Troubleshooting Router Graphs

In some cases, the router graphs (and their corresponding monitors) may experience stagnant data collection. Below are the cause and troubleshooting methods to rectify the same.

Widgets not displaying data under the 'Router Graphs' tab

Cause: Every graph will need a particular set of performance monitors to be associated with the device. The data collected by these monitors are collectively displayed in the corresponding graphs. If the respective monitors are not associated or if there is no data collection in that particular monitor, the graphs will not display any data.

Solution:

  1. In OpManager, router graphs are specific only to Cisco devices. Below is a list of graphs and the corresponding monitors they require in order to display the necessary data. Check if these performance monitors are properly associated.
  2. Graph name Mandatory Performance monitors
    Buffer Hits Medium Buffer Hits
    Big Buffer Hits
    Total Large Buffer Hits
    Total Huge Buffer Hits
    Buffer Misses Small Buffer Misses
    Medium Buffer Misses
    Big Buffer Misses
    Total Large Buffer Misses
    Total Huge Buffer Misses
    Buffer Failures Buffer Create Failures
    Cisco Memory Utilization Cisco Memory Utilization
    Router CPU utilization CPU Usage (5 mins avg)

  3. Check if data collection is properly conducted at all the associated monitors. If not, query the device and check if it responds to the OIDs listed below.
  4. Graph OID
    Buffer Hits .1.3.6.1.4.1.9.2.1.18.0
    Medium Buffer Hits .1.3.6.1.4.1.9.2.1.26.0
    Big Buffer Hits .1.3.6.1.4.1.9.2.1.34.0
    Large Buffer Hits .1.3.6.1.4.1.9.2.1.42.0
    Huge Buffer Hits .1.3.6.1.4.1.9.2.1.66.0
    Small Buffer Misses .1.3.6.1.4.1.9.2.1.19.0
    Medium Buffer Misses .1.3.6.1.4.1.9.2.1.27.0
    Big Buffer Misses .1.3.6.1.4.1.9.2.1.35.0
    Large Buffer Misses .1.3.6.1.4.1.9.2.1.43.0
    Huge Buffer Misses .1.3.6.1.4.1.9.2.1.67.0
    Buffer Failures .1.3.6.1.4.1.9.2.1.46.0
    Cpu Usage %
    (RouterCPUUtilization)
    .1.3.6.1.4.1.9.2.1.58.0
    Memory Utilization %
    (CiscoMemoryUtilization)
    (.1.3.6.1.4.1.9.9.48.1.1.1.5.1*100)/(.1.3.6.1.4.1.9.9.48.1.1.1.5.1+.1.3.6.1.4.1.9.9.48.1.1.1.6.1)