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Release Notes for Cisco ASR 901 Series Aggregation Services Router for CiscoIOSRelease15.5(3)S7
System Specifications and Memory Details
Determining the Software Version
New Hardware Features in Release 15.5(3)S7
New Software Features in Release 15.5(3)S7
Modified Software Features in Release 15.5(3)S7
Obtaining Documentation and Submitting a Service Request
First Published Date: August 8, 2018
This release notes is for the Cisco ASR 901 Series Aggregation Services Router for Cisco IOS Release 15.5(3)S7 and contains the following sections:
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.
Table 3 lists the supported system configurations and memory details for the Cisco ASR 901 router:
Cisco ASR 901 Series Aggregation Services Router TDM version
Cisco ASR 901 Series Aggregation Services Router, Ethernet version
Cisco ASR 901 Series Aggregation Services Router, IPsec enabled Ethernet 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.
Table 4 and Table 5 shows the SFP modules supported on the Cisco ASR 901 routers:
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.
The Cisco ASR 901 router supports the following MIBs:
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:
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.
The are no open caveats for the Cisco ASR 901 router running Cisco IOS Release 15.5(3)S7.
This section provides information about the resolved caveats for the Cisco ASR 901 router running Cisco IOS Release 15.5(3)S7.
Multicast traffic is forwarded with corrupted MPLS header to LHR
Unable to delete "interface pseudowire" that is already configured
Priority police percent does not work after Port-channel member link flap
Classify slow path control protocol (untagged) frames into egress qos network control queue
DDR configuration and other timing parameter updates as MBE are reported with current parameters
ASR901 "ip cef accounting non-recursive" causes vlan-base EoMPLS/VPLS to break
ASR901:RLFA tLDP sessioin flapping for every 2 to 3 hours with sec image
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.
VLAN 1 Stops Passing Traffic After the Router Reload
This issue occurs when the following conditions are met:
Note VLAN 1 is reserved for internal purposes and it is not recommended to use a reserved VLAN for data traffic.
To work around this issue, delete the VRF that contains VLAN 1 and reconfigure the VLAN.
Documents related to the Cisco ASR 901 Series Aggregation Services Router include the following:
To access the related documentation on Cisco.com, go to:
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.
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