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Root cause analysis / Investigation

copilot.com

Reference RCA-1AEA4E6ED32AFDBC

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

01 Nov 2026 23:30 – 02 Nov 2026 02:49 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
6.733 ms
6.732 ms
6.729 ms
6.742 ms
6.754 ms
6.735 ms
6.718 ms
6.732 ms
6.741 ms
6.750 ms
6.738 ms
6.719 ms
6.721 ms
6.740 ms
6.716 ms
6.926 ms
6.735 ms
6.743 ms
6.730 ms
6.735 ms
6.772 ms
6.749 ms
6.708 ms
6.716 ms
6.754 ms
6.714 ms
6.721 ms
6.717 ms
6.742 ms
6.773 ms
6.739 ms
6.725 ms
6.733 ms
6.747 ms
6.735 ms
6.775 ms
6.725 ms
6.725 ms
6.786 ms
6.791 ms
6.722 ms
6.734 ms
6.742 ms
6.716 ms
6.748 ms
6.731 ms
6.764 ms
6.758 ms
6.719 ms
6.709 ms
6.766 ms
6.767 ms
6.717 ms
6.697 ms
6.704 ms
6.736 ms
6.730 ms
6.731 ms
6.720 ms
6.727 ms
6.709 ms
6.712 ms
6.705 ms
6.736 ms
6.722 ms
6.698 ms
6.733 ms
6.719 ms
6.770 ms
6.696 ms
6.692 ms
6.709 ms
6.716 ms
6.694 ms
6.730 ms
6.733 ms
6.732 ms
6.714 ms
6.732 ms
6.716 ms
6.737 ms
6.750 ms
6.734 ms
6.762 ms
6.703 ms
6.715 ms
6.694 ms
6.703 ms
6.693 ms
6.731 ms
6.737 ms
6.743 ms
6.709 ms
6.729 ms
6.729 ms
6.753 ms
6.725 ms
6.785 ms
6.714 ms
6.720 ms
6.736 ms
6.731 ms
6.703 ms
6.685 ms
6.615 ms
6.635 ms
6.675 ms
6.622 ms
6.605 ms
6.608 ms
6.637 ms
6.740 ms
6.737 ms
6.708 ms
6.690 ms
6.722 ms
6.736 ms
6.753 ms
6.745 ms
6.708 ms
6.743 ms
6.720 ms
6.615 ms
22.867 ms
22.840 ms
22.840 ms
22.893 ms
22.839 ms
22.811 ms
22.788 ms
22.856 ms
22.790 ms
22.804 ms
22.824 ms
22.778 ms
22.826 ms
22.896 ms
22.877 ms
22.968 ms
22.826 ms
22.849 ms
22.817 ms
22.822 ms
22.861 ms
22.840 ms
22.807 ms
22.901 ms
22.826 ms
22.788 ms
22.855 ms
22.778 ms
22.812 ms
22.838 ms
22.823 ms
22.831 ms
22.789 ms
22.832 ms
22.861 ms
22.896 ms
22.784 ms
22.875 ms
22.819 ms
22.823 ms
22.857 ms
22.805 ms
22.868 ms
22.865 ms
22.863 ms
22.819 ms
22.866 ms
22.840 ms
22.833 ms
22.876 ms
22.842 ms
22.815 ms
22.819 ms
22.833 ms
22.829 ms
22.792 ms
22.876 ms
22.822 ms
22.826 ms
22.834 ms
22.834 ms
22.804 ms
22.834 ms
22.865 ms
22.855 ms
22.848 ms
23.003 ms
22.783 ms
22.832 ms
22.858 ms
22.880 ms
22.851 ms
22.816 ms
22.811 ms
22.818 ms
22.854 ms
22.861 ms
22.861 ms
22.868 ms
22.807 ms
22.837 ms
22.827 ms
22.774 ms
22.810 ms
22.871 ms
22.813 ms
22.868 ms
22.879 ms
22.824 ms
23.239 ms
22.781 ms
22.868 ms
22.892 ms
22.854 ms
22.810 ms
6.547 ms
6.549 ms
6.531 ms
6.525 ms
6.513 ms
6.508 ms
6.496 ms
6.669 ms
6.633 ms
6.681 ms
6.646 ms
6.514 ms
6.503 ms
6.578 ms
6.567 ms
6.539 ms
6.508 ms
6.528 ms
6.506 ms
6.508 ms
6.510 ms
6.510 ms
22.841 ms
22.864 ms
22.846 ms
22.789 ms
22.838 ms
22.911 ms
22.903 ms
23.090 ms
22.864 ms
22.846 ms
22.886 ms
22.852 ms
22.828 ms
22.820 ms
22.859 ms
22.846 ms
22.830 ms
22.867 ms
22.822 ms
22.814 ms
22.779 ms
22.813 ms
22.882 ms
22.820 ms
22.831 ms
22.840 ms
22.836 ms
22.861 ms
22.859 ms
22.902 ms
22.875 ms
22.845 ms
22.801 ms
22.944 ms
22.968 ms
22.395 ms
22.406 ms
22.413 ms
22.513 ms
22.453 ms
22.470 ms
22.890 ms
22.834 ms
22.863 ms
22.852 ms
22.843 ms
22.824 ms
22.843 ms
22.841 ms
22.871 ms
22.919 ms
22.892 ms
22.876 ms
22.826 ms
22.812 ms
22.798 ms
22.790 ms
22.914 ms
22.810 ms
22.853 ms
22.863 ms
22.854 ms
22.876 ms
22.855 ms
22.861 ms
22.845 ms
22.831 ms
22.965 ms
22.892 ms
22.859 ms
22.830 ms
22.854 ms
22.864 ms
22.985 ms
22.832 ms
22.851 ms
22.874 ms
22.854 ms
22.826 ms
22.825 ms
22.822 ms
22.843 ms
22.855 ms
22.854 ms
22.880 ms
22.784 ms
22.852 ms
22.854 ms
22.883 ms
22.805 ms
22.856 ms
22.815 ms
22.818 ms
22.853 ms
22.829 ms
22.844 ms
22.985 ms
22.805 ms
22.870 ms
22.828 ms
22.825 ms
22.875 ms
22.846 ms
22.802 ms
22.939 ms
22.824 ms
22.810 ms
22.832 ms
22.813 ms
22.816 ms
22.826 ms
22.830 ms
22.887 ms
22.855 ms
22.822 ms
22.848 ms
23.035 ms
22.836 ms
22.871 ms
Network path / recorded observations

Network path observations.

16 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 hop0.139 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop4.737 msReply RTT AS8075 · Microsoft
Before

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 hop0.842 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hop145.692 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hopNo replyNo comparable RTT ASN unavailable
  6. TTL 6 Probe hop8.684 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hopNo replyNo comparable RTT ASN unavailable
  8. TTL 8 Probe hopNo replyNo comparable RTT ASN unavailable
  9. TTL 9 Probe hopNo replyNo comparable RTT ASN unavailable
  10. TTL 10 Probe hopNo replyNo comparable RTT ASN unavailable
  11. TTL 11 Probe hopNo replyNo comparable RTT ASN unavailable
  12. TTL 12 Destination6.651 msReply RTT AS8075 · Microsoft
Before

ICMP traceroute · Recorded address 4

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.124 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.832 msReply RTT AS8075 · Microsoft
Before

TCP traceroute / 443 · Recorded address 4

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.140 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop1.002 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hop6.387 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop7.436 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hopNo replyNo comparable RTT ASN unavailable
  6. TTL 6 Probe hop8.708 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop6.730 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hopNo replyNo comparable RTT ASN unavailable
  9. TTL 9 Probe hopNo replyNo comparable RTT ASN unavailable
  10. TTL 10 Probe hopNo replyNo comparable RTT ASN unavailable
  11. TTL 11 Probe hopNo replyNo comparable RTT ASN unavailable
  12. TTL 12 Destination7.565 msReply RTT AS8075 · Microsoft
During

ICMP traceroute · Recorded address 4

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.192 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop67.209 msReply RTT AS8075 · Microsoft
During

TCP traceroute / 443 · Recorded address 4

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.193 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hopNo replyNo comparable RTT ASN unavailable
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hop7.054 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop7.704 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop8.601 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop8.351 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hopNo replyNo comparable RTT ASN unavailable
  9. TTL 9 Probe hopNo replyNo comparable RTT ASN unavailable
  10. TTL 10 Probe hopNo replyNo comparable RTT ASN unavailable
  11. TTL 11 Probe hopNo replyNo comparable RTT ASN unavailable
  12. TTL 12 Destination6.890 msReply RTT AS8075 · Microsoft
During

ICMP traceroute · Recorded address 3

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.132 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.921 msReply RTT ASN unavailable
  3. TTL 3 Probe hop1.344 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop23.609 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop24.937 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop24.986 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop24.097 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hop24.019 msReply RTT AS8075 · Microsoft
  9. TTL 9 Probe hop23.729 msReply RTT AS8075 · Microsoft
  10. TTL 10 Probe hop20.123 msReply RTT AS8075 · Microsoft
  11. TTL 11 Probe hop23.040 msReply RTT AS8075 · Microsoft
During

TCP traceroute / 443 · Recorded address 3

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.185 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop17.881 msReply RTT ASN unavailable
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hop191.069 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop23.333 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop24.497 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop24.075 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hopNo replyNo comparable RTT ASN unavailable
  9. TTL 9 Probe hop23.750 msReply RTT AS8075 · Microsoft
  10. TTL 10 Probe hop20.214 msReply RTT AS8075 · Microsoft
  11. TTL 11 Probe hop24.325 msReply RTT AS8075 · Microsoft
  12. TTL 12 Probe hopNo replyNo comparable RTT ASN unavailable
  13. TTL 13 Destination22.861 msReply RTT AS8075 · Microsoft
During

ICMP traceroute · Recorded address 2

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.146 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop3.786 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hop0.916 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop7.164 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop7.242 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop7.983 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop6.865 msReply RTT AS8075 · Microsoft
During

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.147 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop1.300 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hop7.163 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop6.930 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop6.928 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hopNo replyNo comparable RTT ASN unavailable
  8. TTL 8 Probe hopNo replyNo comparable RTT ASN unavailable
  9. TTL 9 Probe hopNo replyNo comparable RTT ASN unavailable
  10. TTL 10 Probe hopNo replyNo comparable RTT ASN unavailable
  11. TTL 11 Probe hopNo replyNo comparable RTT ASN unavailable
  12. TTL 12 Destination6.673 msReply RTT AS8075 · Microsoft
After

ICMP traceroute · Recorded address 3

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.162 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.945 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hop1.469 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop24.033 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop23.481 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop24.654 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop23.532 msReply RTT AS8075 · Microsoft
After

TCP traceroute / 443 · Recorded address 3

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.169 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.866 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hopNo replyNo comparable RTT ASN unavailable
  4. TTL 4 Probe hop161.601 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop23.409 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop25.120 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop23.542 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hop23.994 msReply RTT AS8075 · Microsoft
  9. TTL 9 Probe hop23.777 msReply RTT AS8075 · Microsoft
  10. TTL 10 Probe hop68.758 msReply RTT AS8075 · Microsoft
  11. TTL 11 Probe hop22.827 msReply RTT AS8075 · Microsoft
  12. TTL 12 Probe hopNo replyNo comparable RTT ASN unavailable
  13. TTL 13 Destination23.099 msReply RTT AS8075 · Microsoft
After

ICMP traceroute · Recorded address 3

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.134 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop22.672 msReply RTT ASN unavailable
  3. TTL 3 Probe hop1.283 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop23.523 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop151.153 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop24.357 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop23.833 msReply RTT AS8075 · Microsoft
After

TCP traceroute / 443 · Recorded address 3

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.143 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.947 msReply RTT ASN unavailable
  3. TTL 3 Probe hop1.496 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop23.766 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop23.429 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop23.535 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop23.397 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hop25.056 msReply RTT AS8075 · Microsoft
  9. TTL 9 Probe hop23.822 msReply RTT AS8075 · Microsoft
  10. TTL 10 Probe hop20.080 msReply RTT AS8075 · Microsoft
  11. TTL 11 Probe hop30.484 msReply RTT AS8075 · Microsoft
  12. TTL 12 Probe hopNo replyNo comparable RTT ASN unavailable
  13. TTL 13 Destination23.177 msReply RTT AS8075 · Microsoft
After

ICMP traceroute · Recorded address 3

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.127 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop65.477 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hop1.934 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop23.645 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop24.538 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop24.831 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop24.211 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hop24.820 msReply RTT AS8075 · Microsoft
  9. TTL 9 Probe hop23.826 msReply RTT AS8075 · Microsoft
  10. TTL 10 Probe hop19.963 msReply RTT AS8075 · Microsoft
  11. TTL 11 Probe hop23.188 msReply RTT AS8075 · Microsoft
After

TCP traceroute / 443 · Recorded address 3

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.176 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop8.244 msReply RTT AS8075 · Microsoft
  3. TTL 3 Probe hop1.734 msReply RTT AS8075 · Microsoft
  4. TTL 4 Probe hop23.449 msReply RTT AS8075 · Microsoft
  5. TTL 5 Probe hop23.400 msReply RTT AS8075 · Microsoft
  6. TTL 6 Probe hop23.741 msReply RTT AS8075 · Microsoft
  7. TTL 7 Probe hop24.502 msReply RTT AS8075 · Microsoft
  8. TTL 8 Probe hop23.083 msReply RTT AS8075 · Microsoft
  9. TTL 9 Probe hop23.913 msReply RTT AS8075 · Microsoft
  10. TTL 10 Probe hop19.942 msReply RTT AS8075 · Microsoft
  11. TTL 11 Probe hop22.856 msReply RTT AS8075 · Microsoft
  12. TTL 12 Probe hopNo replyNo comparable RTT ASN unavailable
  13. TTL 13 Destination22.869 msReply RTT AS8075 · Microsoft

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 4

Before: UTC · During: UTC

Same destination address and probe method. A matching TTL does not establish the same forwarding path.
TTLBefore RTTDuring RTTResponding address
10.124 msAS8002 · Stealth0.192 msAS8002 · StealthSame responder
20.832 msAS8075 · Microsoft67.209 msAS8075 · MicrosoftSame responder
TCP traceroute / 443 · Recorded address 4

Before: UTC · During: UTC

Same destination address and probe method. A matching TTL does not establish the same forwarding path.
TTLBefore RTTDuring RTTResponding address
10.140 msAS8002 · Stealth0.193 msAS8002 · StealthSame responder
21.002 msAS8075 · MicrosoftNo replyNot established
36.387 msAS8075 · MicrosoftNo replyNot established
47.436 msAS8075 · Microsoft7.054 msAS8075 · MicrosoftDifferent responders
5No reply7.704 msAS8075 · MicrosoftNot established
68.708 msAS8075 · Microsoft8.601 msAS8075 · MicrosoftDifferent responders
76.730 msAS8075 · Microsoft8.351 msAS8075 · MicrosoftDifferent responders
8No replyNo replyNot established
9No replyNo replyNot established
10No replyNo replyNot established
11No replyNo replyNot established
127.565 msAS8075 · Microsoft6.890 msAS8075 · MicrosoftSame 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

Elevated latency observed.

Endpoint round-trip time was elevated during part of the event. The available path observations do not identify where the increase occurred.

What we observed

  • A sustained increase in measured round trip time was observed.
  • The measured destination address changed across the comparison period.

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 RTT6.517 msUsual round trip before the event
Last recorded event RTT6.510 msLast successful event recording
Event p95 RTT22.896 ms95th percentile of successful recordings
Change from baseline-0.008 msLast event RTT compared with the baseline
Successful / expected recordings160 / 160Recorded 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