What is this?

This knowledgebase contains questions and answers about PRTG Network Monitor and network monitoring in general.

Learn more

PRTG Network Monitor

Intuitive to Use. Easy to manage.
More than 500,000 users rely on Paessler PRTG every day. Find out how you can reduce cost, increase QoS and ease planning, as well.

Free Download

Top Tags


View all Tags

Cisco 3850 Port-channels not detected

Votes:

0

I've recently replaced my cisco 3750 switches with Cisco 3850, and now PRTG won't detect Port-Channels, has anyone come across this?

3850 channel port

Created on Feb 21, 2016 12:55:26 PM



1 Reply

Votes:

0

The Port-Channel is a proprietary technology from Cisco, different vendors (or somethimes different devices even) will have different ways of reporting this data via SNMP:

  • In some cases you may see the interface listed(When using Add Sensor > SNMP Traffic Sensor) but you may find out that the interface doesn't provide traffic counters, thus the bandwidth is always 0 bytes/sec.
  • In other cases, the port-channel may not even be listed when using the "Add Sensor > SNMP Traffic" dialog.

What you can do to workaround this is is monitor the physical interfaces (for traffic) and use a Sensor Factory Sensor to aggregate the data from multiple sensors.

You may also experience similar issues regarding the monitoring of VLAN-interfaces, they also behave differently based on each vendor's implementation.

Best Regards,

Created on Feb 23, 2016 1:59:44 PM by Luciano Lingnau [Paessler]




Disclaimer: The information in the Paessler Knowledge Base comes without warranty of any kind. Use at your own risk. Before applying any instructions please exercise proper system administrator housekeeping. You must make sure that a proper backup of all your data is available.