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CHAPTER
3-1
Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-7113-05
3
Overview: Cisco CRS-1 Shared Port Adapters
This chapter describes the shared port adapters (SPAs) that are supported on the Cisco CRS-1 router and
contains the following sections:
• SPA Summary, page 3-1
• Bandwidth Oversubscription, page 3-2
• 4-Port OC-3c/STM-1 POS SPA Overview, page 3-4
• 8-Port OC-12c/STM-4 Multirate POS SPA Overview, page 3-8
• 2-Port and 4-Port OC-48c/STM-16 POS/RPR SPA Overview, page 3-13
• 1-Port OC-192c/STM-64 POS/RPR XFP SPA Overview, page 3-16
• 1-Port OC-192c/STM-64 POS/RPR VSR Optics SPA Overview, page 3-19
• 5-Port Gigabit Ethernet SPA Overview, page 3-22
• 8-Port Gigabit Ethernet SPA Overview, page 3-26
• 10-Port Gigabit Ethernet SPA Overview, page 3-29
• 1-Port 10-Gigabit Ethernet SPA Overview, page 3-33
• 2-Port and 4-Port Clear Channel T3/E3 SPA Overview, page 3-36
SPA Summary
Table 3-1 shows summary descriptions of the SPAs that are supported on the Cisco CRS-1 router.
Ta b l e 3-1 SPA Summary
SPA SPA Part Number
Number
of Ports
Minimum Cisco
IOS
XR Software
Minimum
Hardware
Revision
4-Port OC-3c/STM-1 POS SPA SPA-4XOC3-POS 4 Release 3.2 1.0
8-Port OC-12c/STM-4 Multirate POS SPA SPA-8XOC12-POS 8 Release 3.3.0 1.0
2-Port OC-48c/STM-16 POS/RPR SPA SPA-2XOC48POS/RPR 2 Release 3.4.0 1.0
4-Port OC-48c/STM-16 POS/RPR SPA SPA-4XOC48POS/RPR 4 Release 3.4.0 1.0
1-Port OC-192c/STM-64 POS/RPR XFP SPA SPA-OC192POS-XFP 1 Release 3.2 1.0
1-Port OC-192c/STM-64 POS/RPR VSR Optics SPA SPA-OC192POS-VSR 1 Release 3.4.1 1.0