After ILS runs on a hub, a new cluster joins by enabling ILS and pointing to an existing hub; ILS then connects the clusters and tells both of them the wider network topology.
Checked 2026-10-01
- Vendor
- Cisco
- Product
- Cisco Unified Communications Manager
- Subsystem
- Intercluster Lookup Service
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Release 15 and SUs
- Checked
- 2026-10-01
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Configure Intercluster Lookup Service — Cisco Systems · tier 2 current vendor documentation · ILS Overview
Cite this note
APA
WarmTransfer. (2026, October 1). Setting up ILS and Global Dial Plan Replication in Unified CM: source note cucm-ils-gdpr-setup-join-via-existing-hub. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-join-via-existing-hub
BibTeX
@misc{warmtransfer-claim-cucm-ils-gdpr-setup-join-via-existing-hub,
title = {Setting up ILS and Global Dial Plan Replication in Unified CM: source note cucm-ils-gdpr-setup-join-via-existing-hub},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-join-via-existing-hub},
note = {Source note cucm-ils-gdpr-setup-join-via-existing-hub, checked 2026-10-01}
}