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Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-7113-05
Chapter 2 Overview: Cisco CRS-1 SPA Interface Processor
Identifying Slots and Subslots for SIPs and SPAs
Figure 2-5 Cisco CRS-1 SIP-800 Subslot Locations
SPA Interface Addresses on SIPs
SPAs in the Cisco CRS-1 router running Cisco IOS XR Software Release 3.4.1 use an addressing format
that specifies the physical location of the SIP, SPA, and interface. The interface address format is
rack/slot/subslot/port, where:
• rack—Specifies the rack number, 0 in a single-chassis system.
• slot—Specifies the slot number in the Cisco CRS-1 router in which the SIP that contains the SPA is
installed:
–
For the 8-slot line card chassis—0 through 7
–
For the 16-slot line card chassis—0 through 15
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