Provides instructions for generating notifications based on bandwidth utilization reference values, enabling proactive network monitoring and alerting.
To receive notifications when the traffic bandwidth exceeds 85% utilization, configure reference values for both upstream (transmitted) and downstream (received) traffic. These values act as thresholds for generating the interface bandwidth events. The range is from 1 and 2,147,483,647 kbps.
The device samples the interface traffic each 10 seconds. If the received or transmitted bandwidth exceeds 85 percent of the configured value in 85 percent of the sampled intervals in a continuous 5-minute period, the device generates an SNMP trap. After the first trap is generated, sampling continues at the same frequency, but notifications are rate-limited to once per hour. A second trap is sent, and subsequent traps are sent, if the bandwidth exceeds 85 percent of the value in 85 percent of the 10-second sampling intervals over the next 1-hour period. If, after 1 hour, the device does not send another SNMP trap, the notification interval reverts to 5 minutes.
The upstream bandwidth and downstream bandwidth settings are solely for monitoring purposes and do not impose a bandwidth limit on the traffic. For example, in some network configurations, the full bandwidth of an interface may not be available. To ensure that utilization values reflect the available network bandwidth, set bandwidth utilization reference values lower than an interface's full speed.
You can verify the configured upstream and downstream bandwidth values using the show interface detail command, which displays the upstream bandwidth (tx-kbps) and downstream bandwidth (rx-kbps) fields usage.
You can monitor transport circuit bandwidth on Cisco IOS XE Catalyst SD-WAN devices and on Cisco SD-WAN Manager.