Multi-Tech Systems 40-01459-D0-001 manual Mainframe TCP/IP Profile

Figure 6-5. TCP/IP Direct Connect Properties

; CTC connection DEVICE DEVCTC1 CTC a40

LINK LINKCTC1 CTC 0 DEVCTC1

; Subchannel Address

HOME

207.169.12.129 LINKCTC1

GATEWAY	Home IP Address
;

;Direct Routes - Routes that are directly connected to my interfaces.

;Network First Hop Link Name Packet Size Subnet Mask Subnet Value

207.169.12.130 = LINKCTC1 4096 255.255.255.192 0.0.0.128

START DEVCTC1

Server’s IP Address

Subnet Mask

Figure 6-6. Mainframe TCP/IP Profile

2.Verify that the subchannel address defined in the TCP/IP Direct Connect Properties screen (Figure 6-5) points to the correct device in the ESCON configuration so that the Unit subchannel address assigned in the ESCON configuration matches the DEVICE statement of the TCP/IP Profile (Figure 6-6). In the example, ‘a40’ indicates a channel address of ‘a’ and a subchannel address of ‘40’. Keep in mind that a CTC link actually uses two subchannels. Specifying ‘40’ implies that both subchannel ’40’ and ‘41’ will be used for this link.

3.Verify that the IP address and subnet mask defined in the Microsoft TCP/IP Properties screen (Figure 5-19) match the server’s IP address and subnet mask defined in the TCP/IP Profile as a direct route for this link (see Figure 6-6).

4.Verify that the mainframe’s IOCP has two consecutive devices defined as type “SCTC” (serial Channel-to-Channel) with the first of these devices having a subchannel address matching that defined in the DEVICE statement of the TCP/IP Profile (Figure 6-6).

52 PCI ESCON Adapter Installation Guide