H3C MSR 20-1X Installation Manual

Also see for MSR 20-1X: Configuration guide Quick start

Contents

H3C MSR 20-1X Installation Manual Manual pdf 58 page image

51CAUTION:• If the input file name is the same as the original one in the Flash memory, the system prompts that “Thefile is exist, will you overwrite it? [Y/N]”. Enter Y to overwrite the original file. The new applicationprogram file will then overwrite the original file of this type, ensuring the uniqueness of the applicationprogram on the device.• Make sure the available space in the memory is sufficient. Or, the system prompts “The free space isn'tenough!”.• The file updated will directly overwrite the original file of this type to become the only applicationprogram. The file downloaded here will overwrite the original M file and become the main bootprogram.• For details of file types, refer to Files Managed by the Router on page 35.• You can set the main or backup attribute only for the startup file in the root directory of the device.Upgrading BootWare Through Ethernet InterfaceYou can also upgrade the BootWare through Ethernet interface. Enter 4 in the BootWare submenu, andthe system displays:====================================|<1> Update Full BootWare ||<2> Update Extend BootWare ||<3> Update Basic BootWare ||<4> Modify Ethernet Parameter ||<0> Exit To Main Menu |==========================================================================Enter your choice(0-4):Before upgrading, enter 4 in the menu to configuring Ethernet parameters. For details, refer toConfiguring Ethernet Interface Parameters. Then you can select to upgrade full BootWare, extendedBootWare, or basic BootWare.Upgrading BootWare Through Serial InterfaceUse XModem to upgrade BootWare through a serial interface.XModem Protocol OverviewTo upgrade the BootWare and application program through a serial interface, use the XModemprotocol.XModem is a file transfer protocol widely used for its simplicity and good performance. Modem transfersfiles through serial interfaces. It supports transmission of packets in 128 bytes and 1 KB, error check(checksum and CRC), and error retransmission (generally the maximum number of retransmissionattempts is 10).XModem transmission is completed by the cooperation of a receiver and a sender. The receiver sends anegotiation message to the sender to negotiate an error check method. After the negotiation, the senderstarts to transmit data packets. After a complete packet is received, the receiver checks the packet usingthe agreed method.