User manual TELEWELL TW-EA501 VERSION 3

[. . . ] TW-EA501 v3 ADSL2+ Router User's Manual TW-EA501 version 3 (model b) Table of Contents Chapter 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 2 Introducing the TW-EA501 v3 (b) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Chapter 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] NAT: The NAT (Network Address Translation) feature allows multiple users to access the Internet through a single IP account, sharing the single IP address. If users on your LAN have public IP addresses and can access the Internet directly, the NAT function can be disabled. Leave this at 0. 0. 0. 0 to automatically obtain an IP address from your ISP. Type the subnet mask assigned to you by your ISP (if given) Gateway: Enter the IP address of the default gateway. Primary DNS/ Secondary DNS: Enter the IP addresses of the DNS servers. The DNS servers are passed to the DHCP clients along with the IP address and the subnet mask. Pure Bridge Connections Description: A user-definable name for this connection. method: Select the encapsulation format, this is provided by your ISP. 40 5. 3. 2. 3 ADSL Mode ADSL Mode: There are four modes "Open Annex Type and Follow DSLAM's Setting", "Annex A", "Annex L", "Annex M" and "Annex J" that user can select for this connection. Modulator: There are seven modes "AUTO", "ADSL multimode", "ADSL2", "ADSL2+", "G. Lite:", "T1. 413" and "G. DMT" that user can select for this connection. 41 5. 3. 3 System There are five items within the System section: Time Zone, Firmware Upgrade, Backup/Restore, Restart, User Management and Mail Alert. 42 5. 3. 3. 1 Time Zone The router does not have a real time clock on board; instead, it uses the Simple Network Time Protocol (SNTP) to get the current time from an SNTP server outside your network. After a successful connection to the Internet, the router retrieves the correct local time from the SNTP server you have specified. If you prefer to specify an SNTP server other than those in the drop-down list, simply enter its IP address as shown above. Resync Period (in minutes) is the periodic interval the router waits before it resynchronizes the router's time with that of the specified SNTP server. To avoid unnecessarily increasing the load on your specified SNTP server you should keep the poll interval as high as possible ­ at the absolute minimum every few hours or even days. 43 5. 3. 3. 2 Firmware Upgrade Your router's "firmware" is the software that allows it to operate and provides all its functionality. Think of your router as a dedicated computer, and the firmware as the software it runs. Your router allows you to upgrade the software it runs to take advantage of these changes. Clicking on Browse allows you to select the new firmware image file you have downloaded to your PC. Once the correct file is selected, click Upgrade to update the firmware in your router. Restart Router with: To choose "Factory Default Settings" or "Current Settings" which uses your current setting on the new firmware (it is highly advised to use Factory Default Settings over Current Settings for a clean firmware upgrade). New Firmware Image: Type in the location of the file you wish to upload in this field or click Browse. . . to find the file with the . afw file extension that you wish to upload. Remember that you must decompress compressed (. zip) files before you can upgrade from the file. This process may take up to three minutes. Warning DO NOT power down the router or interrupt the firmware upgrade while it is still in process. Please see section 2. 4 for emergency recovery procedures. 44 5. 3. 3. 3 Backup / Restore These functions allow you to save and backup your router's current settings to a file on your PC, or to restore a previously saved backup. [. . . ] SNMPv3 is a strong authentication mechanism, authorization with fine granularity for remote monitoring. The following MIBs are supported: From RFC 1213 (MIB-II): System group Interfaces group Address Translation group IP group ICMP group TCP group UDP group EGP (not applicable) Transmission SNMP group 80 From RFC1650 (EtherLike-MIB): dot3Stats From RFC 1493 (Bridge MIB): dot1dBase group dot1dTp group dot1dStp group (if configured as spanning tree) From RFC 1471 (PPP/LCP MIB): pppLink group pppLqr group From RFC 1472 (PPP/Security MIB): PPP Security Group) From RFC 1473 (PPP/IP MIB): PPP IP Group From RFC 1474 (PPP/Bridge MIB): PPP Bridge Group From RFC1573 (IfMIB): ifMIBObjects Group From RFC1695 (atmMIB): atmMIBObjects From RFC 1907 (SNMPv2): only snmpSetSerialNo OID 81 5. 3. 8. 7 Remote Access Remote Access Control: Enable: Select Enable to allow management access from remote side (mostly from internet). Duration: Set how many minutes to allow management access from remote side. Zero means always on. Allowed Access IP Address Range: Valid: Select Valid to allow remote management from these IP ranges. [. . . ]