Release Notes for Cisco ASR 901S Series Aggregation Services Router for Cisco IOS Release 15.4(2)S
This release notes is for the Cisco ASR 901S Series Aggregation Services Router for Cisco IOS Release 15.4(2)S and contains the following sections:
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
4 external SFP ports + 1 gland interface for internal ports
3 external SFP ports + 1 external copper (Cu) port + 1 gland interface for internal ports
2 external SFP ports + 2 external Cu ports + 1 gland interface for internal ports
3 external SFP ports + 1 gland interface for internal ports, 1 sec holdover for 1 power over Ethernet plus (POE+)
2 external SFP ports + 1 external Cu port + 1 gland interface for internal ports, 1 sec holdover for 1 POE+
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 sh ver command in the EXEC mode:Router#show version Cisco IOS Software, 901 Software (ASR901-UNIVERSALK9-M), Version 15.4(2)S, RELEASE SOFTWARE (fc2) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2014 by Cisco Systems, Inc. Compiled Wed 26-Mar-14 10:57 by prod_rel_team ROM: System Bootstrap, Version 15.4(2r)S2, RELEASE SOFTWARE (fc1) Router uptime is 5 minutes System returned to ROM by power-on System restarted at 06:49:35 UTC Thu Mar 27 2014 System image file is "flash:xe312_FC2" 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 email@example.com. License Level: IPBase License Type: Default. No valid license found. Next reload license Level: IPBase Cisco A901S-3SG-F-AH (P2020) processor (revision 1.0) with 393216K/131072K bytes of memory. Processor board ID FOC1804N21F P2020 CPU at 800MHz, E500v2 core, 512KB L2 Cache 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
New Hardware Features in Release 15.4(2)SThe following hardware features are supported on the A901S-2SG-F-AH and A901S-3SG-F-AH router chassis models of the ASR 901S Series Aggregation Services Routers:
- Two or three optical GE ports
- One or two Cu (10/100/1000BASE-T) PoE ports with one port supporting 1 second holdover
- One Management Fast Ethernet port.
- One console port
- One alarm port with four dry-alarm inputs
- Three LEDs (System, Management, and Network status)
The LEDs may be turned off using the Cisco IOS CLI.
- Wi-Fi interface
There is no software support provided for the Wi-Fi interface in Cisco IOS Release 15.4(2)S.
- Built-in power back-up to ride through short term outages of less than one second
- Zero Touch Provisioning (ZTP) reset button
- Fan-less passively-cooled design
- AC input option
- IP-65 and Type 4X compliant, sealed enclosure designed for outdoor deployment
- Mechanical mounting options to enable mounting on side walls, lamp posts, and telephone poles
For information about these feature, see the Cisco ASR 901S Series Aggregation Services Router Hardware Installation Guide.
New Software Features in Release 15.4(2)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(2), see Release Notes for Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.4(2)S.
The following new feature is supported on the ASR 901S router:
Power over Ethernet
Effective with Cisco IOS Release 15.4(2)S, support was provided for Power over Ethernet (PoE) on the FA chassis models of the Cisco ASR 901S router. PoE can be enabled or disabled using the Cisco IOS CLI.
For more information about this feature, see Configuring Power over Ethernet in the Cisco ASR 901S Series Aggregation Services Router Software Configuration Guide.
Limitations and Restrictions
Cisco IOS Release 15.4(2)S for the Cisco ASR 901S Series Aggregation Services Router has the following limitations and restrictions:
- 1 pps interface, 10 MHz, ToD, and T1/E1 timing are not supported .
- ACL-based QoS is limited to source and destination IP addresses. Extended ACLs with extended options like DSCP, fragments, option, precedence, time-range, ToS, and TTL are not supported.
- Time-division multiplexing (TDM) psuedowire over TE-FRR is not supported.
- Ethertype tag is not supported in Cisco QinQ tunnel and with service provider VLAN (S-VLAN).
- For ITU-T Y.1731 Performance Monitoring, Loss Measurement Message (LMM) is not supported.
- IEEE 1588-2008 Peer-to-Peer Transparent clock and IEEE 1588-2008 End-to-End transparent clock are not supported.
- Wi-Fi interface is not supported.
- PoE does not support: power inline auto, power negotiation, and power budgeting features on the PoE ports.
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 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.
This section provides information about the open caveats for the Cisco ASR 901S router running Cisco IOS Release 15.4(2)S.
While running the show power inline gig 0/4(0/5) detail command on the ASR 901S FA router, the Power over Ethernet (PoE) counters do not get updated.
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 !!
Unable to set the pethPsePortPowerPriority of the PoE port from high (2) to low (3) on the ASR 901S FA router.
show power inline command output does not display the powered device (PD) when the Cisco IP phone is connected.
show power inline command output does not display which of the PoE ports are configured as "high" priority and "low" priority.
When out-of-range current is greater than 650 mA for class 0 set for the PD, the ASR 901S FA router wrongly shows PD as connected.
show power inline command output does not display the used and remaining power on the PoE port of the ASR 901S router.
This section provides information about the resolved caveats for the Cisco ASR 901S router running Cisco IOS Release 15.4(2)S.
ASR 901S OBFL is not updated based on its voltage and temperature sensor data.
Using the show inventory command on the ASR 901S FA router does not display the complete output.
The motherboard DESCR name of the ASR 901S FD router with PIDs A901S-2SG-F-D and A901S-3SG-F-D is displayed as built-in 3 external ports instead of built-in 4 external ports.
Unable to disable Power over Ethernet (PoE) debugs using the undebug all command.
When booting the ASR 901S router, the MCU version shows 255.255 after upgrade to weekly mcp dev.
The cpeExtPsePortDiscoverMode and cpeExtPsePortDeviceDetected MIBs show incorrect values on the ASR 901S router.
When the powered device (PD) tries to draw over current, the ASR 901S FA router goes to faulty state.
Incorrect system log message seen on the ASR 901S FA router: %ENVM-1-OVERTEMP: System detected OVERTEMPERATURE CPU temperature 84 Degc condition.
When the ZTP button on the ASR 901S router is pressed for a short duration, system log messages are not displayed.
When reloading the ASR 901S FD router with a corrupted image, it displays this unexpected error message: "I2C slave device not found num 1, addr 0x4eError in pura_setioexpander_default"
The ASR 901S FA router does not display the required logs at 70 degree centigrade during Power Over Ethernet (PoE) 1 second feature test.
When the ZTP button is pressed, the ASR 901S router resets with the reload reason shown as "power on".
The network status LED on the ASR 901S is "orange" even when the fa0/0 port is not connected.
The management status LED on the ASR 901S router switches off while Cisco IOS boot is in progress.
External alarms are triggering contradictory to the way they are configured.
After erasing NVRAM and reloading the ASR 901S router, the following syslog message was observed during reload: "Invalid I2C device id: 33"
While inserting or removing SFPs on the ASR 901S router, the following error message is displayed: "Error not a valid interface".
Network LED on the ASR 901S router is displaying "green" after reload without management connectivity.
facility-alarm command for setting temperature threshold value for different temperature sensors show incorrect information.
The Alarm type on the ASR 901S router needs to be changed to "Trigger type" for 0-1 selection for triggering alarms.
Powercyle during ROMMON auto upgrade or downgrade, show mon command output displays junk characters continuously at the ROMMON prompt.
The following sections describe troubleshooting commands you can use with the Cisco ASR 901S Series Aggregation Services Router.
Collecting Data for Router Issues
Collecting Data for ROMMON IssuesTo collect data for ROMMON issues, issue the following command while in the EXEC mode:
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.
- 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
- Release Notes for Cisco ASR 901S Series Aggregation Services Router for Cisco IOS Release 15.4(2)S
To access the related documentation on Cisco.com, go to:
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.
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