Quidway AR 28 Series Routers Installation Manual.pdf - Index of
Quidway AR 28 Series Routers Installation Manual.pdf - Index of
Quidway AR 28 Series Routers Installation Manual.pdf - Index of
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<strong>Installation</strong> <strong>Manual</strong><strong>Quidway</strong> <strong>AR</strong> <strong>28</strong> <strong>Series</strong> <strong>Routers</strong>Chapter 6 Router Maintenance6.1.5 Recovering the Lost Router PasswordIf the Boot ROM password <strong>of</strong> router is lost, please contact the local agent <strong>of</strong> HuaweiTechnologies. The technician will help you enter the router’s Boot ROM menu and resetthe password.6.2 Maintaining the HardwareWarning:Before this operation, switch <strong>of</strong>f the power to channel ESD voltages; otherwise, the operator may be proneto electric shock.<strong>AR</strong> <strong>28</strong> <strong>Series</strong> have the following storage media:• SDRAM (Synchronous Dynamic DRAM). SDRAM DIMM is the main memorywhere the VRP (Versatile Routing Platform) s<strong>of</strong>tware is running.• Flash memory: used to store program and configuration files <strong>of</strong> the router• NVRAM: also used to store configuration files <strong>of</strong> the router.• Boot ROM: used to store starter and initializer <strong>of</strong> the router.Hardware maintenance <strong>of</strong> <strong>AR</strong> <strong>28</strong> <strong>Series</strong> mainly involves the replacement <strong>of</strong>DRAM/SDRAM, and Boot ROM, install and uninstall <strong>of</strong> the router’s MIM.The DIMM can be replaced in the same way as Boot ROM is, by following the flowshown below:6-11
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