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Updated:September 30, 2019
Bias-Free Language
The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.
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 1 Cisco ASR 901 1G Router Models
Power Source
TDM + Ethernet Version
Ethernet Version
DC Power
A901-12C-FT-D
A901-4C-FT-D
A901-12C-F-D
A901-4C-F-D
AC Power
none
none
Table 2 lists the Cisco ASR 901 10G Router model versions.
Table 2 Cisco ASR 901 10G Router Models
Power Source
TDM + Ethernet Version
Ethernet Version
DC Power
A901-6CZ-FT-D
A901-6CZ-F-D
A901-6CZ-FS-D
AC Power
A901-6CZ-FT-A
A901-6CZ-F-A
A901-6CZ-FS-A
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:
Cisco ASR 901 Series Aggregation Services Router TDM version
asr901-universalk9-mz
128 MB
512 MB
RAM
Cisco ASR 901 Series Aggregation Services Router, Ethernet version
asr901-universalk9-mz
128 MB
512 MB
RAM
Cisco ASR 901 Series Aggregation Services Router, IPsec enabled Ethernet version
asr901sec-universalk9.mz
256 MB
512 MB
RAM
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 Cisco ASR 901 router supports the following MIBs:
BGP4-MIB
CISCO-STP-EXTENSIONS-MIB
BRIDGE-MIB
CISCO-SYSLOG-MIB
CISCO-ACCESSENVMON-MIB
CISCO-TC
CISCO-CAR-MIB
ENTITY-MIB
CISCO-CDP-MIB
ETHERLIKE-MIB
CISCO-CEF-MIB
HCNUM-TC
CISCO-CLASS-BASED-QOS-MIB
IANAifType-MIB
CISCO-CONFIG-COPY-MIB
IEEE8021-CFM-MIB
CISCO-CONFIG-MAN-MIB
IF-MIB
CISCO-DATA-COLLECTION-MIB
IMA-MIB
CISCO-DOT3-OAM-MIB
INT-SERVE-MIB
CISCO-EIGRP-MIB
IP-FORWARD-MIB
CISCO-ENHANCED-MEMPOOL-MIB
IP-MIB
CISCO-ENTITY-ALARM-MIB
MPLS-LDP-MIB
CISCO-ENTITY-ASSET-MIB
MPLS-LSR-MIB
CISCO-ENTITY-VENDORTYPE-OID-MIB
MPLS-VPN-MIB
CISCO-ENVMON-MIB
NOTIFICATION-LOG-MIB
CISCO-FLASH-MIB
OLD-CISCO-CHASSIS-MIB
CISCO-IETF-PW-MIB
OLD-CISCO-FLASH-MIB
CISCO-IETF-PW-TC-MIB
OLD-CISCO-INTERFACES-MIB
CISCO-IF-EXTENSION-MIB
OLD-CISCO-IP-MIB
CISCO-IMAGE-MIB
OLD-CISCO-SYS-MIB
CISCO-IPSLA-ETHERNETMIB
OLD-CISCO-TS-MIB
CISCO-MEMORY-POOL-MIB
OSPF-MIB
CISCO-NETSYNC-MIB
OSPFv3-MIB
CISCO-NTP-MIB
PerfHist-TC-MIB
CISCO-OSPF-MIB
RFC1213-MIB
CISCO-PING-MIB
RMON2-MIB
CISCO-PROCESS-MIB
RMON-MIB
CISCO-PRODUCTS-MIB
SNMP-FRAMEWORKMIB
CISCO-PTP-MIB
SNMP-TARGET-MIB
CISCO-QUEUE-MIB
SNMPv2-MIB
CISCO-RESILIENT-ETHERNET-PROTOCOL-MIB
SNMPv2-SMI
CISCO-RTTMON-MIB
SNMPV2-TC
CISCO-SENSOR-ENTITY-MIB
TCP-MIB
CISCO-SMI-MIB
UDP-MIB
CISCO-SNAPSHOT-MIB
CISCO-IPSEC-FLOW-MONITOR-MIB
CISCO-SNMP-TARGET-EXT-MIB
CISCO-IPSEC-MIB
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.
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.
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
There are no open caveats for the Cisco ASR 901 router running Cisco IOS Release 15.6(2)SP7.
Resolved Caveats
This section provides information about the resolved caveats for the Cisco ASR 901 router running Cisco IOS Release 15.6(2)SP7.
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Cisco Bug Search Tool
Cisco Bug Search Tool (BST) is a web-based tool that acts as a gateway to the Cisco bug tracking system that maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. BST provides you with detailed defect information about your products and software.
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Any 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.