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Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 1 Cisco ASR 901 Router Overview
Features
• Forwarding of Layer 2 and Layer 3 packets at Gigabit line rate.
Management Options
• CLI—You can access the CLI either by connecting your management station directly to the router
console port or by using Telnet from a remote management station. For more information about the
CLI, see Chapter 5, “Using the Command-Line Interface.”
• Cisco Configuration Engine—The Cisco Configuration Engine is a network management device that
works with embedded Cisco IOS CNS Agents in the Cisco ASR 901 Series Aggregation Services
Router software. You can automate initial configurations and configuration updates by generating
router-specific configuration changes, sending them to the router, executing the configuration
change, and logging the results.
• SNMP—SNMP management applications such as CiscoWorks2000 LAN Management Suite (LMS)
and HP OpenView. You can manage from an SNMP-compatible management station that is running
platforms such as HP OpenView or SunNet Manager.
For information about configuring SNMP, see
http://www.cisco.com/en/US/docs/ios/12_2/configfun/configuration/guide/fcf014.html.
For the list of MIBs that Cisco ASR 901 router supports, see the Release Notes for Cisco ASR 901
router.
Manageability Features
• Address Resolution Protocol (ARP) for identifying a router through its IP address and its
corresponding MAC address
• Cisco Discovery Protocol (CDP) Versions 1 and 2 for network topology discovery and mapping
between the router and other Cisco devices on the network (supported on NNIs by default, can be
enabled on ENIs, not supported on UNIs)
• Network Time Protocol (NTP) for providing a consistent time stamp to all routers from an external
source
• Cisco IOS File System (IFS) for providing a single interface to all file systems that the Cisco ASR
901 Series Aggregation Services Router uses.
• In-band management access for up to 5 simultaneous Telnet connections for multiple CLI-based
sessions over the network. Effective with Cisco IOS Release 15.3(2)S1, in-band management access
for up to 98 simultaneous Telnet connections for multiple CLI-based sessions over the network.
• In-band management access for up to five simultaneous, encrypted Secure Shell (SSH) connections
for multiple CLI-based sessions over the network.
• In-band management access through SNMP Versions 1 and 2c get and set requests.
• Out-of-band management access through the router console port to a directly attached terminal or
to a remote terminal through a serial connection or a modem
• User-defined command macros for creating custom router configurations for simplified deployment
across multiple routers
• Support for metro Ethernet operation, administration, and maintenance (OAM) IEEE 802.1ag
Connectivity Fault Management (CFM), Ethernet Line Management Interface (E-LMI) on
customer-edge and provider-edge devices, and IEEE 802.3ah Ethernet OAM discovery, link