300-810 · Question #199
Users on Cisco.com experience issues while using Cisco Jabber, and the error 'Cannot communicate with the server" appears. An engineer checks the logs for the Jabber client and discovers the error "LE
The correct answer is C. if the cup-xmpp certificates are valid and if port 5222 is open. The error LERR_JABBER_AUTH with a SASL (Simple Authentication and Security Layer) failure indicates that the XMPP authentication handshake between Jabber and the IM&P server is failing. XMPP connections use port 5222 (unencrypted/STARTTLS) or 5223 (TLS). The cup-xmpp certificate
Question
Users on Cisco.com experience issues while using Cisco Jabber, and the error 'Cannot communicate with the server" appears. An engineer checks the logs for the Jabber client and discovers the error "LERR_JABBER_AUTH <17>: Authentication error with server e.g. resource bind, TLS, create a session or SASL error. What should be checked to resolve this issue?
Options
- Aif the LDAP server Is reachable and if port 443 Is open
- Bif cup-xmpp certificates are valid and if port 8443 is open
- Cif the cup-xmpp certificates are valid and if port 5222 is open
- Dif the LDAP server Is reachable and If port 5222 Is open
How the community answered
(45 responses)- A4% (2)
- B16% (7)
- C71% (32)
- D9% (4)
Explanation
The error LERR_JABBER_AUTH with a SASL (Simple Authentication and Security Layer) failure indicates that the XMPP authentication handshake between Jabber and the IM&P server is failing. XMPP connections use port 5222 (unencrypted/STARTTLS) or 5223 (TLS). The cup-xmpp certificate on the IM&P server secures this XMPP connection, and if it is invalid, expired, or untrusted, the TLS/SASL negotiation fails and Jabber cannot authenticate. Verifying that cup-xmpp certificates are valid and that port 5222 is open addresses both the encryption layer and the network path. Port 8443 (B) is for HTTPS/tomcat, and LDAP (A, D) is unrelated to this specific SASL error.
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