S-Access ETHERLINK IV Technical Description And Operations Manual
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DT Etherlink IV User Manual- 44 -FC [ON/OFF] [N=1-4]IRATE [speed/OFF] [N=1-4]ERATE [speed/OFF]CRATE [speed] [CoS] [WAN]COS [QOS/VLAN] [N] [0..3/OFF]TRAPIP [ADD/DEL] x.x.x.xCOMMUNITYSNMPSET [ON/OFF]NETDEFAULTCONNECT [N:[1-13/R]]M(AIN)H(ELP)Table 4.1 Command structure according to ITU-T Rec. M.3400 (Telecommunication ManagementNetworks)4.2 Etherlink_IV SoftwareEvery Etherlink_IV device stores up to two software versions in the memory (EEPROM): oneunchangeable software (standby software No.1) and one upgradeable software (software No.2).Two versions are necessary to prevent any device failure due to downloading of faulty or damagedsoftware or due to hardware failure during downloading of the new software.During downloading, the new software overwrites the upgradeable software. If the new softwaredownloading via X-modem is successful, a message appears that the modem should be restarted tostart operating under the new software. After the restart, i.e., when the new version of the upgradedsoftware is started for the first time, the operator should confirm the downloaded software. Afterconfirmation, this software becomes unchangeable. If downloading was interrupted or there was afailure in the data transmission, a message is displayed. In this case, if the data has already beenpartially downloaded into the modem and the upgradeable software is damaged, the unchangeablesoftware will be used to start the modem (please repeat the downloading of the software).By default, the upgradeable software is the basic one, if it was confirmed. If the upgradeablesoftware was not confirmed after the first start or it was damaged (invalid data format, incorrectchecksum), the standby software is loaded.4.3 Configuration and Application StorageThe whole system stores four configurations: running configuration, startup configuration, newconfiguration and backup configuration.The running configuration contains all configuration values guarantee the current operation of thedevice. If two modems have the same version of the software and the same running configurationthey should operate equally. The running configuration is stored in the RAM of the device. Thecurrent parameters determine the operation until the next restart or any actions on the runningconfiguration (storage and etc.). During initialization the initial parameters of the runningconfiguration are loaded from the startup configuration.The startup configuration contains all configuration values which will be used to configure thedevice after its restart. The startup configuration is stored in EEPROM and is used to initialize therunning configuration during the system start-up.The new configuration stores changes in configuration parameters combined into groups ofparameters that require a confirmation of changes (i.e., this configuration stores setting, whichshould be confirmed after being changed, for example, IP-address of the device). The newconfiguration is stored in the device RAM. After setting all necessary changes from the group, thesystem administrator confirms changes in the group, and values belonging to this group are writtenfrom the new configuration into the running one. In this case, the simultaneous application of allsetting in the group is guaranteed.The backup configuration is a backup of the current configuration. The backup configuration isstored in the EEPROM. During the configuration restoration, values from the backup configurationare copied to the startup configuration. |
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