Source note · Troubleshooting Expressway Mobile and Remote Access
An underscore in the Expressway-E DNS host name stops the MRA SSH tunnels from establishing and Jabber sign-in fails; the System host name may contain only letters, digits and hyphens.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Cisco Expressway
- Subsystem
- ssh-tunnels
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X15.2 documentation
- Checked
- 2026-10-01
Sources
- Mobile and Remote Access Through Cisco Expressway Deployment Guide (X15.2) - MRA Troubleshooting — Cisco Systems · tier 2 current vendor documentation · Cisco Jabber Sign-In Issues > Jabber fails to sign in due to SSH tunnels failure
Cite this note
APA
WarmTransfer. (2026, October 1). Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-underscore-hostname-ssh. WarmTransfer. https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-underscore-hostname-ssh
BibTeX
@misc{warmtransfer-claim-expressway-mra-troubleshooting-underscore-hostname-ssh,
title = {Troubleshooting Expressway Mobile and Remote Access: source note expressway-mra-troubleshooting-underscore-hostname-ssh},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/expressway-mra-troubleshooting-underscore-hostname-ssh},
note = {Source note expressway-mra-troubleshooting-underscore-hostname-ssh, checked 2026-10-01}
}