 0
Destination Unreachable 9 4
Time Exceeded 7 0
Parameter Problems 0 0
Source Quenches 0 0
Redirects 0 0
Echos 224 20
Echo Replies 3 224
Timestamps 0 0
Timestamp Replies 0 0
Address Masks 0 0
Address Mask Replies 0 0
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Table 303: Sample Routing Table Display From Windows netstat Utility
D:\aa>netstat
-r
Route Table
=================================================================
Interface List
0x1 ........................... MS TCP Loopback interface
0x2 ...00 04 76 4e 75 3f ...... 3Com 10/100 Mini PCI Ethernet
=================================================================
=================================================================
Active Routes:
Network Dest Netmask Gateway Interface Met
0.0.0.0 0.0.0.0 148.64.128.1 148.64.133.73 30
127.0.0.0 255.0.0.0 127.0.0.1 127.0.0.1 1
148.64.128.0 255.255.192.0 148.64.133.73 148.64.133.73 30
148.64.133.73 255.255.255.255 127.0.0.1 127.0.0.1 30
148.64.255.255 255.255.255.255 148.64.133.73 148.64.133.73 30
224.0.0.0 240.0.0.0 148.64.133.73 148.64.133.73 30
255.255.255.255 255.255.255.255 148.64.133.73 148.64.133.73 1
Default Gateway: 148.64.128.1
=================================================================
Persistent Routes:
None
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 Key Concept: TCP/IP implementations include the netstat utility to allow information about network status to be displayed. On UNIX systems, netstat is a full-featured program with many options arranged into option groups, each of which shows a particular type of information about the operation of TCP/IP protocols. On Windows systems, netstat is somewhat more limited in function but still allows a considerable amount of information to be displayed.
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