Changing a phone security profile's Authentication Mode requires Save and Apply Config, which can restart every phone that uses that profile.

Checked 2026-10-02

This can cause those devices using the specific Phone Security Profile to restart.
Vendor
Cisco
Product
Cisco Unified CM
Subsystem
phone security profile
Deployment
on-premises
Region
not restricted
Release range
8.0(1) and later
Checked
2026-10-02

Sources

Cite this note

APA

WarmTransfer. (2026, October 2). Setting up 802.1X authentication for Cisco IP phones: source note cisco-phone-8021x-setup-profile-change-restart. WarmTransfer. https://warmtransfer.net/knowledge/claims/cisco-phone-8021x-setup-profile-change-restart

BibTeX

@misc{warmtransfer-claim-cisco-phone-8021x-setup-profile-change-restart,
  title  = {Setting up 802.1X authentication for Cisco IP phones: source note cisco-phone-8021x-setup-profile-change-restart},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cisco-phone-8021x-setup-profile-change-restart},
  note   = {Source note cisco-phone-8021x-setup-profile-change-restart, checked 2026-10-02}
}

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