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52 PCI ESCON Adapter Installation Guide
Figure 6-5. TCP/IP Direct Connect Properties
; CTC connection
DEVICE DEVCTC1 CTC a40
LINK LINKCTC1 CTC 0 DEVCTC1
;
HOME
207.169.12.129 LINKCTC1
GATEWAY
;
; 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
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).
Home IP Address
Subchannel Address
Server’s IP Address Subnet Mask