Modifying the cluster IP addresses

You can display and change the IP addresses that are associated with a cluster from the Modify IP Addresses panel.

This task assumes that you have already launched the SAN Volume Controller Console.

If you change the cluster IP address, the cluster stops serving Web pages that use the old IP address. You must use the new IP address to reconnect your Web browser to the cluster. When you reconnect to the cluster, accept the new site certificate.

Perform the following steps to change the IP addresses:

Click Manage Cluster > Modify IP Address in the portfolio. The Modify IP Addresses panel is displayed. Both IPv4 and IPv6 addresses can be defined on this panel. The Modify IP Addresses panel displays the cluster Ethernet ports and the IP addresses that are associated with them. The first Ethernet port IP address is configured during the initial configuration of the cluster from the SAN Volume Controller node. The second port is optional and can be configured to provide redundancy to the cluster.
Select the cluster Ethernet port that you want to change IP address settings for and select Modify Port Settings from the task list and click Go. The Modify Port Settings panel displays.
On the Modify Port Settings panel, enter the new IP address values for the selected cluster Ethernet port. If you are changing IP setting that you are currently using to connect to the cluster, you may need to re-establish the connection to the cluster.
- If you are updating IPv4 addresses, provide the following information for the cluster:
  IP address
  
  Enter a valid IPv4 address for the selected cluster Ethernet port.
  
  Service IP Address
  
  Select the service IP address which connects to a node if the node has been removed from the cluster and is being serviced. You can select one of the following options:
  Assign automatically (DHCP)
  
  Select this if you want the service IP address to be assigned automatically through a DHCP server.
  
  Static IP:
  
  Enter an IP address for the service IP address.
  
  Subnet Mask
  
  Enter the subnet mask for the cluster.
  
  Gateway
  
  Enter the gateway IP address used for the cluster.
- If you are updating IPv6 addresses, provide the following information for the cluster:
  IP address
  
  Enter a valid IPv6 address for the selected cluster Ethernet port.
  
  Service IP Address
  Select the service IP address which connects to a node if the node has been removed from the cluster and is being serviced. You can select one of the following options:
  Assign automatically (DHCP)
  
  Select this if you want the service IP address to be assigned automatically through a DHCP server.
  
  Static IP:
  
  Enter an IP address for the service IP address.
  
  The SAN Volume Controller Console supports the following IPv6 formats:
  - Eight colon-separated groups of four hexadecimal digits; for example, 1234:1234:abcd:0123:0000:0000:7689:6576
  - Eight colon-separated groups of hexadecimal digits with leading zeros omitted; for example, 1234:1234:abcd:123:0:0:7689:6576
  - Zero suppression format; for example, 1234:1234:abcd:123::7689:6576
    Note: You can only suppress one set of zeros in an address.
  IPv6 Network Prefix
  
  Displays the network prefix that is associated with the IPv6 cluster and service IP addresses. Valid values are 0 - 127.
  
  Gateway
  
  Enter the gateway IP address used for the cluster.
Click OK.

A new SSL certificate is generated by the cluster to display the new IP address. This new certificate displays when the Web browser first connects to the cluster.

Changing from an IPv4 to an IPv6 address

Your cluster IP address can be an IPv4 or IPv6 address.

Perform the following steps to change the cluster IP address from IPv4 to IPv6:

To change the cluster to accept both IPv4 and IPv6 addresses, complete the following steps:
1. Click Manage Cluster > Modify IP Addresses in the portfolio. The Modify IP Addresses panel is displayed. On this panel there are two tables display for each of the supported address structures.
2. Select the Cluster Ethernet Port 1 for the IPv4 cluster, and select Modify Port Settings from the task list for the Cluster Ethernet Port 1 and click Go.
3. On the Modify Port Settings panel, update the IPv4 addresses to the new IPv6 address and click OK.
4. Repeat Steps 1 and 2 for the Cluster Ethernet Port 2, if it is configured.
Remove the managed cluster with the IPv4 address, by completing the following tasks:
1. Click View Cluster Properties in the portfolio. The View Cluster Properties panel is displayed.
2. Select the cluster you want to remove and select Remove a Cluster from the list. Click Go. The Confirming the Removal of Cluster panel is displayed.
3. Click Yes to remove the cluster.
4. Return to the View Cluster Properties panel.
Verify the cluster is available on the new address by issuing the ping command for the new IP address. A successful ping indicates that the cluster is available at the new IP address.
Add the cluster with the new IPv6 address, by completing these steps:
1. On the Viewing Clusters panel, select Add a Cluster from the list and click Go. The Adding a Cluster panel is displayed.
2. Type the IPv6 address for the cluster.
3. Ensure that the Create (Initialize) Cluster check box is not selected.
4. Click OK.
5. Click Yes to confirm adding the cluster.
Return to the Modify IP Addresses panel, and select the cluster Ethernet port with the IPv4 setting and select Clear Port Settings from the task list and click Go. The Delete Cluster IPv4 Settings panel displays
Click Delete to delete the IPv4 settings.

The cluster is now only available from the IPv6 address.

Changing from an IPv6 to an IPv4 address

Your cluster IP address can be an IPv4 or IPv6 address.

Perform the following steps to change the cluster from IPv6 to IPv4:

Change the cluster to accept both IPv4 and IPv6 addresses, by completing these steps:
1. Click Manage Cluster > Modify IP Addresses in the portfolio. The Modify IP Addresses panel is displayed. On this panel there are two tables display for each of the supported address structures.
2. Select the Cluster Ethernet Port 1 for the IPv6 cluster, and select Modify Port Settings from the task list for the Cluster Ethernet Port 1 and click Go.
3. On the Modify Port Settings panel, update the IPv6 addresses to the new IPv4 address and click OK.
4. Repeat Steps 1 and 2 for the Cluster Ethernet Port 2, if it is configured.
Remove the managed cluster with the IPv6 address, by completing the following tasks:
1. Click View Cluster Properties in the portfolio. The View Cluster Properties panel is displayed.
2. Select the cluster with the IPv6 address that you want to remove and select Remove a Cluster from the list. Click Go. The Confirming the Removal of Cluster panel is displayed.
3. Click Yes to remove the cluster.
4. Return to the View Cluster Properties panel.
Verify the cluster is available on the new settings by issuing the ping command with the new IP address. A successful ping indicates that the cluster is available at the new IP address.
Add the cluster with the new IPv4 address, by completing these steps:
1. On the Viewing Clusters panel, select Add a Cluster from the list and click Go. The Adding a Cluster panel is displayed.
2. Type the IPv4 address for the cluster.
3. Ensure that the Create (Initialize) Cluster check box is not selected.
4. Click OK.
5. Click Yes to confirm adding the cluster.
Return to the Modify IP Addresses panel, and select the cluster Ethernet port with the IPv4 setting and select Clear Port Settings from the task list and click Go. The Delete Cluster IPv4 Settings panel displays
Click Delete to delete the IPv4 settings.

The cluster is now only available from the IPv4 address.