Cisco's ILS networking capacities for Release 15 are up to 10 hub clusters per ILS network, up to 20 spoke clusters per hub, and at most 200 clusters in total.
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 Networking Capacities
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-capacity-limits. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-capacity-limits
BibTeX
@misc{warmtransfer-claim-cucm-ils-gdpr-setup-capacity-limits,
title = {Setting up ILS and Global Dial Plan Replication in Unified CM: source note cucm-ils-gdpr-setup-capacity-limits},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-ils-gdpr-setup-capacity-limits},
note = {Source note cucm-ils-gdpr-setup-capacity-limits, checked 2026-10-01}
}