Bug ID 2304825: Remotely authenticated users don't have any serial console fallback if the remote server fails

Last Modified: Jun 29, 2026

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
16.1.6.1, 17.1.3.2, 17.5.1.6, 21.0.0, 21.0.0.1

Opened: May 28, 2026

Severity: 4-Minor

Symptoms

When using a remote authentication server like Radius, Tacacs, or LDAP, the users can log in to the console/virtual console using authentication from that server. If the server, or communication with this server, fails, the users have no fallback to local authentication This fallback only works with sshd or httpd

Impact

Remotely authenticated users accessing the device via the console don't have any fallback mechanism if the remote authentication server is not reachable

Conditions

- Remote authentication server configured and in use - Remote authentication server not reachable - Console access needed

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips