Root cause analysis / Investigation

copilot.microsoft.com

Reference RCA-D314E06154039AEA

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.

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

06 Nov 2026 18:35 – 06 Nov 2026 21:14 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.
Recorded at (UTC)RTT
15.950 ms
1.405 ms
3.092 ms
0.990 ms
0.975 ms
1.384 ms
0.939 ms
1.079 ms
0.992 ms
0.978 ms
0.977 ms
1.415 ms
19.946 ms
0.946 ms
0.932 ms
0.958 ms
0.970 ms
1.165 ms
0.983 ms
1.434 ms
13.859 ms
13.948 ms
19.235 ms
0.999 ms
1.000 ms
1.414 ms
17.816 ms
8.442 ms
9.159 ms
10.173 ms
0.987 ms
1.005 ms
2.084 ms
21.354 ms
1.044 ms
1.387 ms
0.976 ms
1.431 ms
15.605 ms
1.425 ms
1.497 ms
14.835 ms
1.067 ms
0.950 ms
1.366 ms
1.413 ms
1.359 ms
0.982 ms
1.558 ms
7.029 ms
6.109 ms
1.443 ms
1.511 ms
0.966 ms
1.037 ms
15.184 ms
1.088 ms
2.666 ms
1.406 ms
1.834 ms
1.413 ms
1.112 ms
8.830 ms
2.265 ms
2.194 ms
0.988 ms
9.216 ms
1.384 ms
0.988 ms
1.439 ms
1.014 ms
9.121 ms
1.015 ms
1.054 ms
1.419 ms
0.953 ms
0.944 ms
10.469 ms
0.999 ms
0.954 ms
1.391 ms
1.160 ms
1.050 ms
1.028 ms
1.038 ms
16.965 ms
20.246 ms
1.007 ms
1.004 ms
1.120 ms
0.962 ms
1.028 ms
1.430 ms
1.387 ms
0.967 ms
1.415 ms
1.027 ms
1.366 ms
1.463 ms
1.432 ms
0.998 ms
1.364 ms
1.032 ms
1.018 ms
1.386 ms
1.382 ms
1.052 ms
1.024 ms
1.122 ms
1.022 ms
1.081 ms
0.986 ms
1.366 ms
1.427 ms
0.935 ms
1.400 ms
1.434 ms
1.374 ms
0.976 ms
1.558 ms
1.007 ms
1.405 ms
1.085 ms
1.405 ms
1.419 ms
1.378 ms
1.380 ms
7.406 ms
1.367 ms
1.409 ms
4.376 ms
1.425 ms
1.029 ms
1.004 ms
14.567 ms
1.364 ms
1.457 ms
0.963 ms
5.491 ms
0.954 ms
1.048 ms
2.410 ms
18.396 ms
1.018 ms
1.364 ms
1.380 ms
0.976 ms
0.983 ms
14.318 ms
1.531 ms
1.020 ms
1.422 ms
0.938 ms
1.380 ms
0.963 ms
1.381 ms
1.444 ms
1.713 ms
0.972 ms
1.399 ms
1.357 ms
1.432 ms
1.387 ms
1.063 ms
2.349 ms
1.369 ms
8.630 ms
1.090 ms
1.351 ms
1.005 ms
1.022 ms
1.468 ms
0.989 ms
0.980 ms
1.000 ms
1.368 ms
1.476 ms
1.389 ms
1.352 ms
0.987 ms
1.393 ms
1.444 ms
0.988 ms
1.071 ms
1.312 ms
1.030 ms
1.077 ms
1.399 ms
4.127 ms
1.009 ms
1.477 ms
0.960 ms
1.040 ms
1.158 ms
1.395 ms
0.977 ms
1.053 ms
1.359 ms
1.379 ms
1.536 ms
1.389 ms
1.362 ms
1.362 ms
1.036 ms
1.413 ms
1.386 ms
1.365 ms
1.368 ms
1.354 ms
1.427 ms
0.996 ms
1.502 ms
1.374 ms
1.052 ms
0.966 ms
1.007 ms
14.730 ms
1.478 ms
1.017 ms
1.422 ms
1.023 ms
1.000 ms
0.977 ms
1.392 ms
1.102 ms
1.404 ms
1.027 ms
0.987 ms
0.961 ms
1.411 ms
1.355 ms
1.006 ms
1.548 ms
1.029 ms
0.964 ms
1.008 ms
1.044 ms
1.410 ms
9.508 ms
0.964 ms
1.078 ms
1.463 ms
0.976 ms
0.999 ms
1.046 ms
1.387 ms
1.361 ms
1.414 ms
1.407 ms
1.374 ms
1.029 ms
1.003 ms
2.836 ms
3.535 ms
20.032 ms
1.012 ms
20.466 ms
1.004 ms
1.125 ms
0.985 ms
1.423 ms
0.994 ms
1.029 ms
1.069 ms
1.117 ms
1.419 ms
13.680 ms
1.103 ms
0.999 ms
1.382 ms
1.055 ms
1.424 ms
0.976 ms
0.960 ms
1.026 ms
1.376 ms
1.095 ms
0.999 ms
1.424 ms
1.414 ms
1.382 ms
0.992 ms
1.018 ms
1.008 ms
1.353 ms
0.992 ms
1.003 ms
0.999 ms
1.036 ms
1.422 ms
1.393 ms
1.374 ms
0.976 ms
1.399 ms
1.048 ms
1.044 ms
1.022 ms
1.055 ms
1.229 ms
0.957 ms
1.461 ms
1.338 ms
1.372 ms
1.490 ms
14.306 ms
1.029 ms
1.004 ms
1.374 ms
17.100 ms
1.009 ms
2.377 ms
1.382 ms
1.378 ms
1.046 ms
3.337 ms
1.232 ms
1.030 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 2

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.127 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.178 msReply RTT AS8002 · Stealth
Before

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 hop0.193 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 hop4.385 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Probe hopNo replyNo comparable RTT ASN unavailable
  7. TTL 7 Destination1.227 msReply RTT AS13335 · Cloudflare
Before

ICMP traceroute · Destination 1

Comparison window · median of 17 traces


to UTC

  1. TTL 1 Stealth associated hop0.129 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.185 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop2.332 msMedian reply RTT11/17 replies · 64.7%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 13 traces


to UTC

  1. TTL 1 Stealth associated hop0.173 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.201 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop5.160 msMedian reply RTT12/13 replies · 92.3%AS13335 · Cloudflare
  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 reply1.381 msMedian reply RTT6/13 replies · 46.2%ASN unavailable
  7. TTL 7 Destination reply1.844 msMedian reply RTT7/13 replies · 53.8%ASN unavailable
Before

ICMP traceroute · Destination 3

Comparison window · median of 13 traces


to UTC

  1. TTL 1 Stealth associated hop0.136 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.184 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop10.175 msMedian reply RTT12/13 replies · 92.3%AS13335 · Cloudflare
  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 4

Comparison window · median of 17 traces


to UTC

  1. TTL 1 Stealth associated hop0.168 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.189 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop13.692 msMedian reply RTT14/17 replies · 82.4%AS13335 · Cloudflare
  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 reply1.429 msMedian reply RTT14/17 replies · 82.4%ASN unavailable
  7. TTL 7 Destination reply2.130 msMedian reply RTT3/17 replies · 17.6%ASN unavailable
Before

ICMP traceroute · Recorded address 2

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.140 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.188 msReply RTT AS8002 · Stealth
Before

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.166 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.181 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 hop3.494 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination18.239 msReply RTT AS13335 · Cloudflare
Before

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.143 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.897 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop12.617 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop2.278 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.254 msReply RTT AS13335 · Cloudflare
During

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.125 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.192 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop17.317 msReply RTT AS13335 · Cloudflare
During

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.169 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.181 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop31.112 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.601 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Probe hopNo replyNo comparable RTT ASN unavailable
  7. TTL 7 Destination1.839 msReply RTT AS13335 · Cloudflare
During

ICMP traceroute · Destination 1

Comparison window · median of 13 traces


to UTC

  1. TTL 1 Stealth associated hop0.134 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.184 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop1.352 msMedian reply RTT12/13 replies · 92.3%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 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 hop0.159 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.185 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop5.281 msMedian reply RTT14/17 replies · 82.4%AS13335 · Cloudflare
  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 reply1.248 msMedian reply RTT13/17 replies · 76.5%ASN unavailable
  7. TTL 7 Destination reply1.594 msMedian reply RTT4/17 replies · 23.5%ASN unavailable
During

ICMP traceroute · Destination 3

Comparison window · median of 17 traces


to UTC

  1. TTL 1 Stealth associated hop0.135 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.184 msMedian reply RTT17/17 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop3.067 msMedian reply RTT16/17 replies · 94.1%AS13335 · Cloudflare
  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 4

Comparison window · median of 13 traces


to UTC

  1. TTL 1 Stealth associated hop0.184 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  2. TTL 2 Stealth associated hop0.188 msMedian reply RTT13/13 replies · 100.0%ASN unavailable
  3. TTL 3 First responding external hop1.711 msMedian reply RTT12/13 replies · 92.3%AS13335 · Cloudflare
  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 reply1.377 msMedian reply RTT9/13 replies · 69.2%ASN unavailable
  7. TTL 7 Destination reply2.007 msMedian reply RTT4/13 replies · 30.8%ASN unavailable
During

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.138 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.186 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop0.951 msReply RTT AS13335 · Cloudflare
During

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.170 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.177 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop17.038 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.881 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.037 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 hop0.178 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop1.395 msReply RTT AS13335 · Cloudflare
During

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.224 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.180 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop1.275 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.702 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Probe hopNo replyNo comparable RTT ASN unavailable
  7. TTL 7 Destination1.759 msReply RTT AS13335 · Cloudflare
After

ICMP traceroute · Recorded address 2

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.142 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.183 msReply RTT AS8002 · Stealth
After

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.132 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.180 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 hop1.397 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Probe hopNo replyNo comparable RTT ASN unavailable
  7. TTL 7 Destination1.222 msReply RTT AS13335 · Cloudflare
After

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.129 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.177 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop14.210 msReply RTT AS13335 · Cloudflare
After

TCP traceroute / 443 · Recorded address 1

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.166 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.171 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop10.129 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.400 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Probe hopNo replyNo comparable RTT ASN unavailable
  7. TTL 7 Destination1.427 msReply RTT AS13335 · Cloudflare
After

ICMP traceroute · Recorded address 1

Recorded trace · destination not reached by this trace


to UTC

  1. TTL 1 Probe hop0.119 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.253 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop1.270 msReply RTT AS13335 · Cloudflare
After

TCP traceroute / 443 · Recorded address 2

Recorded trace · destination replied


to UTC

  1. TTL 1 Probe hop0.168 msReply RTT AS8002 · Stealth
  2. TTL 2 Probe hop0.191 msReply RTT AS8002 · Stealth
  3. TTL 3 Probe hop1.799 msReply RTT AS13335 · Cloudflare
  4. TTL 4 Probe hopNo replyNo comparable RTT ASN unavailable
  5. TTL 5 Probe hop1.072 msReply RTT AS13335 · Cloudflare
  6. TTL 6 Destination1.441 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.

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
10.143 msAS8002 · Stealth0.169 msAS8002 · StealthSame responder
20.897 msAS8002 · Stealth0.181 msAS8002 · StealthSame responder
312.617 msAS13335 · Cloudflare31.112 msAS13335 · CloudflareSame responder
4No replyNo replyNot established
52.278 msAS13335 · Cloudflare1.601 msAS13335 · CloudflareDifferent responders
61.254 msAS13335 · CloudflareNo replyNot established
7Not recorded1.839 msAS13335 · CloudflareNot established

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.

Latency anomaly. 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

Stealth replies stable; external replies varied.

Sampled Stealth associated replies stayed within the comparison limits while external replies varied. The external path, destination and return path remain areas to investigate.

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 RTT1.165 msUsual round trip before the event
Last recorded event RTT1.359 msLast successful event recording
Event p95 RTT7.467 ms95th percentile of successful recordings
Change from baseline+0.194 msLast event RTT compared with the baseline
Successful / expected recordings80 / 80Recorded 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