To create a DNS SRV record
1. To open DNS, click Start, click Control Panel, double-click Administrative Tools, and then double-click DNS.
2. In the console tree for your domain, expand Forward Lookup Zones, right-click the domain.
3. Click Other New Records.
4. In Select a resource record type, select Service location (SRV).
5. Click Create Record.
6. Select one of the following:
· If your organization uses only Communicator clients:
o If you are using TLS, type _sipinternaltls for the Service, type _tcp in Protocol, and then type 5061 in Port Number.
o If you are using TCP, type _sipinternal for the Service, type _tcp in Protocol, and then type 5060 in Port Number.
· If your organization uses Windows Messenger clients:
o If you are using TLS, type _sip for the Service, type _tls in Protocol, and then type 5061 in Port Number.
o If you are using TCP, type _sip for the Service, type _tcp in Protocol, and then type 5060 in Port Number
· If your organization uses a mix of clients, publish one of each SRV record, and point both SRV records to the internal FQDN of your Enterprise pool used by your clients. Add cross reference to cert portion.
7. In Host offering this service, type the FQDN of the pool and enter the VIP address assigned to the pool’s load balancer.
Creating a DNS A Record for Your Enterprise Pool
For your clients to connect to your Enterprise pool, an A record must exist for the pool that points to the VIP of the load balancer connected to your pool. When a client connects to the Live Communications Server, DNS returns the first A record it finds for a host name.
To create the Live Communications Server A (host) resource record for your pool
1. To open DNS, click Start, click Control Panel, double-click Administrative Tools, and then double-click DNS.
2. In the console tree for your domain, expand Forward Lookup Zones, right-click the domain.
3. Click New Host (A).
4. In Name (uses parent domain name if blank), type the host name of the server running Live Communications Server.
5. In IP Address, enter the VIP address of the load balancer to which the pool is connected. All client connections are routed through this load balancer to servers in the pool.
6. If you have a reverse DNS lookup zone, click the Create Associated Pointer Record (PTR) check box. Otherwise, do not select this check box.
7. Click Add Host, click OK, and then click Done.