Table of Contents
Release Notes for Cisco ASR 901 Series Aggregation Services Router for CiscoIOSRelease15.5(1)S
System Specifications and Memory Details
Determining the Software Version
New Hardware Features in Release 15.5(1)S
New Software Features in Release 15.5(1)S
IEEE 1588v2 (PTP) Asymmetric Phase Correction
OSPFv3 IPSec ESP Encryption and Authentication
Modified Software Features in Release 15.5(1)S
Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.5(1)S
Last Updated Date: November 2014
First Published Date: November 2014
This release notes is for the Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.5(1)S and contains the following sections:
Introduction
The Cisco ASR 901 Series Aggregation Services Router is a cell-site access platform specifically designed to aggregate and transport mixed-generation radio access network (RAN) traffic. The router is used at the cell site edge as a part of a 2G, 3G, or 4G RAN.
The Cisco ASR 901 router helps enable a variety of RAN solutions by extending IP connectivity to devices using Global System for Mobile Communications (GSM), General Packet Radio Service (GPRS), Node Bs using High Speed Packet Access (HSPA) or Long Term Evolution (LTE), base transceiver stations (BTSs) using Enhanced Data Rates for GSM Evolution (EDGE), Code Division Multiple Access (CDMA), CDMA-2000, EVDO, or WiMAX, and other cell-site equipment.
It transparently and efficiently transports cell-site voice, data, and signaling traffic over IP using traditional T1 and E1 circuits, as well as alternative backhaul networks such as Carrier Ethernet and DSL, Ethernet in the First Mile (EFM), and WiMAX. It also supports standards-based Internet Engineering Task Force (IETF) Internet protocols over the RAN transport network, including those standardized at the Third-Generation Partnership Project (3GPP) for IP RAN transport. Custom designed for the cell site, the Cisco ASR 901 router features a small form factor, extended operating temperature, and cell-site DC input voltages.
Table 1 lists the Cisco ASR 901 1G Router model versions.
Table 2 lists the Cisco ASR 901 10G Router model versions.
Note Some of the Cisco ASR 901 models have port based licensing. For more details, see the Licensing chapter in Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide.
System Specifications and Memory Details
Table 3 lists the supported system configurations and memory details for the Cisco ASR 901 router:
Determining the Software Version
To determine the image and version of Cisco IOS software running on your Cisco ASR 901 router, log in to the router and enter the show version command in the EXEC mode:
The following example shows output from Cisco ASR 901 router that supports normal IOS software.
The following example shows output from Cisco ASR 901 Series Aggregation Services Router, IPsec enabled Ethernet version.
New and Changed Information
- New Hardware Features in Release 15.5(1)S
- New Software Features in Release 15.5(1)S
- Modified Software Features in Release 15.5(1)S
ARP Based Classification
The Address Resolution Protocol (ARP) protocol on the Cisco ASR 901 Series Routers enhances the existing QoS classification to include protocol based classification. This feature matches the ARP packets coming to the Gigabit Ethernet interface and assigns priority percent queue for the packets.
For more information about this feature, see Configuring QoS feature guide at the following URL: http://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_011000.html
Dry Contact Alarm Port
This feature allows you to configure and monitor four external dry-contact alarm inputs. You can connect up to four alarm inputs from external devices, such as a door, a temperature gauge, or a fire alarm, to the alarm input port on the front panel of the router. Using the alarm-contact command, you set the alarm severity to minor, major, or critical.
For information about this feature, see Managing and Monitoring Network Management Features feature guide at the following URL: http://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_0100.html
IEEE 1588v2 (PTP) Asymmetric Phase Correction
In Optical Transport Network (OTN) network based deployments, though the PDV produced by the network is within the G.8261 limits and asymmetry created by traffic is also less, the OTN elements may add a fixed asymmetry (about 4-5usec) when the OTN element reboots or optical link related event occurs. This feature helps in asymmetry detection, which is tied to the BMCA clock switchover.
For more information about this feature, see Configuring Clocking feature guide at the following URL: http://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_010110.html
MLPPP QoS Egress Shaping
Traffic shaping allows you to control the speed of traffic that is leaving an interface to match the intake capacity of the receiving interface. This feature allows you to shape all MLPPP interfaces using a port policy with a class-default shaper configuration.
For more information about this feature, see Configuring QoS feature guide at the following URL: http://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_011000.html
OSPFv3 IPSec ESP Encryption and Authentication
To ensure that Open Shortest Path First version 3 (OSPFv3) packets are not altered and re-sent to the device, OSPFv3 packets must be authenticated. OSPFv3 uses the IPSec secure socket API to add authentication to OSPFv3 packets.
For more information about this feature, see IPv6 Routing: OSPFv3 Authentication Support with IPsec feature guide at the following URL: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/15-sy/iro-15-sy-book/ip6-route-ospfv3-auth-ipsec.html
Supported Hardware
Table 4 and Table 5 shows the SFP modules supported on the Cisco ASR 901 routers:
Important Notes
- 10G SFPs inserted into 1GE port provides 1GE speed.
- 10G SFPs inserted into 10GE port without a valid license provides only 1GE speed.
- 100M SFP works only with no negotiation auto command.
- If 1G SFP is used to connect a 10G port to a 1G port, you do not have to explicitly configure the no negotiation auto command to bring up the link.
- Effective with Cisco IOS Release 15.4(3)S, the auto-select feature is supported on 100M SFPs. However, this feature is not supported on combo ports.
- Remote Fault Indication feature is not applicable for 1G mode in 10GE ports. It applies only to 10G mode in 10GE ports.
Table 4 SFPs Supported on the Cisco ASR 901 1G and 10G Routers for 1G Mode
Table 5 SFPs Supported on the Cisco ASR 901 10G Router for 10G Mode
Note For information on how to configure SFPs, see the Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide.
Caveats
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these three severity levels. Only select severity 3 caveats are listed.
This section contains the following topics:
Bug Search Tool
The Caveats section only includes the bug ID and a short description of the bug. For details on the symptoms, conditions, and workaround for a particular bug you must use the Bug Search Tool.
Use the following link to access the tool: https://tools.cisco.com/bugsearch/search
You will be prompted to log into Cisco.com. After successful login, the Bug Search Tool page opens. Use the Help link in the Bug Search Tool to obtain detailed help.
Open Caveats
This section provides information about the open caveats for the Cisco ASR 901 router running Cisco IOS Release 15.5(1)S.
Resolved Caveats
This section provides information about the resolved caveats for the Cisco ASR 901 router running Cisco IOS Release 15.5(1)S.
Troubleshooting
The following sections describe troubleshooting commands you can use with the router.
Collecting Data for Router Issues
To collect data for reporting router issues, issue the following command:
Collecting Data for ROMMON Issues
To collect data for ROMMON issues, issue the following command while in the EXEC mode:
Note If you contact Cisco support for assistance, we recommend that you provide any crashinfo files stored in flash memory. For more information about crashinfo files, see http://www.cisco.com/en/US/products/hw/routers/ps167/products_tech_note09186a00800a6743.shtml.
Related Documentation
Documents related to the Cisco ASR 901 Series Aggregation Services Router include the following:
- Cisco ASR 901 Series Aggregation Services Router Hardware Installation Guide
- Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
- Regulatory Compliance and Safety Information for Cisco ASR 901 Series Aggregation Services Routers
- Cisco ASR 901 Series Aggregation Services Router Series MIB Specifications Guide
To access the related documentation on Cisco.com, go to:
- Cisco ASR 901 1G Router home page: http://www.cisco.com/en/US/partner/products/ps12077/tsd_products_support_series_home.html
- Cisco ASR 901 10G Router home page: http://www.cisco.com/c/en/us/support/routers/asr-901-10g-series-aggregation-services-routers/tsd-products-support-series-home.html
Services and Support
For information on obtaining documentation, obtaining support, providing documentation feedback, security guidelines, and also recommended aliases and general Cisco documents, 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
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
Release Notes for Cisco ASR 901 Aggregation Series Router for Cisco IOS Release 15.5(1)S