Source note · Troubleshooting Expressway Mobile and Remote Access
Before X15.4 Expressway-C validates both Server and Client Authentication EKUs on the certificate Expressway-E presents for the MRA SIP SERVICE exchange, so a server-only EKU certificate on Expressway-E shows up as failed SIP registration.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- certificates
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X14 through X15.3.2
- Checked
- 2026-10-01
Sources
- Prepare Expressway for Client Authentication EKU Sunset in Public CA Certificates — Cisco Systems · tier 2 current vendor documentation · How MRA; Traversal Zones; B2B and Clustering Are Impacted > MRA
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-eku-mra-sip-symptom. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-eku-mra-sip-symptom
BibTeX
@misc{warmtransfer-claim-expressway-mra-troubleshooting-eku-mra-sip-symptom,
title = {Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-eku-mra-sip-symptom},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-eku-mra-sip-symptom},
note = {Source note expressway-mra-troubleshooting-eku-mra-sip-symptom, checked 2026-10-01}
}