Simple Network Management Protocol; Selecting And Identifying The Dsc On Cisco Asr 9000 Series Routers - Cisco ASR 9000 Getting Started Manual
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Introduction to the Cisco ASR 9000 Series Aggregation Services Router
Simple Network Management Protocol
Simple Network Management Protocol (SNMP) is an application-layer protocol that facilitates the
exchange of management information between network devices. By using SNMP-transported data (such
as packets per second and network error rates), network administrators can manage network
performance, find and solve network problems, and plan for network growth.
The Cisco IOS XR software supports SNMP v1, v2c, and v3. SNMP is part of a larger architecture called
the Internet Network Management Framework (NMF), which is defined in Internet documents called
RFCs. The SNMPv1 NMF is defined by RFCs 1155, 1157, and 1212, and the SNMPv2 NMF is defined
by RFCs 1441 through 1452. For more information on SNMP v3, see RFC 2272 and 2273.
SNMP is a popular protocol for managing diverse commercial internetworks and those used in
universities and research organizations. SNMP-related standardization activity continues even as
vendors develop and release state-of-the-art, SNMP-based management applications. SNMP is a
relatively simple protocol, yet its feature set is sufficiently powerful to handle the difficult problems
presented in trying to manage the heterogeneous networks of today.
Selecting and Identifying the Active RSP
A designated shelf controller (DSC) is a role that is assigned to one route switch processor (RSP) card
in each router .
Throughout this guide, the term RSP is used to refer to the RSP cards supported on
Note
Cisco ASR 9000 Series Routers. If a feature or an issue applies to only one platform, the accompanying
text specifies the platform. The active RSP card acts as DSC in the system.
Although each router can have two RSP cards, only one can serve as the active RSP and control the
router. The active RSP provides system-wide administrative functions, including:
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The first step in setting up a new router is to select or identify the active RSP because the initial router
configuration takes place through the active RSP. The following section describes how to select and
identify the DSC on different routers:
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Selecting and Identifying the DSC on Cisco ASR 9000 Series Routers
A Cisco ASR 9000 Series Router supports up to two RSPs. If only one RSP is installed, that RSP
automatically becomes the active RSP. If two RSPs are installed, the default configuration selects RSP0
as the active RSP. To select RSP1 to become the active RSP for a new installation, install RSP1 first,
apply power to the system, and wait for RSP1 to start up. When the Primary LED on the RSP1 front
panel lights, RSP1 is operating as the active RSP, and you can install RSP0.
OL-28417-02
User configuration using a terminal connection or network connection
Distribution of software to each node in the router or system
Coordination of software versioning and configurations for all nodes in the router or system
Hardware inventory and environmental monitoring
Selecting and Identifying the DSC on Cisco ASR 9000 Series Routers, page 31
Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
Selecting and Identifying the Active RSP
121
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