A cluster replication error can be raised because the NTP server is unreachable; the fix is to configure an accessible NTP server on System > Time.

Checked 2026-09-25

Vendor
Cisco
Product
Cisco Expressway
Subsystem
troubleshooting
Deployment
on-premises
Region
not restricted
Release range
X15.4
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Cisco Expressway clustering: source note expressway-clustering-ntp-unreachable-alarm. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-clustering-ntp-unreachable-alarm

BibTeX

@misc{warmtransfer-claim-expressway-clustering-ntp-unreachable-alarm,
  title  = {Cisco Expressway clustering: source note expressway-clustering-ntp-unreachable-alarm},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/expressway-clustering-ntp-unreachable-alarm},
  note   = {Source note expressway-clustering-ntp-unreachable-alarm, checked 2026-09-25}
}

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