RFC 4594 recommends that markings on packet flows from untrusted sources such as end-user devices SHOULD be verified at ingress, with policing optional for trusted sources.
Checked 2026-10-02
Packet flow marking from untrusted sources (end user devices) SHOULD be verified at ingress
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- DiffServ service classes
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 4594
- Checked
- 2026-10-02
Sources
- RFC 4594: Configuration Guidelines for DiffServ Service Classes — IETF / RFC Editor · tier 1 standards and regulators · Sections 4.1, 4.2 and 4.3 (conditioning text)
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting voice QoS markings that are stripped or ignored: source note voice-qos-troubleshooting-rfc4594-untrusted-verify. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-qos-troubleshooting-rfc4594-untrusted-verify
BibTeX
@misc{warmtransfer-claim-voice-qos-troubleshooting-rfc4594-untrusted-verify,
title = {Troubleshooting voice QoS markings that are stripped or ignored: source note voice-qos-troubleshooting-rfc4594-untrusted-verify},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-qos-troubleshooting-rfc4594-untrusted-verify},
note = {Source note voice-qos-troubleshooting-rfc4594-untrusted-verify, checked 2026-10-02}
}