A sample of channel paths that are defined as dedicated, shared, and spanned is shown in  Figure 5-3. The following definitions of a channel path are shown in Figure 5-3: CSS0 Partition 1 . . . Partition 2 Partition 14 Partition 15 Partition 16 Partition 17 Partition 18 Partition 28 . . . MIF-1 MIF-2 MIF-F . . . CSS1 MIF-1 MIF-2 MIF-3 MIF-F CHPID 00 CHPID 01 CHPID 02 CHPID 03 Share PCHID 10B PCHID 10C PCHID 10D PCHID 20E . . . CHPID FF PCHID 20A CHPID 04 SPAN CHPID 06 SPAN PCHID 120 CHPID 00 CHPID 01 CHPID 05 Share CHPID 22 CHPID FF PCHID 145 PCHID 146 PCHID 147 PCHID 158 PCHID 159 . . . . . . . . . Figure 5-3 IBM Z CSS: Channel subsystems with channel spanning GLYPH<SM590000> CHPID FF, which is assigned to PCHID 20A is dedicated access for partition 15 of LCSS0.  The same applies to CHPID 00,01,02 of LCSS0, and CHPID 00,01,FF of LCSS1. GLYPH<SM590000> CHPID 03, which is assigned to PCHID 20E is shared access for partition 2, and 15 of  LCSS0. The same applies to CHPID 05 of LCSS1. GLYPH<SM590000> CHPID 06, which is assigned to PCHID 120 is spanned access for partition 1, 15 of  LCSS0, and partition 16, 17 of LCSS1. The same applies to CHPID 04. Channel spanning is supported for internal links (HiperSockets and IC links) and for certain  types of external links. External links that are supported on z14 ZR1 servers include FICON  Express16S+, FICON Express16S, FICON Express8S, OSA-Express6S, OSA-Express5S,  and Coupling Links.  The definition of LPAR name, MIF image ID, and LPAR ID are used to identify an LPAR by the  channel subsystem to identify I/O functions from different LPARs of multiple LCSSs, which  support the implementation of these dedicated, shared, and spanned paths.  168  IBM 14 Model ZR1 Technical Guide