Cisco recommends forming the cluster with IP addresses in Permissive mode, then changing peer addresses to FQDNs, and then switching TLS verification mode to Enforce.

Checked 2026-09-25

Vendor
Cisco
Product
Cisco Expressway
Subsystem
cluster security
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-form-ip-then-enforce. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-clustering-form-ip-then-enforce

BibTeX

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

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