Detect Cisco device interface linkdown

[Shirai]

Hi

I am using the Generic Cisco Device Extension to monitor Cisco devices. I am planning to use a metric event to detect interface link downs. I thought I could achieve this by monitoring the metric "com.dynatrace.extension.network_device.if.status", but the value of this metric is always 1, and Link Up/Down is defined as a dimension. Is it possible to use this metric to detect link downs as a metric event?

[p_devulapalli]

@Shirai You can use these 

• Key: oper.status

  Usage: The operational state of the interface (up/down/etc.).

• Key: admin.status

  Usage: The admin state of the interface (up/down/etc.).

[Shirai]

@p_devulapalli-san. Thanks for the reply.

I understand that oper.status indicates Link up/down, but I don't know how to define a change in oper.status as a metric event.

I tried the metric event setting screen below, but I was unable to set "oper.status" in the Metric key field.

[p_devulapalli · Accepted solution]

@Shirai You can use the Dimension Filter along with monitoring strategy to set the threshold , please see below example 

[Shirai]

@p_devulapalli 

Let me ask a few more questions. In the configuration you provided, the Dimension value is set to "up(1)". In this case, will it detect a link up or a link down?