Hello,
Can
anyone tell me what the multiple line items are when running an MTR? I
previously though that the "extra" line entries were the various paths
that an ICMP packet may take to the destination, but I have observed
that the last hop will occassionally contain multiple entries, as well.
This is confusing me in my newbness. Can anyone help provide some
insight into this?
Thanks,
Kevin
Sample MTR (IPs have been changed to protect the innocent).
1.
10.16.224.1
0.0% 69 0.3 0.3
2.
10.7.255.8
0.0% 69 0.3 0.4
3.
10.7.127.135
0.0% 69 0.4 0.7
4.
10.11.62.2
0.0% 69 0.7 2.2
5.
10.15.107.128
0.0% 69 1.4 8.1
6.
10.15.96.113
0.0% 68 46.4 37.2
10.15.101.150
10.15.105.18
7.
10.15.101.154
0.0% 68 90.4 66.9
10.15.96.120
10.15.96.54
10.15.100.67
8.
10.15.100.136
0.0% 68 84.5 94.4
10.15.108.119
10.15.101.152
10.15.108.2
10.15.96.110
10.15.108.117
10.15.101.144
10.15.96.80
9.
10.15.102.114
0.0% 68 78.8 88.7
10.15.96.217
10.15.108.117
10.15.96.219
10.15.108.115
10.15.96.223
10.15.96.221
10.15.108.0
10.
10.73.188.43
0.0% 68 85.0 86.4
10.15.96.217
10.15.96.221
Hi Kevin,
If you see how to read MTR output just check the below example which has the heading
ACME (0.0.0.0) Sun May 4 20:08:00 2008
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 192.168.2.1 0.0% 24 1.9 2.1 1.1 13.8 2.6
2. 192.168.1.1 0.0% 24 2.8 2.4 1.9 3.2 0.4
3. 194.19.98.129 95.7% 24 22.4 22.4 22.4 22.4 0.0
4. 195.204.200.13 4.2% 24 29.4 24.3 16.6 36.2 5.2
5. 194.19.81.37 0.0% 24 36.5 32.1 19.3 48.7 6.7
The above output shows the packet loss occured while the device coming in between to destination with ping responce of last,latest and avg fromwhere we can come to conclusion where is the problematic area like if you see the above output router at 194.19.98.129 is having haigh packet loss,it can be problem with routing protocol, if the lag is a bad route, cached arp, or bad routing tables.
Hope to Help !!
Ganesh.H
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