User manual COMTREND CT-5071 DATASHEET

[. . . ] CT-5071 ADSL2+ Router User's Manual Version A1. 2, February 10, 2006 261063-004 Preface This manual provides information to network administrators. It covers the installation, operation and applications of the ADSL router. The reader reading this manual is presumed to have a basic understanding of telecommunications. For product update, new product release, manual revision, software upgrade, technical support, etc. , visit Comtrend Corporation at http://www. comtrend. com This document is subject to change without notice. Warning Before servicing or disassembling this equipment, always disconnect all power and telephone lines from the device. Use an appropriate power supply and a UL Listed telephone line cord. [. . . ] The CT-5071 is ready for operation and the LEDs display as described in the LED description tables. 21 IP Over ATM (IPoA) To 1. configure IP Over ATM, Select Quick Setup and click Next. Type the VPI and VCI values provided by the ISP and click Next. Select the IP over ATM (IPoA) radio button and click Next. The following screen appears. Notice that DHCP is not supported over IPoA. The user must enter the IP address or WAN interface for the default gateway setup, and the DNS server addresses provided by the ISP. The following screen appears. 22 Enable NAT checkbox If the LAN is configured with a private IP address, the user should select this checkbox. The NAT submenu on the left side main panel will be displayed after reboot. The user can then configure NAT-related features after the system comes up. If a private IP address is not used on the LAN side, this checkbox should be deselected to free up system resources for better performance. When the system comes back after reboot, the NAT submenu will not be displayed on the left main panel. Enable Firewall checkbox If the firewall checkbox is selected, the firewall submenu on the left side main panel will be displayed after system reboot. The user can then configure firewall features after the system comes up. If firewall is not used, this checkbox should be deselected to free up system resources for better performance. When system comes back after reboot, the Firewall submenu will not be displayed on the left main panel. Enable Quality Of Service Enabling IP QoS for a PVC improves performance for selected classes of applications. However, since IP QoS also consumes system resources, the number of PVCs will be reduced consequently. Use Advanced Setup/Quality of Service to assign priorities for the applications. Click Next to display the following screen. The Device Setup page allows the user to configure the LAN interface IP address and DHCP server if the user would like this ADSL router to assign dynamic IP addresses, DNS server and default gateway to other LAN devices. Select the button Enable DHCP server on the LAN to enter the starting IP address and end IP address and DHCP lease time. 23 The user must configure the IP Address and the Subnet Mask. To use the DHCP service on the LAN, select the Enable DHCP server checkbox, and enter the Start IP addresses, the End IP address and DHCP lease time. [. . . ] By default, the log level is "Debugging, " which is the lowest critical level. The following log levels are Emergency = system is unusable Alert = action must be taken immediately Critical = critical conditions Error = Error conditions Warning = normal but significant condition Debugging = debug-level messages Emergency is the most serious event level, whereas Debugging is the least important. For instance, if the log level is set to Debugging, all the events from the lowest Debugging level to the most critical level Emergency level will be recorded. If the log level is set to Error, only Error and the level above will be logged. [. . . ]