Cisco Expressway Cluster Creation and Maintenance Deployment Guide (X15.4) - Clustering Basics

Publisher

Cisco Systems

URL

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X15-4/cluster_creation_maint/exwy_b_cisco-expressway-cluster-creation-and-maintenance-deployment-guide-x154/exwy_m_clustering-basics.html

Published

2026-02-09

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco copyrighted documentation; no-redistribution; short excerpts and locators only

Source notes citing this source

• The X15.4 cluster deployment guide states clustering can increase Expressway capacity by a maximum factor of four compared with a single Expressway and that there is no capacity gain after four peers. in context
• Expressway capacity licensing is per cluster: capacity licenses installed on any peer, including Rich Media Session and room/desktop system registration licenses, are available to every peer. in context
• An Expressway cluster can contain up to six Expressway peers. in context
• One cluster peer is nominated as the primary, and its configuration is replicated to the other peers. in context
• Every peer in an Expressway cluster must have the same routing capabilities, because the cluster assumes any peer can route to any destination another peer can reach. in context
• Clustering Small VM Expressways provides redundancy only and gives no additional capacity. in context

Cite this source record

APA

WarmTransfer. (2026, February 9). Cisco Expressway Cluster Creation and Maintenance Deployment Guide (X15.4) - Clustering Basics. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-exwy-cluster-x154-basics

BibTeX

@misc{warmtransfer-cisco-exwy-cluster-x154-basics,
  title  = {Cisco Expressway Cluster Creation and Maintenance Deployment Guide (X15.4) - Clustering Basics},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-exwy-cluster-x154-basics},
  note   = {Cisco Systems, accessed 2026-09-25}
}