Checking Hardware And Software Compatibility; Bandwidth Oversubscription - Cisco XR 12000 Series Hardware Installation Manual

Chapter 2 Overview: Cisco XR 12000 Series Router Shared Port Adapters
Table 2-1 Supported SPAs on Cisco XR 12000 Series Routers (continued)
Product Number
SPA-3XOC3-ATM-V2
SPA-1XOC12-ATM-V2
SPA-2CHT3-CE-ATM
SPA-24CHT1-CE-ATM
SPA-1CHOC3-CE-ATM 1-Port Channelized OC-3 ATM CEoP SPA
SPA-1X10GE-L-IT
SPA-1X10GE-WL-V2

Checking Hardware and Software Compatibility

To check the minimum software requirements of Cisco IOS XR software with the hardware installed on
your router, Cisco maintains the Software Advisor tool on Cisco.com. This tool does not verify whether
SIPs or SPAs within a system are compatible, but it does provide the minimum Cisco IOS XR
requirements for individual hardware modules or components.
Note Access to this tool is limited to users with Cisco.com login accounts.
To access Software Advisor, click Login at Cisco.com, type "Software Advisor" in the SEARCH box,
and click GO. Click the link for the Software Advisor tool.
Choose a product family or enter a specific product number to search for the minimum supported
software release needed for your hardware.

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. The aggregate throughput should not exceed 2 full-rate SPAs for 10G SIPs.
The SIP-600 [10G SIP], SIP-401 [2.5G SIP], SIP-501 [5G SIP], and SIP-601 [10G SIP] can support up
Note
to 20G of installed SPAs, but the bandwidth through the engine and the fabric is no more than 10G
(SIP-600 or SIP-601). The bandwidth through the engine and the fabric is no more than 5G for the
SIP-501 and is no more than 2.5G for the SIP-401.
In Cisco IOS XR software release 3.9.1 or prior, the full-rate SPAs need to be positioned in bay 0 and 1.
Note
Table 2-2
as the cumulative bandwidth (total bandwidth) for all ports available on the SPA.
OL-17438-04
Description
3-Port Clear Channel OC-3 ATM SPA
1-Port Clear Channel OC-12 ATM SPA
2-Port Channelized T3/E3 ATM CEoP SPA
24-Port Channelized T1/E1/J1 ATM CEoP SPA 24
1-Port 10-Gigabit Ethernet DWDM SPA
1-Port 10-Gigabit Ethernet WAN PHY SPA
provides information about the bandwidth for each port (per-port bandwidth) on a SPA, as well
Number of
Ports
3
1
2
1
1
1
Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide

Bandwidth Oversubscription

Minimum
Minimum IOS Hardware
XR Release Revision
3.7.0 1.0
3.7.0 1.0
3.7.0 1.0
4.0.1 1.0
4.1.1 1.0
4.1.1 1.0
4.3.0 1.0
2-3