ethernet loopback plug gives cisco power error

With all switches powered off and links disconnected, connect the switches together via stacking cables in a ring topology (as shown in the following image).

Stacking Catalyst (MS390s / C9300-M / C9300X-M)įollow the steps below to setup a MS390/C9300/C9300X stack or watch Cisco Meraki MS390 Stack Setup Walkthrough video. If dashboard has already detected the correct stack under Detected potential stacks, click Provision this stack to automatically configure the stack.

Once the switches are done downloading and installing the firmware, their power LEDs will stay solid white or green.Ĥ. Configure the switch stack in dashboard.

The power LEDs on the front of each switch will blink during this process.

The switches may reboot during this process. Connect a single uplink from 1 switch of the stack. Power on all the switches, then wait several minutes for them to download the latest firmware and updates from dashboard. To create a full ring, start by connecting switch 1/stack port 1 to switch 2/stack port 2, then switch 2/stack port 1 to switch 3/stack port 2 and so forth, with the bottom switch connecting to the top switch to complete the ring.ģ. Do not configure the stack in dashboard yet. For that, you may follow Adding and Removing Devices from Dashboard Networks article. This can be a new dashboard network for these switches, or an existing network with other switches.

Add the switches into a dashboard network.

The steps below explain how to prepare a group of switches for physical stacking, how to stack them together, and how to configure the stack in dashboard. Physical Switch Stack Configuration Steps So you can easily manage all of your switches and get physical redundancy in the deployments that need it.

This switch does not have a stack configuration.Ĭisco Meraki switches allow you to configure anything from a single switch port to thousands of switch ports through our cloud-managed dashboard. In addition, Meraki switches now allow for physical stacking on select switch models.

This switch is not connected to a stack.

This switch's current stack members differ from the dashboard configuration.Switch Replacement Walkthrough for Stacks Bound to a Template.Replacing and Cloning a Stack Member Video.

Flexible Switch Stack Configuration Steps.Physical Switch Stack Configuration Steps.Since the informational logs on Cisco and Dlink do not provide any info on what device caused the Loopback error and the reason. There are no physical connection loops in our network.Īlso when we re-enable the ports from Error recovery settings page they start to work without needing any physical changes in our Network or on the switches whose ports were disabled. We are seeing frequent Loopback detect messages on Dlink and the Cisco switches and the ports get disabled. The switches are connected in Star Topology. Loopback detect, Spanning Tree State enabled and Link Flap Prevention are enabled. We have Cisco 350X and Dlink 1210-28 switches working together in our network.īoth these switches are inter-operating together and LACP is configured between them.

Ethernet loopback plug gives cisco power error