Cisco Cisco TelePresence Video Communication Server Expressway
Appendix 5 – Connecting Cisco VCS to a cluster of CUCM nodes
Cisco VCS Deployment Guide: CUCM v6.1, 7 and 8 with Cisco VCS X7.1 using a SIP trunk
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Peer 3 address
IP address or the domain of CUCM node 3, or blank if no CUCM node 3.
Peer 4 address
IP address or the domain of CUCM node 3, or blank if no CUCM node 4.
Peer 5 address
IP address or the domain of CUCM node 3, or blank if no CUCM node 5.
Peer 6 address
IP address or the domain of CUCM node 3, or blank if no CUCM node 6.
Option 2: Using a DNS zone
CUCM configuration
When in a cluster, CUCM needs to accept calls routed to number@domain (instead of
number@<ip address of CUCM>) so that Cisco VCS can send the call to any CUCM node without
having to make sure that the domain portion matches the IP address of the node that the call is being
sent to.
number@<ip address of CUCM>) so that Cisco VCS can send the call to any CUCM node without
having to make sure that the domain portion matches the IP address of the node that the call is being
sent to.
1. Go to
System > Enterprise parameters
, and find the Clusterwide Domain Configuration
section.
2. Set the Cluster Fully Qualified Domain Name to the same domain as the video network, for
example vcs.domain.
This parameter defines one or more Fully Qualified Domain Names (FQDNs) for this cluster.
Multiple FQDNs must be separated by a space. Requests containing URLs (for example, SIP
calls) whose host portion matches any of the FQDNs in this parameter will be recognized as a
request destined for this cluster and/or devices attached to it.
This parameter defines one or more Fully Qualified Domain Names (FQDNs) for this cluster.
Multiple FQDNs must be separated by a space. Requests containing URLs (for example, SIP
calls) whose host portion matches any of the FQDNs in this parameter will be recognized as a
request destined for this cluster and/or devices attached to it.
DNS server configuration
Configure the DNS server (that is used by the Cisco VCS) with DNS SRV records for the CUCM
cluster.
cluster.
_sips._tcp.fqdn_of_cucm_cluster
records for TLS connectivity (one record for each CUCM
node)
or
_sip.tcp.fqdn_of_cucm_cluster
records for TCP connectivity (one record for each CUCM
node)
Cisco VCS Control configuration
Cisco VCS configuration requires 3 steps:
Create a CUCM DNS zone
Adjust search rule
Delete the old CUCM neighbor zone
Create a CUCM DNS zone
1. Go to
VCS configuration > Zones
.
2. Click New.
3. Configure the fields as follows:
Name
CUCM Cluster Neighbor DNS Zone
Type
DNS
Hop count
15