I do not know much about the filter but I do know that it took me forever to find a post on this. Pinging the local loopback address doesnt run a signal through the NIC it just checks the local computer. If you'd like a better explanation google DNE Lightweight Filter and do some research. and get errors, you need to reinstall TCP/IP. I do not understand the feature and cannot explain why it works.
For instance, if you think your Network Card is failing you can try: PING 127.0.0.1. I'd do a packet capture on the loopback interface using wireshark and there was nothing!įIX: Go to loopback properties and remove the check beside the line that reads "DNE Lightweght Filter" For some reason this setting, when checked, filters traffic coming in from GNS3. Usage of loopback addresses are particularly popular with developers and anyone in IT performing network tests.
My issue was that NO TRAFFIC was being passed between the router and the cloud. 0.1, reserved by InterNIC for use in testing network cards.This IP address corresponds to the software loopback interface of the network card, which does not have hardware associated with it, and does not require a physical connection to a network. You can actually run GNS3 with the firewall on as long as the proper rules are in place. What is loopback IP address used for A loopback address is a special IP address, 127.0. Nor was I facing a permissions issue or a firewall issue. R1 - īoth devices have IPs configured for same subnet.
PING LOOPBACK HOW TO
Every time I reinstall GNS3 whether it be standalone or all-in-one I run into a problem when my router cannot ping the MS loopback adapter. Learn how to configure loopback interfaces on cisco router.In this tutorial we will learn how to assign ip address on loopback interfaces.Loopback interfaces are logical interfaces or you can say.
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