Contents

• Release Notes for Cisco ASR 901S Series Aggregation Services Router for Cisco IOS Release 15.4(3)S
• Introduction
• System Specifications
• Determining the Software Version
• New and Changed Information
• New Hardware Features in Release 15.4(3)S
• New Software Features in Release 15.4(3)S
• Wi-Fi Management Interface
• IP Security
• Caveats
• Bug Search Tool
• Open Caveats
• Resolved Caveats
• Troubleshooting
• Related Documentation
• Services and Support

Release Notes for Cisco ASR 901S Series Aggregation Services Router for Cisco IOS Release 15.4(3)S

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This release notes is for the Cisco ASR 901S Series Aggregation Services Router for Cisco IOS Release 15.4(3)S and contains the following sections:

• Introduction
• System Specifications
• Determining the Software Version
• New and Changed Information
• Caveats
• Troubleshooting
• Related Documentation
• Services and Support

Introduction

The Cisco ASR 901S Series Aggregation Services Routers are a family of small cell routers designed to support backhaul in deployment of small cell radios. The ASR 901S routers are small-form-factor, environmentally hardened (IP65 rated), low power, and cost effective. They complement the Cisco ASR 901 as part of the Cisco end-to-end mobile backhaul solution and transparently integrate into existing operational environments. A Cisco ASR 901S router prioritizes and processes small cell-site voice, data, and signaling traffic as part of the Cisco Unified RAN Backhaul solution for reliable transport across any available backhaul networks.

The ASR 901S routers can be installed in the outside plant (OSP) without an enclosure. These routers can be easily deployed in challenging locations such as on lamp posts, telephone poles, and sides of walls. By using the Cisco ASR 901S, operators can reduce backhaul operating costs, simplify deployment and provisioning, and enhance their profit opportunities with premium mobile and Ethernet services.

The following table lists the Cisco ASR 901S router chassis models.

Table 1 Cisco ASR 901S Router Models

Chassis Product ID	Description	Power Source
A901S-4SG-F-D	4 external SFP ports + 1 gland interface for internal ports	DC power
A901S-3SG-F-D	3 external SFP ports + 1 external copper (Cu) port + 1 gland interface for internal ports	DC power
A901S-2SG-F-D	2 external SFP ports + 2 external Cu ports + 1 gland interface for internal ports	DC power
A901S-3SG-F-AH	3 external SFP ports + 1 gland interface for internal ports, 1 sec holdover for 1 power over Ethernet plus (POE+)	AC power
A901S-2SG-F-AH	2 external SFP ports + 1 external Cu port + 1 gland interface for internal ports, 1 sec holdover for 1 POE+	AC power

System Specifications

Table 2 Cisco IOS Release 15.4(2)S System Configuration and Memory Details

Platform	Software Image	Flash Memory	DRAM Memory	Runs From
A901S-4SG-F-D	asr901-universalk9-mz	128 MB	512 MB	RAM
A901S-3SG-F-D
A901S-2SG-F-D
A901S-2SG-F-AH
A901S-3SG-F-AH

Determining the Software Version

To determine the image and version of Cisco IOS software running on your Cisco ASR 901S FA router, log in to the router and enter the show version command in the EXEC mode:

Router#show version
Cisco IOS Software, 901 Software (ASR901-UNIVERSALK9-M), Version 15.4(3)S, RELEASE SOFTWARE (fc3)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Sun 27-Jul-14 12:26 by prod_rel_team

ROM: System Bootstrap, Version 15.4(3r)S3, RELEASE SOFTWARE (fc1)

AGORA uptime is 2 minutes
System returned to ROM by power-on
System restarted at 17:54:29 UTC Wed Jul 30 2014
System image file is "tftp://202.153.144.25//auto/tftpboot/jvaruvel/3.13/asr901-universalk9-mz.154-3.S.bin"
Last reload reason: Reload Command



This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

License Level: AdvancedMetroIPAccess
License Type: Permanent
Next reload license Level: AdvancedMetroIPAccess

Cisco A901S-4SG-F-D (P2020) processor (revision 1.0) with 393216K/131072K bytes of memory.
Processor board ID FOC1738N74Q
P2020 CPU at 800MHz, E500v2 core, 512KB L2 Cache
1 WiFi management interface
1 External Alarm interface
1 FastEthernet interface
6 Gigabit Ethernet interfaces
1 terminal line
256K bytes of non-volatile configuration memory.
98304K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

Router#

New and Changed Information

The following sections list the hardware and software features supported by the Cisco ASR 901S router.

• New Hardware Features in Release 15.4(3)S
• New Software Features in Release 15.4(3)S

New Hardware Features in Release 15.4(3)S

There are no new hardware features in Cisco IOS Release 15.4(3)S.

New Software Features in Release 15.4(3)S

The Cisco ASR 901S router supports a majority of the software features supported on the Cisco ASR 901 routers. For information about the new Cisco ASR 901 features for Cisco IOS Release 15.4(3), see Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.4(3)S.

The following new feature is supported on the ASR 901S router:

• Wi-Fi Management Interface
• IP Security

Wi-Fi Management Interface

Effective with Cisco IOS Release 15.4(3)S, support was provided for the Wi-Fi management interface on the Cisco ASR 901S router. The Wi-Fi management interface can be disabled or enabled using the Cisco IOS CLIs.

For more information about this feature, see Configuring the Wi-Fi Management Interface in the Cisco ASR 901S Series Aggregation Services Router Software Configuration Guide.

IP Security

The IP Security feature enables you to configure the Internet Key Exchange (IKE) protocol for basic IP Security (IPsec) Virtual Private Networks (VPNs). IKE is a key management protocol standard that is used in conjunction with the IPsec standard. IPsec is an IP security feature that provides robust authentication and encryption of IP packets.

For more information about this feature, see the IP Security feature guide at the following URL: IP Security in the Cisco ASR 901S 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
• Open Caveats
• Resolved Caveats

Note	Only ASR 901S-specific caveats are covered in this section. For a complete list of caveats, see the Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.4(3)S.

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 www.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 901S router running Cisco IOS Release 15.4(3)S.

Bug ID	Description
CSCup09876	When unsupported SFP is inserted a error message indicating module disabled, NOT_SUPPORTED is displayed as expected. However, while removing the SFP, i2c slave device not found error messages is seen.
CSCui52695	When plugging in and plugging out the cable multiple times on the PoE ports, the following console log is seen on the ASR 901S FA router: ERR:I2C while i2c write @reg_addr 2A !!
CSCuj60138	Network LED is switched OFF with line protocol down at fa0/0 port.
CSCul17479	'sh env' output is taking approximately 1 minute to update after reload.

Resolved Caveats

This section provides information about the resolved caveats for the Cisco ASR 901S router running Cisco IOS Release 15.4(3)S.

Bug ID	Description
CSCug99371	Continuous traceback and CPU hog messages are seen on the Cisco ASR 901S router on loading unsupported software image.
CSCul17492	Cisco ASR 901S router reloads when booted up with Cisco IOS Release 15.3(3)S image.
CSCul17506	'no service password recovery' does not function properly on the Cisco ASR 901S router.
CSCul38252	Boot failed on the Cisco ASR 901S router when loaded with the Cisco IOS XE 3.11 image due to extra space character in the PID.
CSCun33030	Power cycle during write memory operation falls back to the default configuration mode on the ASR 901S router.
CSCun45365	Network LED should also function as per Wi-Fi management interface port status.

Troubleshooting

The following sections describe troubleshooting commands you can use with the Cisco ASR 901S Series Aggregation Services Router.

Collecting Data for Router Issues

To collect data for reporting router issues, issue the following command:

• show tech-support --Displays general information about the router if it reports a problem.

Collecting Data for ROMMON Issues

To collect data for ROMMON issues, issue the following command while in the EXEC mode:

• show rom-monitor--Displays currently selected ROM monitor.

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

• Cisco ASR 901S Series Aggregation Services Router Hardware Installation Guide
• Cisco ASR 901S Series Aggregation Services Router Software Configuration Guide
• Cisco ASR 901S Series Aggregation Services Router Command Reference Guide
• Regulatory Compliance and Safety Information for Cisco ASR 901S Series Aggregation Services Routers

To access the related documentation on Cisco.com, go to:

http:/​/​www.cisco.com/​en/​US/​products/​ps12890/​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.

Notices

Copyright © 2014, Cisco Systems, Inc. All rights reserved.