Just a tip, but you cannot really determine packet loss on an MPLS network with
a traceroute. The nodes between the provider edge routers may not even
represent your real path. Also, provider routers within their network will be
handling pings much differently than they handle your actual traffic. The
pings require processing whereas your MPLS traffic will be label switched.
Much different performance.
Now from the trace below :
If you have zero packet loss to the final hop, how could you possibly have
packet loss along the path? Answer, you can't and there is no loss between you
and the final hop for your traffic. What you are seeing is the intermediate
node not bothering or being too busy to answer your ping.
Steven Naslund
Chicago IL
From: NANOG <nanog-boun...@nanog.org> On Behalf Of K MEKKAOUI
Sent: Monday, September 23, 2019 4:10 PM
To: nanog@nanog.org
Subject: NetworkLayer
Hi
Anyone from Network Layer to help? We are experiencing packet loss on the
their MPLS network. I have attached a screenshot. Thank you
4 38.140.46.161 0% 31 16.3ms 18.6 6.4 153.1
24.9
5 154.54.45.113 0% 31 9.8ms 13.9 9 19.2
2.9
6 62.115.168.46 0% 31 12.5ms 16.3 10.2 66
9.7
7 62.115.134.48 0% 31 25.6ms 23.4 16.5 39.2
5.7
8 62.115.51.98 0% 31 19.4ms 22.6 16.6 49.9
6.1
9 50.97.19.12 0% 31 20.2ms 22 12.8 37.9
4.3 <MPLS:L=388134,E=0>
10 50.97.19.15 0% 31 35.9ms 33 28.6 41.7
3 <MPLS:L=361891,E=0>
11 50.97.17.30 71% 31 timeout 35.3 29.8 42.8
4.9 <MPLS:L=624054,E=0>
12 169.45.18.4 40% 31 58ms 56.4 50.6 61.6
3.1 <MPLS:L=311929,E=0>
13 169.45.18.41 0% 30 149.6ms 62.7 50.5 149.6
23.4
14 169.48.118.131 0% 30 133.4ms 59.8 50.2 133.4
14.7
Karim
