Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 3 – IP port and protocol numbers
Cisco VCS Deployment Guide: Cluster creation and maintenance (Cisco VCS X7.0.n)
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Appendix 3 – IP port and protocol numbers
It is unusual to have any sort of firewall between cluster peers, but if there is, the following lists
document the IP protocols and ports that must be open between each and every Cisco VCS peer in
the cluster.
document the IP protocols and ports that must be open between each and every Cisco VCS peer in
the cluster.
For cluster communications between Cisco VCS peers:
UDP port 500 (ISAKMP) for PKI (Public Key Infrastructure) key exchange
Standard SIP and H.323 ports are used for calls
UDP port 1719 is used for bandwidth updates between Cisco VCS peers
IP protocol 51 (IPSec AH) is used for database synchronization
For cluster communications between Cisco VCS peers and a Cisco TMS:
TCP port 389 (LDAP) is used for directory lookup services
TCP port 636 is reserved, currently not used
TCP port 8989 is used for FindMe and provisioning data synchronization replication
TCP port 4444 is used for FindMe and provisioning data synchronization administration from
Cisco TMS to Cisco VCS
Cisco TMS to Cisco VCS