Configure and Troubleshoot Joining Clusters for ILS

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/200694-Configure-and-Troubleshoot-Joining-Clust.html

Published

2016-09-28

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• ILS peering and intercluster SIP TLS trunks depend on different certificate families (Tomcat for ILS, CallManager for the SIP trunk), so fixing one trust store does not fix the other. inferred in context
• A spoke that has not imported the hub's Tomcat certificate reports Certificate verification failed (Verification error:18) when it tries to join ILS. in context
• When ILS password authentication fails, the tech note shows DecryptData failed errors and an ILSPwdAuthenticationFailed alarm; the fix is to configure the same password on hub and spoke. in context
• An ILS join that fails with a self-signed certificate verification error is fixed by importing the remote cluster's Tomcat certificate into the tomcat-trust store, or by using TLS with CA-signed certificates. in context
• A hub that lacks a spoke's Tomcat certificate logs that the certificate is not in the local store and the FQDN is not in the peer info vector. in context
• The ILS joining tech note gives TCP port 7501 for TLS-authenticated ILS and 7502 for password-authenticated ILS. in context
• For ILS troubleshooting, the tech note sets the Cisco Intercluster Lookup Service trace to detailed and collects from activelog /cm/trace/ils/sdl/. in context

Cite this source record

APA

WarmTransfer. (2016, September 28). Configure and Troubleshoot Joining Clusters for ILS. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-technote-200694-ils-joining-clusters

BibTeX

@misc{warmtransfer-cisco-technote-200694-ils-joining-clusters,
  title  = {Configure and Troubleshoot Joining Clusters for ILS},
  author = {{WarmTransfer}},
  year   = {2016},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-technote-200694-ils-joining-clusters},
  note   = {Cisco Systems, accessed 2026-09-25}
}