Monitoring the Arista Switch

eG Enterprise offerss a dedicated Arista Switch monitoring model which periodically checks the availability of the switch, the overload condition of the switch, the resource utilization etc, so that abnormalities can be detected before any irreparable damage occurs.

Figure 1 : The layer model of the Arista Switch

Every layer of Figure 1 is mapped to a variety of tests which connect to the SNMP MIB of the target Arista Switch as well as connect to the switch via SSH to collect critical statistics pertaining to its performance. The metrics reported by these tests enable administrators to answer the following questions:

  • Is the switch available over the network? If so, how quickly is it responding to requests?

  • Was any CPU contention noticed on the switch? What caused this contention – resource-hungry user processes? CPU-intensive system processes? Or low-priority (Nice) jobs?

  • Is the switch consuming memory excessively?

  • Is the processing load on the switch abnormally high? Did the load increase suddenly or steadily?

  • Were any erratic fluctuations observed in the temperature of the switch?

  • Has any PSU failed? If so, which one?

  • Has any temperature sensor registered an abnormally high temperature? If so, which one is it?

  • Is any fan unavailable?

  • Is the airflow on the fans optimal?

  • Is the temperature of any fan abnormal?

The tests associated with each layer are discussed in detail in the following sections.