Table Of Contents
Release Notes for Cisco Network Positioning System Release 1.0.1 on the Cisco CRS Router
Obtaining Documentation and Submitting a Service Request
Release Notes for Cisco Network Positioning System Release 1.0.1 on the Cisco CRS Router
Last Updated: January 18, 2012Text Part Number: OL-25895-01These release notes describe the requirements for running Cisco Network Positioning System (NPS) on the Cisco CRS routers.
Contents
These release notes contain these sections:
Introduction
Cisco NPS enables consumers of cloud services to select the optimal Data Center for service delivery. Cisco NPS leverages policy-driven engines to make this selection based on network proximity, latency, packet loss, and data center capabilities.
These components are supported in Release 1.0.1:
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Performance Manager (PFM)
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System Requirements
This section describes the system requirements for Cisco NPS support on the Cisco CRS routers. It includes:
Hardware Supported
Cisco NPS is supported on the Carrier Grade Services Engine (CGSE) on these CRS-1 chassis types:
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•
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Cisco NPS is supported on the CGSE on these CRS-3 chassis types:
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•
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For information about the CGSE, refer to the Cisco CRS 20 Gbps Carrier Grade Services Engine Physical Layer Interface Module Installation Note at:
http://www.cisco.com/en/US/partner/docs/routers/crs/crs1/plim/installation/guide/20gbpscrscgseplim.html
Software Requirements
The requirements for Cisco NPS running on a Cisco CRS router are:
•
•
For information about the minimum memory requirements for Cisco IOS XR Release 4.2 on the Cisco CRS routers, refer to the Release Notes for Cisco CRS-1 and Cisco CRS-3 for Cisco IOS XR Software Release 4.2 at:
http://www.cisco.com/en/US/products/ps5763/prod_release_notes_list.html
This table lists the images required for running NPS:
Table 1 Image Names for Cisco NPS on Cisco CRS Routers
nps-mips64-1.0.1.rpm
NPS image
hfr-services-px.pie
Cisco IOS XR Services PIE
New and Changed Information
This is the first release of Cisco NPS on Cisco CRS routers.
Installation Notes
For information about installing NPS software on Cisco CRS routers, refer to Cisco Network Positioning System Installation on the Cisco CRS Series Routers at:
http://www.cisco.com/en/US/products/ps5763/products_installation_and_configuration_guides_list.html
Caveats
These open caveats apply to Cisco NPS Release 1.0.1 on Cisco CRS Routers:
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Basic Description:
cd xmpp password change does not go through.
Symptom:
CD is unable to connect to the XCP/Jabber server after attempting to change the password.
Conditions:
This issue only occurs if the user tries to change the password while keeping the username the same.
Workaround:
While this CLI should be rarely used, the user can change the username along with the password.
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Basic Description:
CD process is unable to connect to Jabber server after DNS configuration.
Symptom:
After switching from static mapping of hostname to ip address to using a nameserver, the CD process cannot connect to the Jabber server.
Conditions:
This issue occurs when you switch config as in the following example:
from:
ip host ccnsr.com 26.0.0.2
to:
ip nameserver 11.0.0.2
Workaround:
Create a static resolution for the local host and reconnect.
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Basic Description:
NPSSRE: SRE process fails clear service-resolution statistics under stress
Symptom:
SRED gives the following error, and the SRED process fails:
trap divide error rip:4108df rsp:7fffe2659ee0 error:0Conditions:
Requests must be sent at the rate of 10 requests per second. The SRE must require both PXE and PFM resolution. DCs must be advertised using XMPP.
Workaround:
None.
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Basic Description:
At 10 requests per second, some POST requests get a 400 response 20 seconds later.
Symptom:
NPS returns a 400 Bad Message final response with a previously buffered ranked DC list in response to a POST request 20 seconds after the POST request is sent.
Conditions:
Under a load of 10 requests [POST/GET] per second with Proximity as the priority algorithm and with 35 DCEs advertising, this issue is seen on 0.022% of the ITSM POST requests. Frequency of occurrence is directly related to request per second rate, and the issue is not noticed at or below two requests [POST/GET] per second.
Workaround:
ITSM should drop the POST request if a 202 accepted is not received within 15 seconds and retry the request again. If ITSM receives the 400 Bad Message HTTP header but with a ranked list, it should ignore it.
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Basic Description:
PXE syslog is not totally turned off by default.
Symptom:
PXE syslog is not completely turned off by default and continuous to display on the console.
Conditions:
This issue occurs when enabling console logging debug/syslog.
Workaround:
Turn off debug.
Related Documentation
For more information about Cisco NPS, refer to these documents:
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:
http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html
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This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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