Specifications

5-3
Cisco XR 12000 Series Router SIP and SPA Software Configuration Guide, Release 3.2
Release 3.2, OL-6396-01, Rev.A1 January 9, 2006
Chapter 5 Overview of Packet over SONET SPAs
Restrictions
Restrictions
As of Cisco IOS Release 12.0S, the 1-Port OC-192c/STM-64 POS/RPR XFP SPA does not support the
following features:
• RSP/SRP
Supported MIBs
The following MIBs are supported in Cisco IOS Release 12.2(20)S1 for the 1-Port OC-192c/STM-64
POS/RPR XFP SPA on the Cisco XR 12000 Series Router:
• CISCO-ENTITY-ASSET-MIB
• CISCO-EXTENDED ENTITY-MIB
• CISCO-OPTICAL-MIB
• ENTITY-MIB
• IF-MIB
• SONET-MIB RFC 2558
To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use
Cisco MIB Locator found at the following URL:
http://tools.cisco.com/ITDIT/MIBS/servlet/index
If Cisco MIB Locator does not support the MIB information that you need, you can also obtain a list of
supported MIBs and download MIBs from the Cisco MIBs page at the following URL:
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
To access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your
account information, send a blank e-mail to [e-mail]. An automatic check will verify
that your e-mail address is registered with Cisco.com. If the check is successful, account details with a
new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com
by following the directions found at this URL:
http://www.cisco.com/register
SPA Architecture
This section provides an overview of the architecture of the POS SPAs and describes the path of a packet
in the ingress and egress directions. Some of these areas of the architecture are referenced in the SPA
software and can be helpful to understand when troubleshooting or interpreting some of the SPA CLI
and show command output.