Router# erase startup-config\nErasing the nvram filesystem will remove all configuration files! Continue? [confirm]\n<\/code><\/pre>\nPress Enter<\/strong> to confirm the operation.<\/p>\n<\/span>Step 3: Reload the Operating System<\/span><\/h3>\nReboot the virtual router to clear the active RAM:<\/p>\n
Router# reload\nSystem configuration has been modified. Save? [yes\/no]: no\nProceed with reload? [confirm]\n<\/code><\/pre>\nImportant: Type no<\/code> when asked to save system configuration; saving before reload will overwrite your erased configuration with the running settings.<\/em><\/p>\n<\/span>Step 4: Verify the Default State<\/span><\/h3>\nOnce the router finishes bootstrapping, confirm the reset by looking for the initial configuration prompt:<\/p>\n
--- System Configuration Dialog ---\nWould you like to enter the initial configuration dialog? [yes\/no]: no\nRouter>\n<\/code><\/pre>\nThe router is now in its factory default state with all physical cable connections preserved.<\/p>\n
\n<\/span>Troubleshooting: Why Can’t You Delete a Router in Packet Tracer?<\/span><\/h2>\nEven with standard deletion and reset procedures, you may occasionally encounter situations where Cisco Packet Tracer prevents you from deleting a device or the canvas fails to respond. Below are solutions to the most common causes.<\/p>\n
<\/span>Why is the Delete tool not responding when clicking a router?<\/span><\/h3>\nIf clicking with the Delete tool does nothing, ensure that no secondary configuration windows for that router are open. A modal dialog, an active CLI window, or an open interface configuration panel can lock the device instance. Close all child windows belonging to the router and attempt deletion again.<\/p>\n
<\/span>Why does Packet Tracer freeze during device deletion in Simulation Mode?<\/span><\/h3>\nIf Packet Tracer is actively executing an event-driven packet transmission in Simulation Mode<\/strong>, removing a device that is currently buffering or routing an active PDU (Packet Data Unit) can cause the software engine to hold the operation. Switch to Realtime Mode<\/strong> (bottom-left corner) or click Reset Simulation<\/strong> before deleting the device.<\/p>\n<\/span>Why are devices locked in a Packet Tracer Activity (.pka) file?<\/span><\/h3>\nIf you are completing an assignment or lab provided as a .pka<\/code> file, the instructor or author may have used the Activity Wizard<\/strong> to lock the topology. In locked activity files, modifying, adding, or deleting devices and links is administrative-restricted. If the delete action is greyed out or displays an access warning, the file permissions prevent topology modifications.<\/p>\n<\/span>What should I do if a router is stuck inside a collapsed Cluster?<\/span><\/h3>\nRouters nested inside a logical Cluster cannot be deleted from the root logical view. Double-click the Cluster icon to enter its sub-workspace, locate the router inside, and apply the Delete tool there. Alternatively, right-click the cluster and select Uncluster<\/strong> to return all components to the main canvas.<\/p>\n
\n<\/span>Cisco Packet Tracer Workspace Tools and Shortcuts Reference<\/span><\/h2>\nTo work efficiently and avoid common workspace friction, mastering Packet Tracer\u2019s dedicated editing toolbar and official keyboard shortcuts is essential.<\/p>\n
<\/span>Core Editing Toolbar Definitions<\/span><\/h3>\n\n- Select Tool (
Esc<\/code> \/ Alt + S<\/code>)<\/strong>: The primary cursor mode. Used to interact with devices, open CLI panels, and define selection boxes for single or grouped nodes.<\/li>\n- Delete Tool (
Del<\/code> \/ Backspace<\/code>)<\/strong>: Puts the cursor into deletion mode. Any node, note, shape, or link clicked while this tool is active is flagged for removal.<\/li>\n- Inspect Tool (
I<\/code>)<\/strong>: Allows rapid inspection of underlying device tables\u2014such as ARP tables, MAC address tables, NAT translations, and routing tables (RIB)\u2014without entering the CLI.<\/li>\n- Place Note Tool (
N<\/code>)<\/strong>: Instantiates a text box on the canvas for documenting subnets, IP assignments, or interface labels.<\/li>\n- Resize Tool (
Alt + R<\/code>)<\/strong>: Alters the dimensions of cluster boundaries and visual geometric shapes on the workspace canvas.<\/li>\n- Cluster Tool<\/strong>: Consolidates selected groups of network nodes into a single composite icon to simplify complex network diagrams.<\/li>\n<\/ul>\n
<\/span>Official Keyboard Shortcuts Reference<\/span><\/h3>\n\n\n\n| Function \/ Action<\/th>\n | Default Keybinding<\/th>\n | Operational Scope<\/th>\n<\/tr>\n<\/thead>\n |
\n\nSelect Mode<\/strong><\/td>\nEscape<\/code><\/td>\n| Resets active cursor tool to default selection<\/td>\n<\/tr>\n | \nDelete Mode \/ Delete Selected<\/strong><\/td>\nDelete<\/code> or Backspace<\/code><\/td>\n| Prompts deletion of selected items or toggles delete cursor<\/td>\n<\/tr>\n | \nInspect Tool<\/strong><\/td>\nI<\/code><\/td>\n| Toggles table inspector cursor<\/td>\n<\/tr>\n | \nAdd Note<\/strong><\/td>\nN<\/code><\/td>\n| Places a text annotation on the canvas<\/td>\n<\/tr>\n | \nToggle Realtime Mode<\/strong><\/td>\nAlt + R<\/code><\/td>\n| Switches workspace engine to continuous Realtime execution<\/td>\n<\/tr>\n | \n | | | | | | | | | | |