Configuring SNMP and MIB Support

This chapter describes how to configure Simple Network Management Protocol (SNMP) and Management Information Base (MIB) support for the Cisco RFGW-10. It includes the following sections:

Downloading and Compiling MIBs

The following sections provide information about how to download and compile MIBs for the Cisco RFGW-10:

Considerations for Working with MIBs

While working with MIBs, consider the following:

  • Mismatches on datatype definitions might cause compiler errors or warning messages. For example, the OLD-CISCO-CPU-MIB, OLD-CISCO-MEMORY-MIB, and OLD-CISCO-SYSTEM-MIB each define the following OID differently:
OLD-CISCO-CPU-MIB.my
1cpu OBJECT IDENTIFIER ::= {local 1 }
 
OLD-CISCO-MEMORY-MIB.my
1env OBJECT IDENTIFIER ::= {local 1 }
 

To eliminate MIB compiler errors or warning messages for mismatched definitions, edit one of the MIB definitions to match the other. Other types of mismatches include:

MIB A
Datatype1 ::= INTEGER(0...100)
Datatype2 ::= INTEGER(1...50)
 
MIB B
Datatype1 ::= DisplayString
Datatype2 ::= OCTET STRING (SIZE(0...255))
 
  • Many MIBs import definitions from other MIBs. If your management application requires MIBs to be loaded, and you experience problems with undefined objects, try loading the following MIBs in this order:

SNMPv2-SMI.my
SNMPv2-TC.my
SNMPv2-MIB.my
RFC1213-MIB.my
IF-MIB.my
CISCO-SMI.my
CISCO-PRODUCTS-MIB.my
CISCO-TC.my

Downloading MIBs

To download the MIBs onto your system, if they are not already there, use the following procedure:

Step 1 Go to the Cisco MIB Tools page at the following URL:

http://tools.cisco.com/ITDIT/MIBS/servlet/index

If the MIB you want to download is not there, try one of the URLs in Step 4 .

Step 2 Click the link for the MIB Locator tool.

Step 3 You can use the MIB Locator tool to show a particular MIB or to show all MIBs for a particular platform or for a particular software release.

Step 4 You can also download industry-standard MIBs from the following URLs:

 

Compiling MIBs

If you plan to integrate the Cisco RFGW-10 with an SNMP-based management application, you must also compile the MIBs for that platform. Some SNMP managers do this automatically when you place all of the MIBs in a specific location, while others require you to do this manually. For instructions, see the documentation for that particular manager.

Enabling SNMP Support

The following procedure summarizes how to configure the Cisco RFGW-10 for SNMP support. Note that these basic configuration commands are issued for SNMPv2c. For SNMPv3, you must also set up SNMP users and groups.

Step 1 Set up your basic SNMP configuration through the command-line interface (CLI). (For command and setup information, see the list of documents that follows this procedure.)

Step 2 Define SNMP read-only and read-write communities:

RFGW-10(config)# snmp-server community Read_Only_Community_Name ro
RFGW-10(config)# snmp-server community Read_Write_Community_Name rw
 
 

Step 3 Configure SNMP views (to limit the range of objects accessible to different SNMP user groups):

RFGW-10(config)# snmp-server view view_name oid-tree {included | excluded}
 
 

Step 4 If you plan to enable a number of traps, especially if you plan to enable traps for SYSLOG events and alarms, increase the trap queue size from its default of 10:

RFGW-10(config)# snmp-server queue-length queue-size
 
 

The value of queue-size can range from 1 to 1000 traps. We recommend a size of at least 100 for systems that are sending traps for SYSLOG events. The default is 10.

Step 5 See the “Enabling Notifications” section for information on how to enable traps.

 

For detailed information about SNMP commands, see the following Cisco documents:

  • “System Management” section of the Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.2

Note This document has reached End of Life. For more information, see the following End-of-Life Announcement at the following URL: http://www.cisco.com/en/US/docs/ios/redirect/eol.html

Video Specific MIBs

Cisco IOS Release 12.2(44)SQ release defines the two MIBs, SCTE-HMS-MPEG-MIB and SCTE-HMS-QAM-MIB, to extract the video management object model from MPEG technology. These MIBs provide the functionality to manage:

  • MPEG characteristics of input and output transport stream, program stream, and elementary stream.
  • Video related statistics.
  • QAM configurations for video devices.

These MIBs support various video applications such as Video on Demand, Switched Digital Video, and Digital Broadcast.

DOCSIS and M-CMTS Specific MIBs

Cisco IOS Release 12.2(44)SQ supports several MIBs on the Cisco RFGW-10 for DOCSIS and M-CMTS:

  • DOCS-IF-MIB
  • DOCS-IF-M-CMTS-MIB
  • DTI-MIB
  • DOCS-CABLE-DEVICE-MIB
  • ENTITY-MIB,IF-MIB

Using the Cisco MIB Locator

To locate and download MIBs for selected platforms, Cisco IOS and IOS-XE releases, and feature sets, use the Cisco MIB Locator found at the following URL:

http://tools.cisco.com/ITDIT/MIBS/servlet/index

To access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:

https://tools.cisco.com/RPF/register/register.do