This article discusses how to configure DDP (Distributed Data Protocol) for peer to peer connections between DSM and Caché.
Important notes before you get started:
This article includes procedures for the following processes:
Install Packet Driver on Windows 2000
You should copy both the .inf and .sys files to the same directory for installation on Windows 2000. On the Caché distribution CD this is the win2k folder in the drivers directory.
Installation instructions are as follows:
  1. Right click My Network Places on the desktop and click Properties.
  2. Right click Local Area Connection in the Network and Dial-up Connections dialog box and click Properties.
  3. Click Install in the Local Area Connection Properties dialog box.
  4. Select Protocol in the Select Network Component Type dialog box and click Add.
  5. Click Have Disk in the Select Network Protocol dialog box.
  6. Enter the path to the packet driver kit and click Browse.
  7. Select ispkt2k.inf and click Open.
  8. Click OK upon return to the Install from Disk dialog box.
  9. Restart Windows 2000. This is necessary now because there is currently a problem finding adapters on the first try following installation. An alternative to restarting Windows 2000 is to start up Caché, then shut down and restart Caché.
Configure Connection in Caché 4.x
To configure the DDP connection enter the network configuration information using the Advanced tab of the Caché Configuration Manager:
Enter the information in the following branches of the Network tree:
If you want to connect to multiple DSM systems, simply add more DDP devices under Ethernet Devices Mappings. If you need to modify the retransmit timing or other settings, select the Advanced Options branch of the Network tree.
DSM-DDP
To enter the DSM-DDP network configuration information:
  1. Expand the Network tree and then expand the DSM-DDP branch.
  2. Select DDP Host and click Change. Enter a DDP host three-letter name for the Caché system (ZZZ, for example) and click OK.
  3. Select DDP Groups and click Change. Enter a DDP group number (0, for example) and click OK.
Ethernet Devices Mappings
From the DSM-DDP branch, enter the mapping configuration information for the Ethernet devices:
  1. Select Ethernet Devices Mappings and click Add.
  2. Select Ethernet Address and click Change. Enter the Ethernet address of the Caché system and click OK. Run IPCONFIG or WINIPCFG to determine your physical address.
  3. Select Device and click Change. Enter the Caché system Ethernet ID (ie1 or elnk31, for example). It is stated in IPCONFIG as your Ethernet adapter.
Predefined Remote Volume Sets
Enter all the volume sets on your DSM system that you want to access, one at a time:
  1. Select Volume Set and click Change. Enter the name of the volume set on the DSM system that you want to access and click OK.
Repeat these steps for each volume set. As you enter each one, it is listed in the volume set list:
Troubleshoot
If you cannot see the globals on the DSM system, try the following troubleshooting procedures:
On Caché:
On DSM: