Source note · Unified CM Session Management Edition
In Unified CM 15, an ILS network supports up to 10 hub clusters with 20 spoke clusters per hub, up to 200 clusters in total.
Checked 2026-09-25
ILS networking supports up to 10 hub clusters with 20 spoke clusters per hub, up to a 200 total cluster maximum.
- Vendor
- Cisco
- Product
- Unified Communications Manager
- Subsystem
- dial plan replication
- Deployment
- on-premises
- Region
- not restricted
- Release range
- Unified CM 15 and SUs
- Checked
- 2026-09-25
Sources
- System Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs - Configure Intercluster Lookup Service — Cisco Systems · tier 2 current vendor documentation · Configure Intercluster Lookup Service, ILS Overview
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM Session Management Edition: source note cucm-session-management-edition-ils-limits. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-session-management-edition-ils-limits
BibTeX
@misc{warmtransfer-claim-cucm-session-management-edition-ils-limits,
title = {Unified CM Session Management Edition: source note cucm-session-management-edition-ils-limits},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-session-management-edition-ils-limits},
note = {Source note cucm-session-management-edition-ils-limits, checked 2026-09-25}
}