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Root cause analysis / Investigation

copilot.microsoft.com

Reference RCA-90D3547235335AF4

Microsoft Chat website

Measurement point: Stealth NYC, 32 Avenue of the Americas.

Published investigation. Updates run automatically.

01 / Network path

Network path.

Endpoint measurements / ICMP IPv4

Latency over time.

Successful endpoint RTT recordings from up to one hour before and after the event. Points are sampled from the retained history.

Enter time range

Times use the selected timezone; choices include recorded samples and intervals across the available chart.

Use the recordings table below to view latency values.
Successful RTT recording Event interval

09 Nov 2026 14:25 – 09 Nov 2026 21:29 UTC. Hover or tap to inspect; drag across the chart to zoom. On touchscreens, first choose Select time range. Escape or Reset zoom restores the full range. Missing recordings are gaps; this is not an application availability or packet-loss chart.

Select a recording to explore nearby path observations.

View recorded values
Successful ICMP IPv4 RTT recordings; displayed points are a sample of the retained records.
Recorded at (UTC)RTT
1.022 ms
1.044 ms
1.093 ms
1.079 ms
1.366 ms
0.980 ms
1.124 ms
1.397 ms
1.097 ms
1.017 ms
0.989 ms
1.815 ms
1.390 ms
1.003 ms
1.046 ms
0.980 ms
1.406 ms
14.427 ms
1.413 ms
1.037 ms
1.402 ms
0.943 ms
13.743 ms
0.962 ms
6.090 ms
18.779 ms
1.455 ms
1.014 ms
1.378 ms
1.381 ms
1.355 ms
11.103 ms
7.471 ms
1.368 ms
0.978 ms
1.020 ms
1.373 ms
17.426 ms
1.381 ms
1.445 ms
1.430 ms
2.857 ms
1.412 ms
1.412 ms
1.389 ms
1.386 ms
1.446 ms
0.989 ms
1.028 ms
1.452 ms
0.984 ms
0.974 ms
1.447 ms
1.406 ms
0.969 ms
0.992 ms
1.391 ms
1.326 ms
1.364 ms
1.558 ms
1.005 ms
1.379 ms
0.996 ms
1.090 ms
0.994 ms
1.483 ms
0.987 ms
1.392 ms
1.408 ms
1.540 ms
1.010 ms
1.393 ms
9.496 ms
2.447 ms
1.058 ms
1.066 ms
1.041 ms
1.059 ms
1.969 ms
1.438 ms
1.593 ms
1.391 ms
1.017 ms
1.408 ms
1.002 ms
1.425 ms
0.990 ms
1.500 ms
1.021 ms
1.078 ms
18.430 ms
0.984 ms
0.994 ms
0.997 ms
11.541 ms
1.235 ms
1.385 ms
1.004 ms
1.404 ms
1.003 ms
1.035 ms
1.440 ms
0.991 ms
1.758 ms
0.995 ms
1.003 ms
1.069 ms
15.034 ms
1.387 ms
13.835 ms
1.029 ms
1.060 ms
1.050 ms
1.126 ms
0.960 ms
0.952 ms
1.390 ms
1.044 ms
1.374 ms
1.394 ms
1.263 ms
1.426 ms
1.500 ms
1.025 ms
16.715 ms
1.408 ms
3.128 ms
19.391 ms
13.746 ms
1.367 ms
11.144 ms
1.487 ms
1.423 ms
1.052 ms
1.424 ms
16.965 ms
16.094 ms
1.097 ms
0.959 ms
1.007 ms
19.813 ms
1.376 ms
6.768 ms
5.467 ms
1.103 ms
19.052 ms
1.400 ms
14.426 ms
0.992 ms
0.978 ms
1.040 ms
12.378 ms
1.380 ms
11.663 ms
19.600 ms
13.396 ms
18.642 ms
1.024 ms
1.059 ms
1.078 ms
1.010 ms
18.203 ms
0.997 ms
1.088 ms
8.800 ms
1.438 ms
1.449 ms
0.973 ms
1.343 ms
1.000 ms
1.152 ms
1.401 ms
1.020 ms
11.599 ms
0.992 ms
1.419 ms
0.988 ms
1.002 ms
1.426 ms
0.982 ms
0.995 ms
1.408 ms
0.972 ms
3.841 ms
1.419 ms
1.025 ms
0.945 ms
1.374 ms
1.360 ms
1.399 ms
1.031 ms
0.966 ms
1.036 ms
1.492 ms
0.980 ms
1.408 ms
2.045 ms
0.989 ms
6.189 ms
1.091 ms
9.497 ms
1.003 ms
1.027 ms
16.426 ms
16.624 ms
17.029 ms
1.031 ms
0.947 ms
0.966 ms
1.051 ms
0.933 ms
1.395 ms
1.002 ms
1.155 ms
1.036 ms
0.996 ms
1.033 ms
1.512 ms
1.439 ms
0.965 ms
6.236 ms
0.984 ms
0.986 ms
1.354 ms
0.996 ms
10.374 ms
0.977 ms
1.021 ms
1.348 ms
1.016 ms
0.961 ms
0.961 ms
1.429 ms
1.080 ms
1.596 ms
1.354 ms
0.950 ms
1.059 ms
1.472 ms
1.405 ms
0.950 ms
1.418 ms
0.995 ms
1.506 ms
1.032 ms
1.425 ms
1.069 ms
1.372 ms
1.394 ms
0.995 ms
1.403 ms
0.958 ms
1.497 ms
0.967 ms
1.123 ms
0.975 ms
1.391 ms
1.000 ms
1.455 ms
1.412 ms
1.006 ms
0.939 ms
0.979 ms
1.421 ms
0.961 ms
0.973 ms
1.366 ms
1.371 ms
1.392 ms
1.432 ms
1.435 ms
1.569 ms
1.006 ms
1.366 ms
0.962 ms
1.372 ms
1.394 ms
0.969 ms
1.357 ms
1.071 ms
1.333 ms
1.044 ms
1.338 ms
1.410 ms
1.031 ms
1.010 ms
1.622 ms
1.369 ms
0.961 ms
1.410 ms
1.368 ms
1.512 ms
1.426 ms
1.404 ms
1.389 ms
1.359 ms
0.978 ms
1.377 ms
1.391 ms
1.375 ms
0.980 ms
4.317 ms
1.343 ms
10.809 ms
0.990 ms
1.513 ms
1.079 ms
1.048 ms
1.033 ms
3.216 ms
1.060 ms
10.345 ms
1.034 ms
0.973 ms
1.009 ms
0.959 ms
7.932 ms
1.363 ms
0.975 ms
1.033 ms
1.384 ms
1.427 ms
0.972 ms
1.388 ms
1.034 ms
0.967 ms
0.962 ms
1.425 ms
5.661 ms
1.028 ms
18.320 ms
1.390 ms
1.368 ms
1.421 ms
1.385 ms
0.990 ms
1.013 ms
1.010 ms
1.068 ms
1.364 ms
1.376 ms
1.356 ms
1.005 ms
1.397 ms
1.357 ms
1.406 ms
19.030 ms
0.966 ms
1.381 ms
1.032 ms
0.984 ms
1.395 ms
1.042 ms
1.380 ms
1.366 ms
1.550 ms
0.941 ms
8.038 ms
0.965 ms
Network path / recorded observations

Network path observations.

25 observations

Choose a measurement type to see the closest of the available sampled observations to the selected chart point. Each probe is separate and may follow a different path.

Before

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.128 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.180 msReply RTT AS8002 · Stealth
Before

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.203 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.211 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop4.957 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.259 msReply RTT AS13335 · Cloudflare
Before

ICMP traceroute · Destination 1

Comparison window · median of 19 traces


to UTC

  1. TTL 1 Stealth associated hop0.131 msMedian reply RTT19/19 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.182 msMedian reply RTT19/19 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop3.894 msMedian reply RTT10/19 replies · 52.6%ASN unavailable
  4. TTL 4 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  5. TTL 5 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  6. TTL 6 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
Before

TCP/443 traceroute · Destination 2

Comparison window · median of 18 traces


to UTC

  1. TTL 1 Stealth associated hop0.148 msMedian reply RTT18/18 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.189 msMedian reply RTT18/18 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop3.488 msMedian reply RTT9/18 replies · 50.0%ASN unavailable
  4. TTL 4 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  5. TTL 5 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  6. TTL 6 Destination reply1.279 msMedian reply RTT14/18 replies · 77.8%ASN unavailable
  7. TTL 7 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
Before

ICMP traceroute · Destination 3

Comparison window · median of 11 traces


to UTC

  1. TTL 1 Stealth associated hop0.133 msMedian reply RTT11/11 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.193 msMedian reply RTT11/11 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop6.746 msMedian reply RTT5/11 replies · 45.5%ASN unavailable
Before

TCP/443 traceroute · Destination 4

Comparison window · median of 12 traces


to UTC

  1. TTL 1 Stealth associated hop0.166 msMedian reply RTT12/12 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.185 msMedian reply RTT12/12 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop12.095 msMedian reply RTT7/12 replies · 58.3%ASN unavailable
  4. TTL 4 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  5. TTL 5 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  6. TTL 6 Destination reply1.319 msMedian reply RTT9/12 replies · 75.0%ASN unavailable
  7. TTL 7 Destination reply1.873 msMedian reply RTT3/12 replies · 25.0%ASN unavailable
Before

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.133 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.180 msReply RTT AS8002 · Stealth
Before

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.142 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.176 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.698 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.512 msReply RTT AS13335 · Cloudflare
Before

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.196 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.280 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop3.716 msReply RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop2.268 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.396 msReply RTT AS13335 · Cloudflare
During

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.136 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.180 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop1.106 msReply RTT ASN unavailable
During

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.164 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.178 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop0.806 msReply RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop3.874 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.371 msReply RTT AS13335 · Cloudflare
During

ICMP traceroute · Recorded address 2

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.120 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.179 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop17.979 msReply RTT AS13335 · Cloudflare
During

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.206 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.186 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop15.617 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.749 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Probe hopNo replyNo comparable RTT ASN unavailable
  7. TTL 7 Destination2.039 msReply RTT AS13335 · Cloudflare
During

ICMP traceroute · Destination 1

Comparison window · median of 9 traces


to UTC

  1. TTL 1 Stealth associated hop0.136 msMedian reply RTT9/9 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.192 msMedian reply RTT9/9 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop17.364 msMedian reply RTT7/9 replies · 77.8%ASN unavailable
  4. TTL 4 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  5. TTL 5 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  6. TTL 6 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
During

TCP/443 traceroute · Destination 2

Comparison window · median of 17 traces


to UTC

  1. TTL 1 Stealth associated hop0.172 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.196 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop5.413 msMedian reply RTT12/17 replies · 70.6%ASN unavailable
  4. TTL 4 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  5. TTL 5 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  6. TTL 6 Destination reply1.269 msMedian reply RTT15/17 replies · 88.2%ASN unavailable
  7. TTL 7 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
During

ICMP traceroute · Destination 3

Comparison window · median of 21 traces


to UTC

  1. TTL 1 Stealth associated hop0.130 msMedian reply RTT21/21 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.186 msMedian reply RTT21/21 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop3.207 msMedian reply RTT17/21 replies · 81.0%ASN unavailable
During

TCP/443 traceroute · Destination 4

Comparison window · median of 13 traces


to UTC

  1. TTL 1 Stealth associated hop0.190 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.189 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop6.186 msMedian reply RTT10/13 replies · 76.9%ASN unavailable
  4. TTL 4 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  5. TTL 5 Unidentified or changing hopUnavailableMedian reply RTTReply coverage unavailableASN unavailable
  6. TTL 6 Destination reply1.311 msMedian reply RTT10/13 replies · 76.9%ASN unavailable
  7. TTL 7 Destination reply1.986 msMedian reply RTT3/13 replies · 23.1%ASN unavailable
During

ICMP traceroute · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.157 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.185 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop27.915 msReply RTT ASN unavailable
  4. TTL 4 Probe hop20.047 msReply RTT AS13335 · Cloudflare
  5. TTL 5 Probe hop2.696 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.036 msReply RTT AS13335 · Cloudflare
During

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.194 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.190 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop19.550 msReply RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop2.613 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.683 msReply RTT AS13335 · Cloudflare
After

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.127 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.190 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop23.119 msReply RTT ASN unavailable
After

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.203 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.384 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop13.503 msReply RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop5.528 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.060 msReply RTT AS13335 · Cloudflare
After

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.128 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.187 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop12.459 msReply RTT ASN unavailable
After

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.415 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.177 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop1.841 msReply RTT ASN unavailable
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.435 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.320 msReply RTT AS13335 · Cloudflare
After

ICMP traceroute · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.137 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.183 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop31.082 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hop5.150 msReply RTT AS13335 · Cloudflare
  5. TTL 5 Probe hop1.323 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.006 msReply RTT AS13335 · Cloudflare
After

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.190 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.183 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop17.516 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hop16.852 msReply RTT AS13335 · Cloudflare
  5. TTL 5 Probe hop1.838 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.434 msReply RTT AS13335 · Cloudflare

RTT is the round trip to each responding hop, not the delay of the preceding link. TTL order may omit routers and does not prove direct links. A missing reply is not proof of packet loss. ASN labels are dated address associations; they do not establish the forwarding path or the operator at the event time. Up to three recorded traces per method and period are selected across the archive. Where no individual trace is available, a comparison may summarize a window; MTR observations aggregate multiple probes. Address aliases are independent across measurement types.

Same method / same recorded address

Compare the traces.

Compare one selected trace from before the event with one during it. Values are individual replies, not a statistical comparison.

ICMP traceroute · Recorded address 1

Before: UTC · During: UTC

Same destination address and probe method. A matching TTL does not establish the same forwarding path.
TTLBefore RTTDuring RTTResponding address
10.133 msAS8002 · Stealth0.136 msAS8002 · StealthSame responder
20.180 msAS8002 · Stealth0.180 msAS8002 · StealthSame responder
3Not recorded1.106 msNot established
TCP traceroute / 443 · Recorded address 1

Before: UTC · During: UTC

Same destination address and probe method. A matching TTL does not establish the same forwarding path.
TTLBefore RTTDuring RTTResponding address
10.142 msAS8002 · Stealth0.206 msAS8002 · StealthSame responder
20.176 msAS8002 · Stealth0.186 msAS8002 · StealthSame responder
3No reply15.617 msAS13335 · CloudflareNot established
4No replyNo replyNot established
51.698 msAS13335 · Cloudflare1.749 msAS13335 · CloudflareDifferent responders
61.512 msAS13335 · CloudflareNo replyNot established
7Not recorded2.039 msAS13335 · CloudflareNot established
TCP traceroute / 443 · Recorded address 2

Before: UTC · During: UTC

Same destination address and probe method. A matching TTL does not establish the same forwarding path.
TTLBefore RTTDuring RTTResponding address
10.196 msAS8002 · Stealth0.164 msAS8002 · StealthSame responder
20.280 msAS8002 · Stealth0.178 msAS8002 · StealthSame responder
33.716 ms0.806 msSame responder
4No replyNo replyNot established
52.268 msAS13335 · Cloudflare3.874 msAS13335 · CloudflareDifferent responders
61.396 msAS13335 · Cloudflare1.371 msAS13335 · CloudflareSame responder

RTTs include the return path. Different responders, missing replies and independent probe flows limit what a change can localize. MTR snapshots remain separate in the replay.

Event timeline.

Possible SLA event. Times shown are UTC.

Event opened
UTC
Last event observation
UTC
Recovery observed
UTC

Recorded recovery describes this event, not current reachability.

02 / Assessment

Assessment.

Investigation stateRecovered
Path assessment

Findings differ by destination.

Findings differ between destination comparisons. The evidence does not point to one location for the whole event.

What we observed

  • A sustained increase in measured round trip time was observed.
  • Stored traces were compared using matching source and destination addresses.

Recording counts describe collected measurements, not application availability or packet loss. Exact packet paths and the return path remain unverified.

Measurements at a glance.

Baseline RTT1.076 msUsual round trip before the event
Last recorded event RTT1.405 msLast successful event recording
Event p95 RTT17.869 ms95th percentile of successful recordings
Change from baseline+0.329 msLast event RTT compared with the baseline
Successful / expected recordings586 / 610Recorded endpoint samples during the event

RTT is round trip time; p95 describes the upper range of successful recordings. Endpoint measurements differ from individual trace replies and are not an uptime percentage.

Record sources and timestamps
Analysis updated
UTC
Public snapshot published
UTC
Public observation window
– UTC

Event and source timestamps are UTC. The latency chart uses its selected timezone. Page refresh times are separate from measurement timestamps.

03 / Method and limits

Method and limits.

How to interpret the sampled path and its limits

Corroborating the path.

Comparisons use matching destinations before and during the event. ICMP traces use echo probes. TCP/443 traces send SYN probes to port 443 only; they do not complete a TCP handshake or perform a TLS or HTTP exchange.

The Stealth gNMI interface verifies the active route-table choice and maps its primary next hop to the Stealth logical interface, configured attachment and, where applicable, the known LAG member set at each snapshot. Stable Stealth replies, together with mapped interface evidence showing no corresponding errors or sustained capacity pressure, reduce the likelihood of a Stealth forwarding issue. An 80% load warning warrants investigation; it does not prove congestion. Lower interval averages can conceal bursts or queue pressure. Optical readings assess the physical link, not congestion.

What remains unseen.

Probe reply handling can differ from packet forwarding. A slow intermediate reply that disappears at later hops does not locate a forwarding problem. A destination that does not respond to a trace is not thereby shown to be unavailable.

Stealth does not use ECMP in this monitored scope. The route snapshot does not identify which physical LAG member carried a particular independent probe, attest line-card forwarding at that packet instant, prove the exact application packet flow or observe the return path. RTT includes the return path, which may differ. No remote reverse traceroute is available. Tunnels and silent routers may hide parts of the path. Address registration alone does not establish the forwarding operator or responsibility.

References: ICMP reply handling / RFC 1812 · Round trip measurements / RFC 2681 · Full methodology