Cisco CRS-1 - Carrier Routing System Router Hardware Installation Guide

3-2
Cisco CRS-1 Carrier Routing System SIP and SPA Hardware Installation Guide
OL-17439-01
Chapter 3 Overview: Cisco CRS-1 Shared Port Adapters
Bandwidth Oversubscription
Bandwidth Oversubscription
Oversubscribing the bandwidth limit recommendations of a router can result in decreased or degraded
performance. For this reason, it is important to determine the amount of bandwidth used by the SPAs on
the router and verify that the total bandwidth used by all SPAs does not exceed the recommended
bandwidth limit of the router. It is also important not to exceed the bandwidth of the SIP. For information
on SIP bandwidth, see the “SIP Summary” section on page 2-1.
The processing on the Cisco CRS-1 SIP-800 is performed by two PLIM ASICs, each of which can
pro
cess up to 20 Gbps of traffic. SPA subslots 0, 1, and 3 are associated with one PLIM ASIC, while
SP
A subslots 2, 4, and 5 are associated with the second PLIM ASIC. See Figure 3-1 for subslot locations.
Figure 3-1 Cisco CRS-1 SIP-800 Slot Locations
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
5-Port Gigabit Ethernet SPA SPA-5X1GE-V2 5 Release 3.4.0 1.0
8-Port Gigabit Ethernet SPA SPA-8X1GE
SPA-8X1GE-V2
8 Release 3.2
Release 3.4.0
1.0
10-Port Gigabit Ethernet SPA SPA-10X1GE-V2 10 Release 3.4.0 1.0
1-Port 10-Gigabit Ethernet SPA SPA-1X10GE-L-V2
SPA-1X10GE-WL-V2
1 Release 3.4.0
Release 3.5.0
1.0
2-Port Clear Channel T3/E3 SPA SPA-2XT3/E3 2 Release 3.4.1 1.0
4-Port Clear Channel T3/E3 SPA SPA-4XT3/E3 4 Release 3.4.1 1.0
Table 3-1 SPA Summary (continued)
SPA SPA Part Number
Number
of Ports
Minimum Cisco
IOS XR Software
Minimum
Hardware
Revision
1 Subslots controlled by one PLIM ASIC 2 Subslots controlled by second PLIM ASIC
129443
subslot 3 subslot 4 subslot 5
subslot 0 subslot 1 subslot 2
1
2

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English