So, you can easily practice with different products to build your carrier in networking. Since it’s an open-source tool, so you can easily run different appliances belonging to different vendors. GNS3 is a Network Simulator that lets you run virtual network devices like Routers, Switch, and Firewalls.
GNS3 stands for Graphical Network Simulator. Getting Started with GNS3 – Creating the First Project in GNS3.Download GNS3 VM Images (VMWare & Virtual Box).Download GNS3 for the Linux Operating system.1.6K MCSA / MCSE on Windows 2012 General.Trusted boundary (extended trust for CDP devices).Spanning Tree Protocol (STP) – Uplink Load Balancing.Spanning Tree Protocol (STP) – Root Guard.Spanning Tree Protocol (STP) – Portfast Support for Trunks.Spanning Tree Protocol (STP) – PortFast BPDU Filtering.Spanning Tree Protocol (STP) – Loop Guard.Rapid-Per-VLAN-Spanning Tree (Rapid-PVST).QoS Policy Propagation via Border Gateway Protocol (QPPB).IP Phone Enhancement – PHY Loop Detection.IEEE 802.1X Multi-Domain Authentication.IEEE 802.1W Spanning Tree Rapid Reconfiguration.IEEE 802.1s VLAN Multiple Spanning Trees.IEEE 802.1s – Multiple Spanning Tree (MST) Standard Compliance.IEEE 802.1ab, Link Layer Discovery Protocol.Flex Link Bi-directional Fast Convergence.BGP Route-Map Continue Support for Outbound Policy.BGP Restart Neighbor Session After max-prefix Limit Reached.BGP Increased Support of Numbered as-path Access Lists to 500.Access Switch Device Manager (SDM) Template.Keep in mind that this module works differently (uses the vlan database etc.) and doesn’t support the following features: However you can use the EtherSwitch module with 2600s, 3600s and 3700s Series. This is due to the impossibility to emulate ASIC processors used in those type of devices. At this moment, it is not possible to emulate Catalyst switches with Dynamips/GNS3.
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