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Create DNS Host (A) Records for Switchover

If your implementation includes a Switchover pair, complete this procedure for the following phones:

  • Polycom

  • Interaction SIP Station 1 and II

  • Audiocodes

  • Genesys

This procedure creates the DNS Host (A) records required for provisioning for the two CIC servers so that the phones can find the active server when booting up (provisioning) and completing SIP operations. You must be familiar with DNS server configuration and have required domain administrator permissions to complete the network configuration procedures.

Create two "provisioning" DNS Host (A) records for the Switchover pair with the same name, then use the different CIC server voice VLAN IP addresses, as shown in the following table containing sample entries.

Host (A) record name

Type

Address

provision.lab.voip

A

10.250.1.151

provision.lab.voip

A

10.250.1.152

Note:

  • Genesys recommends that you use "provision" in the Host (A) record name to identify clearly the purpose of these records.

  • The Host (A) record name cannot match any existing record name.

  • Do not use the name of either CIC server.

To create the DNS Host (A) records for the Switchover pair

  1. Right-click on the new DNS forward lookup zone for voice (in this example, lab.voip) and then click New Host (A or AAA)…

  2. In the New Host dialog box, complete the following information.

    Name: Name of the provisioning Host (A) record for the Switchover pair (in this example, provision).

    IP address: IP address of the active CIC server (in this example, 10.250.1.151).

    Create associated pointer (PTR) record: If selected, the system doesn't create an associated pointer record for the new host. Ensure that you clear this check box.

  3. Click OK. A message appears, indicating that the host record (in this example, provision.lab.voip) created successfully.

  4. Repeat the first two steps to create the second Host (A) record and then do the following:

    1. In the Name box, type the exact same name that you used for the provisioning Host (A) (in this example, provision).

    2. In the IP address field, specify the IP address of the backup CIC server (in this example, 10.250.1.152).

    3. All other fields should be identical to the first Host (A) record created.

    5. When finished, the records that you created in the voice VLAN forward look up zone (in this example, lab.voip) appear in the container.

  5. To verify the records that you created, run an nslookup on the command-line for this record, for example, provision.lab.voip. The server returns the IP addresses in a random order.