Basic Dial NMS Implementation Guide
Table Of Contents
- Preface
- Overview of Basic SNMP Building Blocks
- Network Design for a DialNMSCase Study
- Dial MIBs and OIDs Used in the Case Study
- Task 1—Enabling SNMP in a Cisco IOS Device
- Task 2— Exploring SNMP Capabilities by Using UCD-SNMP
- Task 3—Using MRTG to Monitor and Graph Traffic Loads
- Task 4—Using Syslog, NTP, and Modem Call Records to Isolate and Troubleshoot Faults
- Task 5—Setting Up a Web Portal forthe DialNMS
- Task 6—Managing IP Addresses by Using DNS
- Task 7—Using HP OpenView to Create the SNMP Framework
- Task 8—Using CiscoWorks 2000 Resource Manager Essentials
Task 3Using MRTG to Monitor and Graph Traffic Loads
How to Inspect and Interpret Data
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Basic Dial NMS Implementation Guide
How to Inspect and Interpret Data
Internet users spend approximately 80 percent of their time reading information—not downloading
data. Modem traffic is very limited on a per user basis. People cannot read as fast as modems can
download. Therefore, watch for the following types of trends and performance data on the access
servers:
PPP sessions in use.
DS0s in use.
Modem calls that have been rejected.
The number of calls coming in to the access server and at what time.
Spikes or dips in total calls connected outside the normal call pattern.
Long-term trends that may mean that you need to upgrade components in your network.
Throughput that has been reduced to unacceptable levels (potential bottlenecks).
For disaster recovery purposes, when fail over events and routing swaps occur, look for drops in the
primary data path and jumps in the backup path.
The utilization of the IP backbone, such as a Frame Relay link or Ethernet campus.
Table 16 User Information OIDs
Variable Base MIB and OID
Description
Active user ID
CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.3
List of users currently connected
and authenticated.
Active call duration CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.8
Call durations for currently
connected and authenticated users.
User CLID CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.2
List of user Caller IDs (CLID).
DNIS phone number CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.13
List of called Dialed Number
Information Service (DNIS) phone
numbers.
Active TTY CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.14
List of asynchronous terminal lines
(TTY) in use.
Active modem slot CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.6
List of which user is using which
modem slot.
Active modem port CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.7
List of which user is using which
modem port.
Active user IP CISCO-MODEM-MGMT-MIB
.1.3.6.1.4.1.9.10.19.1.3.1.1.4
List of which IP addresses are
currently in use.