Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 9 – Cluster name and DNS SRV records
Cisco VCS Deployment Guide: Cluster creation and maintenance (Cisco VCS X7.0.n)
Page 57 of 63
The Cisco VCS Cluster name (configured on the VCS configuration > Clustering page) should be
the <fully.qualified.domain> specified in the DNS SRV records that point to the Cisco VCS cluster.
the <fully.qualified.domain> specified in the DNS SRV records that point to the Cisco VCS cluster.
Example: DNS SRV records for 2 peers of a VCS Expressway cluster for company.com
Where:
FQDN of VCS Expressway peer 1: vcse1.company.com
FQDN of VCS Expressway peer 2: vcse2.company.com
FQDN of VCS Expressway cluster: company.com
_sips._tcp.company.com. 86400 IN SRV 1 1 5061 vcse1.company.com.
_sips._tcp.company.com. 86400 IN SRV 1 1 5061 vcse2.company.com.
_sip._tcp.company.com. 86400 IN SRV 1 1 5060 vcse1.company.com.
_sip._tcp.company.com. 86400 IN SRV 1 1 5060 vcse2.company.com.
_h323ls._udp.company.com. 86400 IN SRV 1 1 1719 vcse1.company.com.
_h323ls._udp.company.com. 86400 IN SRV 1 1 1719 vcse2.company.com.
_h323cs._tcp.company.com. 86400 IN SRV 1 1 1720 vcse1.company.com.
_h323cs._tcp.company.com. 86400 IN SRV 1 1 1720 vcse2.company.com.
_h323rs._udp.company.com. 86400 IN SRV 1 1 1719 vcse1.company.com.
_h323rs._udp.company.com. 86400 IN SRV 1 1 1719 vcse2.company.com.
Note:
Priorities are all the same – only use different priorities if you have different clusters allowing
failover from one primary cluster to another (secondary) cluster
- in that case the primary cluster’s peers should have one value and the other (secondary)
cluster’s peers a (larger) value
failover from one primary cluster to another (secondary) cluster
- in that case the primary cluster’s peers should have one value and the other (secondary)
cluster’s peers a (larger) value
Weights should be the same – so that there is equal use of each peer
Endpoints supporting SIP DNS SRV
Movi versions prior to 4.0 supports:
_sip._tls.<fully.qualified.domain>
_sip._tcp.<fully.qualified.domain>
Movi version 4.0 and later supports:
_sips._tcp.<fully.qualified.domain>
_sip._tcp.<fully.qualified.domain>
E20 version TE2.1 and later supports:
_sips._tls.<fully.qualified.domain>
_sip._tcp.<fully.qualified.domain>
MXP version F8.2 and later supports:
_sip._tls.<fully.qualified.domain>