Hardware Installation Guide
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... 2-5 Connecting Power to the Router 2-8 Verifying Your Installation 2-9 Optional Installation Steps 2-10 Connecting a PC 2-10 Connecting a Modem 2-12 Wall-Mounting 2-13 Stacking the Router 2-14 Unstacking the Router 2-17 3 C H A P T E R Troubleshooting 3-1 Contacting Your Cisco Reseller 3-1 Recovering a Lost Password 3-2 Determining the Configuration Register Value 3-2 Resetting the Router 3-4 Resetting the Password 3-6 Resetting the Configuration Register Value 3-6 Problem Solving 3-7 Cisco 1721 Router Hardware Installation Guide viii 78...
... 2-5 Connecting Power to the Router 2-8 Verifying Your Installation 2-9 Optional Installation Steps 2-10 Connecting a PC 2-10 Connecting a Modem 2-12 Wall-Mounting 2-13 Stacking the Router 2-14 Unstacking the Router 2-17 3 C H A P T E R Troubleshooting 3-1 Contacting Your Cisco Reseller 3-1 Recovering a Lost Password 3-2 Determining the Configuration Register Value 3-2 Resetting the Router 3-4 Resetting the Password 3-6 Resetting the Configuration Register Value 3-6 Problem Solving 3-7 Cisco 1721 Router Hardware Installation Guide viii 78...
Hardware Installation Guide
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..., no parity, 1 stop bit and no flow control. Cisco 1721 Router Hardware Installation Guide 3-2 78-13834-02 You then restore the router to its prior configuration. • Resetting the Configuration Register Value If you are using an enable password, you reconfigure the router to its intial startup configuration. Password recovery consists of the following major processes: • Determining...
..., no parity, 1 stop bit and no flow control. Cisco 1721 Router Hardware Installation Guide 3-2 78-13834-02 You then restore the router to its prior configuration. • Resetting the Configuration Register Value If you are using an enable password, you reconfigure the router to its intial startup configuration. Password recovery consists of the following major processes: • Determining...
Hardware Installation Guide
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... to Step 3. Recovering a Lost Password Chapter 3 Troubleshooting Resetting the Router Follow these steps to reset the router: Step 1 Do one of the following: • If break is enabled, go to get started! The terminal displays the ROM monitor prompt. Go to 0x142. Press Return. The terminal displays the following prompt appears: Router> Cisco 1721 Router Hardware Installation Guide 3-4 78...
... to Step 3. Recovering a Lost Password Chapter 3 Troubleshooting Resetting the Router Follow these steps to reset the router: Step 1 Do one of the following: • If break is enabled, go to get started! The terminal displays the ROM monitor prompt. Go to 0x142. Press Return. The terminal displays the following prompt appears: Router> Cisco 1721 Router Hardware Installation Guide 3-4 78...
Hardware Installation Guide
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... startup-config command to display an enable password in the startup configuration. Write down the password and keep the record secure. If you are using an enable password, it will be made only in the "Resetting the Password" section, which follows. 78-13834-02 Cisco 1721 Router Hardware Installation Guide 3-5 Complete the password recovery process by performing the steps in...
... startup-config command to display an enable password in the startup configuration. Write down the password and keep the record secure. If you are using an enable password, it will be made only in the "Resetting the Password" section, which follows. 78-13834-02 Cisco 1721 Router Hardware Installation Guide 3-5 Complete the password recovery process by performing the steps in...
Hardware Installation Guide
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... you have recovered an enable password: Step 1 Step 2 Enter the configure terminal command to enter configuration mode: Router# configure terminal Enter the config-register command and the original configuration register value that you recorded in Step 5 in the "Determining the Configuration Register Value" section on page 3-2. Cisco 1721 Router Hardware Installation Guide 3-6 78-13834-02...
... you have recovered an enable password: Step 1 Step 2 Enter the configure terminal command to enter configuration mode: Router# configure terminal Enter the config-register command and the original configuration register value that you recorded in Step 5 in the "Determining the Configuration Register Value" section on page 3-2. Cisco 1721 Router Hardware Installation Guide 3-6 78-13834-02...
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... A-1 conventions command xvi text xiii copy command 3-5, 3-6 D DIMM installing C-5 locating on router C-4 documentation, related xii DRAM 1-8 E enable command 3-5 enable password, recovering 3-2 enable secret command 3-6 enable secret password, resetting 3-6 ETH ACT LED 1-7 ETH COL LED 1-7 Ethernet cable connecting 2-2 pinouts B-1 requirements for networks B-2 Ethernet port connecting 2-2, 2-3 description 1-3, 1-4 illustration 1-4 specifications A-1 IN-2 Cisco 1721 Router Hardware Installation Guide 78-13834-02
... A-1 conventions command xvi text xiii copy command 3-5, 3-6 D DIMM installing C-5 locating on router C-4 documentation, related xii DRAM 1-8 E enable command 3-5 enable password, recovering 3-2 enable secret command 3-6 enable secret password, resetting 3-6 ETH ACT LED 1-7 ETH COL LED 1-7 Ethernet cable connecting 2-2 pinouts B-1 requirements for networks B-2 Ethernet port connecting 2-2, 2-3 description 1-3, 1-4 illustration 1-4 specifications A-1 IN-2 Cisco 1721 Router Hardware Installation Guide 78-13834-02
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... xiii NVRAM 1-8 O OK LED description 1-6 diagnostics 3-7 opening chassis C-2 P password, recovering 3-2 PC connecting to router 2-10 terminal emulation settings 2-11 pinouts console cable B-3 Ethernet cable B-1 power socket connecting 2-8 illustration 1-4 specifications A-1 problem solving 3-7 PWR LED 1-6 R reset command 3-4 resetting the router 3-4 to 3-5 router resetting 3-4 to 1-9 S serial cable 1-10 service profile identifier IN-4 Cisco 1721 Router Hardware Installation Guide 78-13834-02 to 3-5 specifications...
... xiii NVRAM 1-8 O OK LED description 1-6 diagnostics 3-7 opening chassis C-2 P password, recovering 3-2 PC connecting to router 2-10 terminal emulation settings 2-11 pinouts console cable B-3 Ethernet cable B-1 power socket connecting 2-8 illustration 1-4 specifications A-1 problem solving 3-7 PWR LED 1-6 R reset command 3-4 resetting the router 3-4 to 3-5 router resetting 3-4 to 1-9 S serial cable 1-10 service profile identifier IN-4 Cisco 1721 Router Hardware Installation Guide 78-13834-02 to 3-5 specifications...