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Data Interface Pairs: Getting Started

You can set up a Data Interface Pair (DIP) at two different levels:

Setting up a DIP Between Two Clients

Important: In this context, a client can be any computer running SnapProtect software, including a MediaAgent or a CommServe host.

A DIP between two client computers can be set up from the Control Panel or from the Client Properties dialog box.

From the Control Panel

  1. From the CommCell Console ribbon, click Control Panel.
  2. In the Control Panel window, under Data, click Data Interface Pairs.

    The Data Interface Pairs Wizard appears.

  3. In the welcome page of the wizard, click Next.
  4. Choose two different hosts by selecting one host name from each list and clicking Next. The wizard shows any defined interface pairs that already exist between those two hosts.
  5. If the pair you need is not already shown, click Add, then select one interface for each host and click Next.

    • If you do not find the network interface you are looking for in the list, you can type its name or IP address.
    • With remote computers, the network interface you specify for a host must be visible to the other host.

  6. Review the state of the defined pairs, then select a pair to make active and click Finish.

    Each client can have only one DIP defined and active at one time between itself and the other client in the pair. If more than one DIP is defined and active (indicated by a check in the Status column), only the pair added most recently is used. To ensure that the pair you want is used, deselect all other pairs between the client you are configuring and the other client.

  7. To verify that the interface pair has been properly set up between the two clients, you can check the firewall configuration of one of the clients:
    1. From the CommCell Browser, navigate to one of the paired clients.
    2. Right-click the client > Properties.
    3. Click Network, then the Summary tab.
    4. In the section named [outgoing], which shows outgoing network routes from that host, look for the entry showing the two clients, with their respective interface names. For example, if you created an interface pair between ida34vm3 and ida34vm1_2, the entry for ida34vm3 should have this layout:

      ida34vm3 ida34vm1_2 type=dip local_iface=172.16.64.228 remote_iface=172.16.64.200

      where local_iface indicates the network interface that ida34vm3 will use to communicate with ida34vm1_2 on that host's remote_iface. The type=dip parameter indicates a data interface pair route. Here is an example firewall configuration summary for a server named rentacs, with a DIP connection to another server named servertest2_32bit:

  8. Push the firewall configuration to each host computer in the pair. (See Pushing Firewall Configurations.)

From the Client Properties

  1. From the CommCell Browser, navigate to one of the two client computers you are connecting. Right-click client > Properties.
  2. Click Advanced, then the Job Configuration tab.
  3. In the Data Interface Pairs area, click Add.
  4. The CommCell Browser populates the Select 1st Computer entry. Click Select 2nd Computer and select a client name, then click Next.
  5. If the pair you need is not already shown, click Add, then select one interface for each host and click Next.

    • If you do not find the network interface you are looking for in the list, you can type its name or IP address.
    • With remote computers, the network interface you specify for a host must be visible to the other host.

  6. Review the state of currently defined pairs, then select the pair to make active and click Next.

    Each client can have only one DIP defined and active at one time between itself and the other client in the pair. If more than one DIP is defined and active (indicated by a check in the Status column), only the pair added most recently is used. To ensure that the pair you want is used, deselect all other pairs between the client you are configuring and the other client.

  7. Click Finish to create the new data interface pair, then click OK twice.
  8. To verify that the interface pair has been properly set up between the two clients, check the firewall configuration of one of the clients this way:
    1. From the CommCell Browser, navigate to one of the paired clients.
    2. Right-click the client > Properties.
    3. Click Network, then the Summary tab,
    4. The section named [outgoing] shows outgoing network routes for that host. Look for the entry showing the two clients, with their respective interface names. For example, if you created an interface pair between ida34vm3 and ida34vm1_2, the entry for ida34vm3 should have this layout:

      ida34vm3 ida34vm1_2 type=dip local_iface=172.16.64.228 remote_iface=172.16.64.200

      where local_iface indicates the network interface that ida34vm3 will use to communicate with ida34vm1_2 on that host's remote_iface. The type=dip parameter indicates a data interface pair route.

    5. Here is an example firewall configuration summary for a server named rentacs, with a DIP connection to another server named servertest2_32bit:

 

Setting up a DIP Between a Client Group and a Client

DIPs between a client group and a client can only be set up from the Control Panel.

Before You Begin

Confirm that the client group that you are setting up already exists.

Procedure

  1. In the CommCell Console, click the Home tab, then click Control Panel.
  2. In the Data area, click Data Interface Pairs > Next.
  3. In the Select 1st Computer list, select the client_group.
  4. In the Select 2nd Computer list, select the client computer to which the clients that are members of the above group will connect through the DIP.
  5. Click Next. If the list has any entries, the "Interface on client_group" column reads, "No Default Interface" for those entries. This is normal.
  6. If the client-side interface that you want to use appears in the list, make sure its Status option is selected, then click that interface and click Next.
  7. If the interface that you want to use does not appear in the list:
    1. Click Add.
    2. In the Interfaces on client list, select the interface to use for this DIP. If the interface is not already there, you can enter its name or IP address here.
    3. Click Next. The new pair's Status is selected by default.
    4. Click the new pair, then click Next.
  8. Review the details for the new pair, then click Finish (or click Back to make changes).
  9. Click Yes to re-open the Data Interface Pairs Wizard, or No to end this procedure.
  10. Close the Control Panel.