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Author Topic: packet loss at tserv15.lax1  (Read 220 times)

j296

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packet loss at tserv15.lax1
« on: September 25, 2020, 02:33:41 PM »

I'm seeing 60% packet loss at tserv15.lax1.  That's... fairly unpleasant.
Does anyone else see this kind of problem?


                                       Packets               Pings
 Host                                Loss%   Snt   Last   Avg  Best  Wrst StDev
 1. 2001:470:d:aaa::1                 0.0%    30    0.7   0.7   0.6   0.9   0.1
 2. tunnel201234.tunnel.tserv15.lax1 60.0%    30   17.0  30.3  15.2 129.7  32.3
 3. 10ge9-12.core1.lax1.he.net        0.0%    30   30.2  31.6  12.6 141.4  34.5
 4. 100ge14-1.core1.lax2.he.net       0.0%    30  134.0  50.2  12.6 216.5  54.3
 5. 2001:470:1:4a0::2                 0.0%    30   43.8  22.6  12.2 102.6  19.5
 6. 2001:1878:0:2::3                 20.7%    29   16.5  27.3  13.5 115.0  26.8
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broquea

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Re: packet loss at tserv15.lax1
« Reply #1 on: September 25, 2020, 03:07:24 PM »

The PL didn't continue next hop, its 0% until the destination. Might have loss on the return path or an issue itself at the destination.
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j296

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Re: packet loss at tserv15.lax1
« Reply #2 on: September 25, 2020, 03:21:03 PM »

Thanks for the quick reply.  Btw, some of the IPs and names in the original post were anonymized.

I ran mtr from outside in, and it sees losses of 1 to 8% ofver all the hops.  I see 60^ loss on the tserv15.lax1 hop,a dn also 60% at hops near the destination.  Here is tracing to google:

 2. tunnel201234.tunnel.tserv15.lax1 60.0%   336   15.1  30.0  13.5 192.7  33.2
 3. 10ge9-12.core1.lax1.he.net        1.8%   336  128.7  29.1  12.0 172.5  33.7
 4. 100ge14-1.core1.lax2.he.net       2.1%   336   13.3  34.9  12.1 430.9  44.3
 5. 2001:504:13::210:41               2.4%   336   12.4  26.4  12.4 181.5  28.8
 6. 2001:4860:0:110d::1              57.6%   336   54.3  26.4  12.5 161.8  25.4
 7. 2001:4860:0:1::430f              77.3%   336   24.9  28.1  13.4 146.2  30.2
 8. lax31s06-in-x04.1e100.net         2.4%   336   33.5  25.7  11.1 172.9  31.0

vs. in (from a different far side, not google)

 1. 2001:1878:400::                  1.7%   466    0.5   0.3   0.2  13.0   0.6
 2. 2001:1878:18:5::3                 9.9%   466    1.2   1.2   1.1   2.7   0.3
 3. ve338.core1.lax2.he.net           1.7%   466    0.9   3.7   0.9  49.0   8.6
 4. 100ge2-2.core1.lax1.he.net        1.7%   466    1.0   3.3   0.9 453.2  24.0
 5. tserv1.lax1.he.net                2.1%   465    4.7  19.7   3.5 171.9  34.1
 6. ???
 7. me        4.7%   465   55.8  36.7  12.4 181.9  42.4

I'm not really sure how to use mtr to tell which side has the loss, unfortunately.
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