Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.5(3)S
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Release Notes for Cisco ASR 901 Series Aggregation Services Router for CiscoIOSRelease15.5(3)S
System Specifications and Memory Details
Determining the Software Version
New Hardware Features in Release 15.5(3)S
New Software Features in Release 15.5(3)S
Modified Software Features in Release 15.5(3)S
Obtaining Documentation and Submitting a Service Request
Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.5(3)S
First Published Date: July 2015
This release notes is for the Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.5(3)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(3)S
- New Software Features in Release 15.5(3)S
- Modified Software Features in Release 15.5(3)S
BCM Parity Errors
BCM Parity Errors feature detects and recovers from parity errors which may get generated on Cisco ASR901 routers due to environmental conditions.
These parity errors, when get detected, generate following type of logs on the device –
unit 0 <TableName> entry <entryId> parity error
This feature automatically recovers parity error on a subset of the table. Therefore, if parity errors in above format are observed on some table, then please contact Cisco TAC for assistance.
HSRP Version 2
This feature uses the new IP multicast address 224.0.0.102 to send hello packets instead of the multicast address of 224.0.0.2, used by HSRP version 1. This new multicast address allows CGMP leave processing to be enabled at the same time as HSRP.
HSRP version 2 permits an expanded group number range, 0 to 4095, and consequently uses a new MAC address range 0000.0C9F.F000 to 0000.0C9F.FFFF. The expanded group number range was changed to allow the group number to match the VLAN number on sub interfaces. This feature allows the router to advertise and learn millisecond timer values. HSRP version 2 packet includes a 6-byte identifier field that is used to uniquely identify the sender of the message (usually populated with interface MAC address).
For detailed information about this feature, see HSRP Version 2 feature at the following URL:
https://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_011011.html
Layer 2 MAC ACLs
This feature provides the capability to filter packets at a fine granularity and allows the permission or denial of the packets based on the MAC source and destination addresses. MAC Access Control Lists (ACLs) are ACLs that filter traffic using information in the layer 2 header of each packet. This ability to filter packets in a modular and scalable way is important for both network security and network management.
For more information about this feature, see Layer 2 MAC ACLs feature guide at the following URL:
https://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_0111000.html
NAT Traversal
This feature introduces support for IP Security (IPsec) traffic to travel through Network Address Translation (NAT) or Port Address Translation (PAT) points in the network by addressing many known incompatibilities between NAT and IPsec. This feature encapsulates the IPsec packets in a User Datagram Protocol (UDP) wrapper that allows the packets to travel across NAT devices.
For information about this feature, see NAT Traversal feature guide at the following URL:
https://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_0101101.html
PTP Debugging over GRE Tunnel
Effective from Cisco IOS Release 3.16, the Cisco ASR 901 Router supports PTP debugging over GRE tunnel feature.
PTP Debugging over GRE Tunnel feature enables the transport of PTP debugging information and PTP packets originated by the device through a GRE tunnel.
For more information about this feature, see PTP Debugging over GRE Tunnel 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_0110110.html
Smart Licensing
Effective from Cisco IOS Release 3.16, the Cisco ASR 901 Router supports Smart Licensing feature.
Smart Licensing is software based licensing end-to-end platform that consists of several tools and processes to authorize customers the usage and reporting of the Cisco products.
For more information about this feature, see Smart Licensing feature guide at the following URL:
https://www.cisco.com/c/en/us/td/docs/wireless/asr_901/Configuration/Guide/b_asr901-scg/b_asr901-scg_chapter_0110111.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(3)S.
Resolved Caveats
This section provides information about the resolved caveats for the Cisco ASR 901 router running Cisco IOS Release 15.5(3)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
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What’s New in Cisco Product Documentation at: http://www.cisco.com/c/en/us/td/docs/general/whatsnew/whatsnew.html.
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Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.
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