## 14.2.3 Defining a Coupling Facility link with CS5 CHPIDs 

The only way to define a CS5 CHPID to another CS5 CHPID is direct connected. 

The following are considerations for creating a CF link using CS5 CHPIDs: 

GLYPH<SM590000> The ICA SR connection is a physical cable between two FC#0176 cards on the same or different processors. 

GLYPH<SM590000> Up to four logical CHPIDs per port can be defined over that physical connection. 

GLYPH<SM590000> How many CS5 CF links are required to provide enough primary and secondary links as well as coupling bandwidth. 

GLYPH<SM590000> Which z/OS LPARs on the same or different processors need access to the CF LPARs. 

GLYPH<SM590000> CF links also provide Server Time Protocol (STP) connectivity for a Coordinated Time Network (CTN) between processors and a sysplex. 

GLYPH<SM590000> The example will be connecting two CS5 CHPIDs (80 and 84) on the same processor. 

To define a Coupling Facility link with CS5 CHPIDs, complete these steps: 

1. From the main HCD panel, select option 1.3. Processors . 

2. Enter s  next to the Processor that you want to create the first CF link from, and press Enter . 

3. Enter s  next to the CSS ID that has the CS5 CHPID definition you want to create the first CF link from, and press Enter . 

4. Scroll through the Channel Path List until you find the first CS5 CHPID you want to connect from, or in the command line, enter L 80 . In our example, we use 80 . 

5. Enter f  next to the CHPID definition (Figure 14-7), and press Enter . 

Channel Path List Row 1 of 8 More: > Command ===> _______________________________________________ Scroll ===> CSR Select one or more channel paths, then press Enter. To add use F11. Processor ID . . . . : ARIES Configuration mode . : LPAR Channel Subsystem ID : 2 CHID+ Dyn Entry + / CHPID AID/P Type+ Mode+ Sw+ Sw Port Con Mng Description f  80 00/1 CS5 SHR __ __ __ N No FC#0176 ICA SR 2 Links _ 84 17/1 CS5 SHR __ __ __ N No FC#0176 ICA SR 2 Links _ C3 1BC OSE SHR __ __ __ No FC#0446 OSA Express7S 1000Base-T _ C6 11C OSC SHR __ __ __ No FC#0446 OSA Express7S 1000Base-T _ E1 128 OSD SHR __ __ __ No FC#0445 OSA Express7s 10GbE SR _ F0 7E0 IQD SHR __ __ __ No IQD Internal Queued Direct Comms ******************************* Bottom of data ******************************* 

6. On the next panel, HCD now prompts you to specify the second CS5 CHPID you want to connect to. Scroll through the Channel Path List until you find the second CS5 CHPID you want to connect to, or in the command line enter L 84 . In our example, we use 84 . 

