An ILS design in which every cluster is a hub cannot exceed 10 clusters, because an ILS network supports at most 10 hub clusters; larger networks need spokes.
inferred · 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
- Status
- inferred
- 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 Networking Capacities (derived)
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-hubs-only-ten-max. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-hubs-only-ten-max
BibTeX
@misc{warmtransfer-claim-cucm-ils-gdpr-setup-hubs-only-ten-max,
title = {Setting up ILS and Global Dial Plan Replication in Unified CM: source note cucm-ils-gdpr-setup-hubs-only-ten-max},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-hubs-only-ten-max},
note = {Source note cucm-ils-gdpr-setup-hubs-only-ten-max, checked 2026-10-01}
}