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Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Chapter 1 Getting Started on the Cisco CRS-1 Router
File Storage
Simple Network Management Protocol
Simple Network Management Protocol (SNMP) is an application-layer protocol designed to facilitate
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 more easily manage
network performance, find and solve network problems, and plan for network growth.
Two versions of SNMP exist: Version 1 and Version 2. Most of the changes introduced in Version 2
increase the security capability of SNMP. Other changes increase interoperability by more rigorously
defining the specifications for SNMP implementation. 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.
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 today's heterogeneous networks.
See the “Related Documents” section on page xii for more information on SNMP documentation.
File Storage
Figure 1-8 shows where files are stored on the RP for the Cisco CRS-1 16-Slot Line Card Chassis. The
RP for the Cisco CRS-1 8-Slot Line Card Chassis is similar and is shown in Figure 1-6.
The following sections contain information on the file storage options:
• Sandisk Flash Disks, page 1-12
• Hard Disk, page 1-13
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