NexComm Systems NEXPEED NBG440 User Manual
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NexComm Systems NEXPEED NBG440 User Manual

Shdsl bridge/router
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  • Page 1 ’ ’ NexComm Systems Tel: +82-31-781-1862, Fax: +82-31-781-1863 E-mail: support@nexcomm.co.kr...
  • Page 2 Copyright © 2004 NexComm Systems Co., Inc. All Rights Reserved. This document contains information that is the property of NexComm Systems Co., Inc. All or part of this document may not be copied, reproduced, reduced to any electronic medium or...

  • Page 3: Table Of Contents

    NEXPEED NBG440 User’s Manual Contents PART I: NEXPEED NBG440 Introduction ............... 4 Introduction........................5 Specifications........................7 Product Appearance ......................9 PART II: Installing the Router ................. 11 Physical Environments....................12 Checking in the Box ...................... 12 Connecting Cables and Connectors ................13 PART III: Configuring the Router ................
  • Page 4 NEXPEED NBG440 User’s Manual Contents(continued) PART IV: Configuring advanced Functions............53 Configuring description of the interface ................ 54 Configuring IEEE 802.1P/Q Tagged VLAN..............55 Configuring VLAN for the built-in switch ..............67 Configuring DHCP ......................73 Configuring IP Filter ...................... 76 Configuring NAT ......................

  • Page 5: Part I: Nexpeed Nbg440 Introduction

    NEXPEED NBG440 User’s Manual PART I: NEXPEED NBG440 Introduction □ Overview and Features □ Specification □ Product Appearance NexComm Systems, Inc. 4 PAGE...

  • Page 6: Introduction

    NEXPEED NBG440 User’s Manual Introduction Introduction to the NEXPEED NBG440 router Overview Implementing international standard-based ITU-T/ETSI G.SHDSL transmission (G.991.2) with robust IP routing, concurrent bridging functions and built-in 4 port Ethernet switch, NBG440 is perfect for mission-critical applications such as compus networking, multimedia services and network gateway access.
  • Page 7 NEXPEED NBG440 User’s Manual ▄ Supports TCP/IP, UDP, ICMP, and ARP protocol. ▄ Supports HDLC, PPP, Frame Relay and ETHDLC as a transmission protocol. ▄ Supports transparent bridging function. Functionality of IMUX (Link-multiplexing function) IEEE 802.1Q tag-based VLAN IEEE 802.1P Priority ▄...

  • Page 8: Specifications

    NEXPEED NBG440 User’s Manual Specifications NEXPEED NBG440 has 4-port 10/100M Ethernet switch, one SHDSL port and the console port. [Table 1-1] The NBG440 router specification Hardware Specifications DRAM : 16Mbyte Memory Flash Memory : 512Kbyte 2 pair SHDSL with one RJ-45 DSL Port (for G.SHDSL)
  • Page 9 NEXPEED NBG440 User’s Manual Power Requirements DC input voltage +5V, 2A F1 : KST 250 Vac, 2 A Fuses F2, F3 : F1250T , 250 V, 1.25 A Power Adapter Requirements This unit should be uses UL Listed AC/DC Adaptor, CCN: EPBU, EPBU7, QQGQ or QQGQ7 for USA or Canada only.

  • Page 10: Product Appearance

    NEXPEED NBG440 User’s Manual Product Appearance The front side for the NBG440 Router The NEXPEED NBG440 router has various LEDs in the front panel to provide port status information in real time. [Figure 1-1] The front side of NBG440 LINE LEDs in the front side of the NBG440 router shows router’s status at the time.
  • Page 11 NEXPEED NBG440 User’s Manual The rear side for the NBG440 Router The NBG440 router provides power, console, and LAN cables, in addition to the G.SHDSL line connector in the backside. [Figure 1-2] The rear side of NBG440 DC5V CONSOLE LINE...

  • Page 12: Part Ii: Installing The Router

    NEXPEED NBG440 User’s Manual PART II: Installing the Router □ Physical Environments □ Checking in the Box □ Connecting Cables and Connectors NexComm Systems, Inc. 11 PAGE...

  • Page 13: Physical Environments

    NEXPEED NBG440 User’s Manual Physical Environments To make the installation as well as use of the NEXPEED NBG440 safe, a constant temperature and humidity are required. The conditions of physical environment are as follows : Operating Temperature: 0º to 50ºC (32º to 122ºF) Storage Temperature: -20º...

  • Page 14: Connecting Cables And Connectors

    NEXPEED NBG440 User’s Manual Connecting Cables and Connectors This part explains the physical set up for NEXPEED NBG440 router. Connect the cable after checking the connector in the rear side of NBG440 router. Ground Connection Warning The PROTECTIVE EARTHING CONDUCTOR or PROTECTIVE EARTHING TERMINAL must be permanently connected to the equipment.
  • Page 15 NEXPEED NBG440 User’s Manual To reduce the risk of fire, use only No. 26 AWG or larger telecommunication CAUTION line cord. Pour réduire les risques d’incendie, utiliser uniquement des conducteurs de ATTENTION télécommunications 26 AWG au de section supérleure. Connecting LINE(SHDSL) Port 1>...
  • Page 16 NEXPEED NBG440 User’s Manual [Table 2-2] Console software parameters PARAMETER VALUE Bits per Second 9600 Data Bits Parity Stop Bit Flow Control None Terminal Type VT100 NexComm Systems, Inc. 15 PAGE...

  • Page 17: Part Iii: Configuring The Router

    NEXPEED NBG440 User’s Manual PART III: Configuring the Router □ Reviewing the Default Configuration □ Accessing the Console □ User Mode □ Configuring SHDSL Port □ Operation Mode of the Interface □ Configuring IP Routing and IP Address □ Configuring Bridging □...

  • Page 18: Reviewing The Factory Default Configuration

    NEXPEED NBG440 User’s Manual Reviewing the Factory Default configuration NBG440 is preconfigured with default settings. The following table lists these default settings. NBG440(conf)# sh config # System Configuration: # boot status: system configuration checksum OK. # 3.9.2f [Wed Apr 7 18:06:46 2004] running # 3.9.2f [Wed Apr 7 18:06:46 2004] saved...

  • Page 19: Accessing The Console

    NEXPEED NBG440 User’s Manual Accessing the Console You can change the setting in the console to modify the functionality of the NBG440 unit. The NBG440 router provides CLI (Command Line Interface) in the text mode to setup and operate built-in functions, which can be used after the console is connected.

  • Page 20: User Mode

    NEXPEED NBG440 User’s Manual User Mode The NBG440 router supports two modes: Login Mode and Configuration Mode. The dual mode like this provides a security feature for configuration and operation of the router. Login Mode This mode does not allow for a router configuration. In this mode, however, only such commands that are associated with monitoring are executed for the equipment operation.
  • Page 21 Usage Examples New password:yyyy Re-enter new password:yyyy And then you must save the changes in Flash memory. COMMAND (conf)# write config Note: If you lost your password, please contact Nexcomm Systems Co., Inc. Tel: +82-31-781-1862 E-mail: sales@nexcomm.co.kr support@nexcomm.co.kr NexComm Systems, Inc.

  • Page 22: Configuring Shdsl Port

    NEXPEED NBG440 User’s Manual Configuring SHDSL Port The NBG440 unit supports 2 ports for a SHDSL connection. The each port is called s0 and s1. Related Commands : device <ifname> annex / device <ifname> gshdsl / show device gshdslset Configuring Standard (Annex A/ Annex B) The G.991.2 Annexes are specific to SHDSL.
  • Page 23 NEXPEED NBG440 User’s Manual Note: If you change the wire mode, you should reboot your system. The unit may be run the changed configuration incorrectly. Fixd rate mode and Rate adaptive mode The SHDSL port supports two types of training rate (fixed and adaptive).
  • Page 24 NEXPEED NBG440 User’s Manual <ifname> - interface name co|rt : unit type 4wire: sets 4-wire mode. If you omit this, sets 2-wire mode. auto : sets the rate adaptive mode; auto is not supported in 4-wire Parameters mode <kbps> - sets a line rate in kbps.
  • Page 25 NEXPEED NBG440 User’s Manual gshdsl(ANNEX-A) 4wire bind = { } (conf)# Using gshdslset Commands If you type the following command, it displays gshdslset help commands. COMMAND (conf)# gshdslset help Usage Examples: (conf)# gs help Usage:gshdslset margin <0 ~ 15> <ifname>...
  • Page 26 NEXPEED NBG440 User’s Manual Note1: Operating Status Handshake, when local transceiver tries to reach the far-end transceiver. Training, indicates the startup training is in progress. Data, if successfully trained. Note2: Loop Attenuation The difference in decibels (dB) between the power received at the near-end and the power transmitted from the far-end.
  • Page 27 NEXPEED NBG440 User’s Manual Enabling/Disabling the Power back-off Once the initial SYNC has occurred, the COE(DSLAM) and the CPE can work together to reduce the amount of power used on the wire. If the data rate is set to a speed lower than the full capability of the loop being used, there is no need to push maximum power on the loop.

  • Page 28: Operation Mode Of The Interface

    NEXPEED NBG440 User’s Manual Operation Mode of the Interface The router can operate as a bridge, as a router, or as both (sometimes call a brouter). The router can be configured to perform general routing operation, bridging operation or bridging and routing operation.
  • Page 29 NEXPEED NBG440 User’s Manual Note1: Routing offers advantages over bridging : - It limits broadcasts to the local LAN segment. - It limits the protocols that are routed beyond the LAN segment. - Routed protocols allow networks to grow as large as needed.
  • Page 30 NEXPEED NBG440 User’s Manual Routing and Bridging Mode(Brouter) : routing is active, bridging is active In this mode, only IP packets are routed, and all other packets (IPX, NetBEUI, etc.) are handled with bridging. You set up an IP address to the interface and enable bridging to the interface.

  • Page 31: Configuring Ip Routing And Ip Address

    To enable the router-connected user's local network (LAN) to communicate with the outside, the IP address should be set in the LAN interface of the NEXPEED NBG440 router. If the IP address is assigned to the LAN interface without an additional activation command, the interface can be automatically enabled, making the communication possible.
  • Page 32 NEXPEED NBG440 User’s Manual (conf)# interface <ifname> ip unnumbered COMMAND (conf)# interface <ifname> ip <address> <mask> unnumbered : sets IP unnumbered <ifname> - interface name Parameters <address> - IP address <mask> - subnet mask Usage Examples: (conf)# int s0 ip 192.168.3.2 255.255.255.252...
  • Page 33 NEXPEED NBG440 User’s Manual Usage Examples: (conf)# int lan ip 192.168.3.2 255.255.255.224 secondary Note: Don’t forget adding the string secondary. Otherwise, it replaces your primary IP address with new IP address. Removing the assigned IP Address from the Interface To remove the assigned IP address from LAN or WAN interface, use the following command.

  • Page 34: Configuration Example

    NEXPEED NBG440 User’s Manual Usage Examples: (conf)# show interface (conf)# sh int lan (conf)# sh int -v (conf)# sh int -v s0 (conf)# sh int –c (conf)# sh int –c s0 Configuration Example1 Assigning IP address to the LAN interface and monitoring that interface: (conf)# interface lan ip 168.126.188.130 255.255.255.0...
  • Page 35 NEXPEED NBG440 User’s Manual 10 RxOK, 0 RxNoBufs, 0 RxMiss 0 RxCRCErr, 0 RxAlignErr, 0 RxDribbles 5 TxOK, 0 TxNotReady, 0 TxTooBig 0 TxLossCRS, 0 TxLateCols, 0 TxCollisions (conf)# Configuration Example2 Assigning multiple IP addresses to the LAN interface: (conf)# int lan ip 172.16.10.1 255.255.255.0 secondary sets up the “172.16.10.1”...

  • Page 36: Configuring Bridging

    NEXPEED NBG440 User’s Manual Configuring Bridging The NBG440 router supports transparent bridging for LAN and WAN. Operation of Bridging If the destination address of the packet is known in the bridge table, the packet is forwarded on a single interface that is enabled bridging. If the packet's destination is unknown in the bridge table, the packet is flooded on all forwarding interfaces that are enabled bridging.
  • Page 37 NEXPEED NBG440 User’s Manual (conf)# interface <ifname> bridge enable COMMAND (conf)# interface <ifname> bridge disable Parameters <ifname> - Interface name Usage Examples: (conf)# int lan bridge enable (conf)# int s0 bridge enable Enabling and Disabling IP Routing Assign the IP address to the LAN interface to manage the router with Telnet, TFTP, SNMP, ICMP (ping), and so forth.
  • Page 38 NEXPEED NBG440 User’s Manual Monitoring and Verifying Bridging After you have set up the router for bridging, you can monitor and verify its operation by performing the following commands. Use the following command to view the bridged interfaces. COMMAND (conf)# show bridge Use the following command to lists the contents of the bridge table.

  • Page 39: Configuration Examples

    NEXPEED NBG440 User’s Manual Configuration Examples Configuring Bridging-Only Mode : (conf)# interface s0 delete (conf)# interface s0 bridge enable (conf)# show interface s0 Interface: s0, status <UP>, mtu 1500 ip address unnumbered Bridging-only mode encapsulation ETHDLC, ether 00:d0:84:01:08:b2, keepalive 2/5...

  • Page 40: Configuring Multiplexed Link

    NEXPEED NBG440 User’s Manual Configuring Multiplexed Link NBG440 that has more than one SHDSL port offer the functionality of Link-Multiplexing so it enables to increase the bandwidth. MXL(Multiplexed Link) interface Before using link-multiplexing feature, you should create a MXL(Multiplexed Link) interface.
  • Page 41 NEXPEED NBG440 User’s Manual For example, if you join s0 and s1 to mx0, you should disable interfaces of s0, s1 and mx0, if they are enabled. Attention3: Once the MXL interface is enabled, you can not set bounded ports as an individual port with the “interface”...
  • Page 42 NEXPEED NBG440 User’s Manual Usage Examples: (conf)# device mx0 bind s0 (conf)# device mx0 bind s1 s0 and s1 works as a member of mx0. => (conf)# sh dev name type side speed -------------------------------------- 10/100BASE-T auto gshdsl(ANNEX-A) auto gshdsl(ANNEX-A) auto...
  • Page 43 NEXPEED NBG440 User’s Manual Interface: lan, status <UP>, mtu 1500 ip address unnumbered Bridging-only mode ether 00:d0:84:01:08:b2, speed 10 Mbps half-duplex (conf)# => s0 and s1 is disabled. And if the MXL interface (mx0) is disabled, the router doesn’t display status of the MXL interface.
  • Page 44 NEXPEED NBG440 User’s Manual Configuration example: In the following example, two routers, NBG440 #1 and NBG440 #2, connect back-to-back over two pairs SHDSL lines with mx0 interface. Two routers are configured as a bridge and set up the ethdlc encapsulation.
  • Page 45 NEXPEED NBG440 User’s Manual Step3: Binding all individual ports to mx0. (conf)# device mx0 bind s0 (conf)# device mx0 bind s1 (conf)# sh dev name type side speed --------------------------------------- 10/100BASE-T auto gshdsl(ANNEX-A) auto gshdsl(ANNEX-A) auto bind = { s1 s0 }...

  • Page 46: Configuring Link Encapsulation And Keepalive

    NEXPEED NBG440 User’s Manual Configuring Link Encapsulation and Keepalive SHDSL Link Encapsulation The NBG440 unit and the remote device must agree upon the type of link encapsulation used. The NBG440 unit must encapsulate all outbound packets before sending them across the WAN, and the remote device must decapsulate them before forwarding the packets to the local network.
  • Page 47 NEXPEED NBG440 User’s Manual Usage Examples: (conf)# int s0 encap hdlc (conf)# show interface s0 Keepalive You can configure the keepalive interval, which is the frequency at which the router sends messages to the other end, to ensure a network interface is alive.

  • Page 48: Configuring Static Ip Routes

    NEXPEED NBG440 User’s Manual Configuring Static IP Routes The essential challenge of a router is, when it receives data intended for a particular destination, which decide a next device (hop) to send that data to. A route is a path from one network to another, which specifies the destination network and the router to use get to that network.
  • Page 49 NEXPEED NBG440 User’s Manual Usage Examples: (conf)# ip route del default deletes all default gateways. => Static Route To add a route, use the following command. COMMAND (conf)# ip route add <net> <mask> <ifname> [<gw>] [<metric>] <net> <mask> - adds the destination network <ifname>...

  • Page 50: Viewing The Routing Table

    NEXPEED NBG440 User’s Manual Viewing the Routing Table To display the information for the routing table, use the following command. Displays only routes is current available COMMAND (conf)# show ip route [-a] Parameters -a options is displayed all routes in the routing table.

  • Page 51: Configuring The Arp Table

    NEXPEED NBG440 User’s Manual Configuring the ARP Table ARP (Address Resolution Protocol) is a protocol designed for an acquisition of information for mapping between the IP address and physical MAC address. Currently, the most prevalent IP address is the address used by the network layers. And when the data transmission takes place through the physical media connected with the actual router, the address the communication uses is not the IP address but the MAC address.

  • Page 52: Saving The Configuration

    NEXPEED NBG440 User’s Manual Saving the Configuration The system configuration values currently in effect are saved in Flash memory. The configuration values currently being used by the system are lost when the system is rebooted. To prevent the system configuration values from being lost, the non-volatile memory called Flash memory is employed.

  • Page 53: Rebooting The System

    NEXPEED NBG440 User’s Manual Rebooting the system Unplugging and subsequent plugging of the power source adapter for NBG440 triggers a reboot of the system hardware. The following command is available to perform a software-wise reboot of the system. COMMAND (conf)# reboot flash Note: Before rebooting the system, you must save current configuration to Flash memory.

  • Page 54: Part Iv: Configuring Advanced Functions

    NEXPEED NBG440 User’s Manual PART IV: Configuring advanced Functions □ Configuring descriptions for the interface □ Configuring IEEE 802.1P/Q Tagged VLAN □ Configuring VLAN for the built-in switch □ Configuring DHCP □ Configuring IP Filter □ Configuring NAT □ Configuring RIP □...

  • Page 55: Configuring Description Of The Interface

    NEXPEED NBG440 User’s Manual Configuring description of the interface You can set up a meaningful description of the interface. A description is a user-defined text string. That string can contain a space or spaces. Related Commands : interface <ifname> descr To set a description of the interface, use the following command.

  • Page 56: Configuring Ieee 802.1P/Q Tagged Vlan

    NEXPEED NBG440 User’s Manual Configuring IEEE 802.1P/Q Tagged VLAN By default, the NBG440 bridge can forward 802.1Q tagged traffic via all ports on the unit. Also the NBG440 bridge configures the tag-based VLANs (802.1Q and 802.1P). VLANs (Virtual LANs) A VLAN is a group of devices on one or more LANs that are configured to communicate as if they were attached to the same wire, when in fact they are located on a number of different LAN segments.
  • Page 57 NEXPEED NBG440 User’s Manual 802.1P Priority Queue 0, 1 2, 3 4, 5 In case of IP phone having traffic sensitive to delay, it can be mapped into highest queue so that the traffic in the highest queue is handled prior to other traffics. By having this Priority Queue, higher quality of service can be provided for various demands.
  • Page 58 NEXPEED NBG440 User’s Manual (conf)# qvlan –default WARNING !!! this will overwrite the current VLAN setting: Confirm ? (y/n) <= Press ‘y’. loading default VLAN configuration ... (conf)# show qvlan ---------------------------------------------------------------- VLAN and QoS (802.1q & 802.1p) : disabled port...
  • Page 59 NEXPEED NBG440 User’s Manual Deleting a VLAN This command deletes one or more ports from the specific VLAN. If you delete all ports from the VLAN, the VLAN becomes vanished automatically. COMMAND (conf)# qvlan del <vid> <ifname> [<ifname> ...] <vid> - A VLANid , Valid parameter range is from 2 to 4094.
  • Page 60 NEXPEED NBG440 User’s Manual Configuring PVID (for ingress port) A port is assigned a default Port VLANid (pvid) and the 802.1p priority. Based on values you define, the tags (pvid and priority) are inserted in an untagged frame header before it is forwarded.
  • Page 61 NEXPEED NBG440 User’s Manual <ingress vid> - A VLANid of received tagged frame Parameters <ifname> - Interface name Usage Examples: (conf)# qvlan unmap 100 s0 Renaming a VLAN Each VLAN is given a name that can be up to 31 characters. VLAN names are locally significant.
  • Page 62 NEXPEED NBG440 User’s Manual Configuration Example Below is an example of how to configure 3 VLANs to be transported in tagged form and one management VLAN to access the NBG440 unit. Management Station 10.0.0.10 10.0.0.20 3 VLANs 3 VLANs - - - - - - - - -...
  • Page 63 NEXPEED NBG440 User’s Manual Interface: lan, status <UP>, mtu 1500 ip address 10.0.0.20 255.255.255.0 Bridging-only mode ether 00:d0:84:01:1d:57, speed 100 Mbps full-duplex NBG440_CO(conf)# VLAN Configuration for NBG440 (RT) Step1: Configuring VLAN as the default configuration. To configure the default configuration, use the following command.
  • Page 64 NEXPEED NBG440 User’s Manual Step3: Configuring 3 VLANs. NBG440_RT(conf)# qvlan add 100 lan s0 NBG440_RT(conf)# qvlan add 110 lan s0 NBG440_RT(conf)# qvlan add 120 lan s0 Step4: Remove the lan an s0 from the default vlan. NBG440_RT(conf)# qvlan del 1 lan s0 Step5: Set the lan and s0 as the trunk port.
  • Page 65 NEXPEED NBG440 User’s Manual 2047 vlan-2047 local s0 NBG440_RT(conf)# NBG440_RT(conf)# sh bridge map Station Identifier port -------------------------------------------- 2047-00:d0:84:01:1d:56 local permanent 2047-00:d0:84:01:1d:57 2047-00:e0:4c:ed:08:5d 100-00:d0:84:00:ff:99 100-00:d0:84:00:ff:ee NBG440_RT(conf)# VLAN Configuration for NBG440 (CO) Step1: Configuring VLAN as the default configuration. To configure the default configuration, use the following command.
  • Page 66 NEXPEED NBG440 User’s Manual 1 default local s0 s1 lan mx0 NBG440_CO(conf)# Step2: Configuring the VLAN for management. NBG440_CO(conf)# qvlan pvid 2047 1 local NBG440_CO(conf)# qvlan add 2047 local lan s0 Step3: Configuring 3 VLANs. NBG440_CO(conf)# qvlan add 100 lan s0...
  • Page 67 NEXPEED NBG440 User’s Manual vid name ports ------------------------------------------------------------------------- 1 default local s1 mx0 100 vlan-0100 s0 lan 110 vlan-0110 s0 lan 120 vlan-0120 s0 lan 2047 vlan-2047 local s0 lan NBG440_CO(conf)# NBG440_CO(conf)# sh bridge map Station Identifier port -------------------------------------------- 2047-00:d0:84:01:1d:56...

  • Page 68: Configuring Vlan For The Built-In Switch

    NEXPEED NBG440 User’s Manual Configuring VLAN for the built-in switch The NBG440G have the built-in Ethernet switch. This switch supports 4 ports to connect a network device and the internal 1 port to connect the system. Port names are pre-defined; p1, p2, p3, p4 and lan (connected to the LAN interface).
  • Page 69 NEXPEED NBG440 User’s Manual Configuring VLANs and Qos Default configuration (conf)# sh ethsw ------------------------------------------------------------------------- Ethernet Switch VLAN (802.1q) : disabled port pvid/pri trunk QoS-info ------------------------------------------------------------------------- high unlimited, low unlimited high unlimited, low unlimited high unlimited, low unlimited high unlimited, low unlimited...
  • Page 70 NEXPEED NBG440 User’s Manual <vid> - A VLANid , Valid parameter range is from 2 to 4094. Parameters <port> - Port name Usage Examples: (conf)# ethsw add 100 p1 lan => creates one VLAN (id 100) and then assign ports p1 and lan to that VLAN.
  • Page 71 NEXPEED NBG440 User’s Manual disable: sets as the access port <port> - Port name Usage Examples: (conf)# ethsw trunk enable lan Configuring PVID (for ingress port) A port is assigned a default Port VLANid (pvid) and the 802.1p priority. Based on values you define, the tags (pvid and priority) are inserted in an untagged frame header before it is forwarded.
  • Page 72 NEXPEED NBG440 User’s Manual Usage Examples: (conf)# ethsw qos high 128 p3 Configuration Example This example shows the VLAN configuraion for the ethernet switch only. Thus you must set the VLAN configuration for system interfaces using the qvlan command. How to use the qvlan command is explained above chapter.
  • Page 73 NEXPEED NBG440 User’s Manual Step5: Enable VLAN feature. NBG440_RT(conf)# ethsw tagvlan enable Step6: Save your changes. NBG440_RT(conf)# write config Step7: Verifying your VLAN configuration. NBG440_RT(conf)# sh ethsw ------------------------------------------------------------------------- Ethernet Switch VLAN (802.1q) : enabled port pvid/pri trunk QoS-info ------------------------------------------------------------------------- high unlimited, low unlimited...

  • Page 74: Configuring Dhcp

    NEXPEED NBG440 User’s Manual Configuring DHCP The DHCP (Dynamic Host Configuration Protocol) protocol enables a DHCP client who has not set the IP address to set the IP address automatically. NBG440 supports the following two functions: a DHCP relay function that delivers the IP address request packet received from the DHCP client to the specified DHCP server, and a DHCP server function that allocates the IP address upon the receipt of the IP address request packet.
  • Page 75 NEXPEED NBG440 User’s Manual Step2: Setting gateway, dns, and wins for the IP address pool : COMMAND (conf)# dhcp <poolname> gw|dns|wins <ipaddr> [secondary] <poolname> - name of the IP address pool gw|dns|wins : gateway or dns or wins <ipaddr> - IP address of gateway or dns or wins...
  • Page 76 NEXPEED NBG440 User’s Manual Deleting the IP address Pool 1> stop the dhcp-sever feature for the IP address pool COMMAND (conf)# dhcp <poolname> stop 2> delete the IP address pool COMMAND (conf)# dhcp <poolname> del Management the assigned IP address...

  • Page 77: Configuring Ip Filter

    NEXPEED NBG440 User’s Manual Configuring IP Filter Filters inspect packets to determine whether or not to prevent them from entering or leaving your network. When a filter is in use, NBG440 examines every packet in the packet stream and takes action if the defined filter conditions are present.
  • Page 78 NEXPEED NBG440 User’s Manual [<expressions>] src <address> - Specify a source IP address (Possible to omit) dst <address> - Specify a destination IP address (Possible to omit) <address> = A.B.C.D/M[:<lport>[-<hport>]] A.B.C.D : IP address M : Subnet mask value (the number of ‘1’ bits) <lport>[-<hport>] : low num –...
  • Page 79 NEXPEED NBG440 User’s Manual Deleting a filter To delete a filter condition, use the following command: COMMAND (conf)# filter in|out {all|<num>} delete <ifname> in|out : Set for in packet or out packet all|<num> - All defined filters or specific filter’s number Parameters <ifname>...
  • Page 80 NEXPEED NBG440 User’s Manual Method 2 – The following filter is condition for incoming packets from the lan and s0 interface. (conf)# filter in 10 pass tcp src 10.0.1.20/32 dst 10.0.1.1/32:23 lan (conf)# filter in 20 block tcp dst 10.0.1.1/32:23 lan (conf)# filter in 10 block tcp dst 10.0.1.1/32:23 s0...

  • Page 81: Configuring Nat

    NEXPEED NBG440 User’s Manual Configuring NAT To connect to the Internet or any other TCP/IP network, a host must have an IP address that is unique within that network. The Internet and other large TCP/IP networks guarantee the uniqueness of addresses by creating central authorities that assign official IP addresses. However, many local networks use private IP addresses that are unique only on the local network.
  • Page 82 NEXPEED NBG440 User’s Manual Configuring PAT Step1> Create the global IP address pool. It is possible to set up multiple pools, but the overlapping of the range of IP addresses for each pool is not allowed. COMMAND (conf)# nat pool <poolname> <global-startip> <global-endip>...
  • Page 83 NEXPEED NBG440 User’s Manual Verifying the NAT configuration Displays all pools and maps for NAT translation. COMMAND (conf)# show nat map Viewing the translation-table entries Displays all entries in the translation table. COMMAND (conf)# show nat entry [-v] Parameters -v : displays detail information for the entry Deleting translation-table entries All entries or a particular entry of the NAT table can be deleted.
  • Page 84 NEXPEED NBG440 User’s Manual Inbound access control (allows access to your local server while using PAT) By default, all external attempts to access internal hosts are denied, and you must configure specific access. For example, you can configure one "nat entry" command that permits a host on the Internet (foreign host) to access your corporate (internal) server using any port service (such as WWW).
  • Page 85 NEXPEED NBG440 User’s Manual > UDP translations time out after 120 seconds > ICMP translations time out after 10 seconds You can manually change timeouts using the following command : COMMAND (conf)# nat timeout tcp|udp|icmp <seconds> tcp : TCP translation...
  • Page 86 NEXPEED NBG440 User’s Manual Configuring dynamic mapping Usually, this method takes a dynamic n:n translation. The translations between local IP addresses and global IP addresses are dynamic. Step1> Create the global IP address pool. It is possible to set up multiple pools, but the overlapping of the range of IP addresses for each pool is not allowed.
  • Page 87 NEXPEED NBG440 User’s Manual Verifying the NAT configuration Displays all pools and maps for NAT translation. COMMAND (conf)# show nat map Viewing the translation-table entries Displays all entries in the translation table. COMMAND (conf)# show nat entry [-v] Parameters -v : displays detail information for the entry Deleting translation-table entries All entries or a particular entry of the NAT table can be deleted.

  • Page 88: Configuring Rip

    NEXPEED NBG440 User’s Manual Configuring RIP The NBG440 router supports RIP1 and RIP2 to configuring the dynamic route. The Routing Information Protocol (RIP) is one of the most popular protocols currently in use. It is a classical distance-vector routing protocol. RIP is documented in RFC 1058.
  • Page 89 NEXPEED NBG440 User’s Manual To set or clear RIP options on an interface, use the following command. (conf)# rip enable|disable <ifname> rxrip1|txrip1|rxrip2|txrip2 COMMAND (conf)# rip enable|disable <ifname> rxdefault|txdefault <ifname> - interface name rxrip1: Receive and process RIP-1 packets only txrip1: Transmit RIP-1 packets only...
  • Page 90 NEXPEED NBG440 User’s Manual Sending RIP packets manually to the specified interface COMMAND (conf)# rip send <ifname> v1|v2 Usage Examples: (conf)# rip send s0 v2 immediately sends version 2 updates to the s0 link. ☞ Viewing your RIP Interfaces Displays RIP interfaces.

  • Page 91: Load Balancing And Line-Backup

    NEXPEED NBG440 User’s Manual Load Balancing and Line-Backup NBG440 that has more than one WAN port offer the functionality of Load Balancing so it enables to increase the bandwidth. Load Balancing There are a few methods to increase the bandwidth in the case of more than 1 channel.
  • Page 92 NEXPEED NBG440 User’s Manual Configuring Load-Balancing In the following topology, two routers, NBG440 #1 and NBG440 #2, connect back-to-back over two SHDSL interfaces (s0 and s1) with high-level data link control (HDLC) encapsulation. The LAN interface is connected with a local network device (hub or switch). The LAN interface supports either 10BaseT or 100BaseTx connection.
  • Page 93 NEXPEED NBG440 User’s Manual Note: The above example assumes the interconnection of 10.0.1.0 network and 10.0.2.0 network. So refer to the below configuration in the case of the connection between the ISP and the customer. Configuration for NBG440 #1 Configuration for NBG440 #2...
  • Page 94 NEXPEED NBG440 User’s Manual Configuration for NBG440 #1 Configuration for NBG440 #2 (conf)# device s0 gshdsl co 2320 (conf)# device s0 gshdsl rt (conf)# device s1 gshdsl co 512 (conf)# device s1 gshdsl rt (conf)# interface lan ip 10.0.1.1 255.255.255.0 (conf)# interface lan ip 10.0.2.1 255.255.255.0...

  • Page 95: Part V: System Maintenance

    NEXPEED NBG440 User’s Manual PART V: System maintenance □ Accessing the router through Telnet □ Configuring SNMP □ Upgrading the System Software □ Setting the Host name, Date and Time NexComm Systems, Inc. 94 PAGE...

  • Page 96: Accessing The Router Through Telnet

    NEXPEED NBG440 User’s Manual Accessing the router through Telnet You can make use of a console cable to perform a serial communication between the NBG440 unit and the user's PC in order to configure the router. Also, the network-connected users can configure the router by means of the Telnet application provided from the user's PC through the network.

  • Page 97: Configuring Snmp

    NEXPEED NBG440 User’s Manual Configuring SNMP As one of the most popular protocols for the network trouble management, the SNMP (Simple Network Management Protocol) provides users with various kinds of information regarding the network equipment and their failures with help of communication between the SNMP manager and agent.
  • Page 98 NEXPEED NBG440 User’s Manual Registering a SNMP Manager By default, SNMP is not configured. To add a SNMP manager, use the following command. (conf)# snmp <address> <community> read|rdwr COMMAND [trapon|trapoff] <address> - IP address of SNMP manager station <community> - Specifies the SNMP community name read|rdwr : sets an authority, Allow read-only or allow read and write.
  • Page 99 NEXPEED NBG440 User’s Manual Viewing the SNMP configuration Displays the SNMP configuration. COMMAND (conf)# show snmp Sending ‘cold-start Trap’ to the Manager manually COMMAND (conf)# snmp start Deleting the SNMP Manager COMMAND (conf)# snmp del <address> <address> - Delete SNMP manager corresponding to the...

  • Page 100: Upgrading The System Software

    NEXPEED NBG440 User’s Manual Upgrading the System Software The NBG440 unit can upgrade using TFTP (Trivial File Transfer Protocol). If a newer version of the software for your NBG440 unit is available, you be sure to perform any required preparatory tasks.
  • Page 101 NEXPEED NBG440 User’s Manual Step3: Reboot your router to verify whether the downloaded firmware is correct. And verifying firmware version after reboots. 1> First, you save current configuration to flash memory using following command : COMMAND (conf)# write config 2> Reboot your router to load new firmware to memory.
  • Page 102 NEXPEED NBG440 User’s Manual Configuration example NBG440 192.168.1.1 TFTP Server 192.168.1.2 1> Connect LAN port on the NBG440 router to your PC(TFTP Server) using UTP crossover cable. 2> Configure “192.168.1.1/255.255.255.0” IP address on your router. (conf)# write config => saves current configurations to flash memory.
  • Page 103 NEXPEED NBG440 User’s Manual (conf)# write tftp => saves the downloaded new firmware to flash memory. image checksum OK WARNING !!! this may crash your system, check again: boot image information: - image start : 0xf80000 - image end : 0xfd6ea7...

  • Page 104: Setting The Host Name, Date And Time

    NEXPEED NBG440 User’s Manual Setting the Host name, Date and Time This chapter shows you how to set the router’s system name, date and time. Setting the Host Name Use the hostname command to set the name of the router. To change the hostname, you must be in the configuration mode.
  • Page 105 NEXPEED NBG440 User’s Manual Configuring SNTP (Simple Network Time Protocol) NBG440 SNTP offers client to obtain accurate date and time from one of the many public time servers or a local server. After you set up SNTP, you must save your changes to flash memory using write config command.
  • Page 106 NEXPEED NBG440 User’s Manual Step2: Offset from UTC. The network time servers keep time using coordinated Universal Time (abbreviated UTC) and a twenty four hour clock. UTC is also known as GMT, or Greenwich Mean Time. To convert UTC to local time, you have to add or subtract hours from it using the following command.
  • Page 107 NEXPEED NBG440 User’s Manual CST - Central Standard -6 hours 6 am MDT - Mountain Daylight MST - Mountain Standard -7 hours 5 am PDT - Pacific Daylight PST - Pacific Standard -8 hours 4 am ADT - Alaskan Daylight...

  • Page 108: Part Vi: Configuration Examples

    NEXPEED NBG440 User’s Manual PART VI: Configuration Examples □ Bridging Configuration in 4-wire mode □ Routing Configuration in 4-wire mode □ Bridging Configuration in 2-wire mode □ Bridging Configuration using the MX0 interface NexComm Systems, Inc. 107 PAGE...

  • Page 109: Example1. Bridging Configuration In 4-Wire Mode

    NEXPEED NBG440 User’s Manual Example1. Bridging Configuration in 4-wire mode This example explains how to connect two NBG440 routers using 4 wires, with the bridging configuration method. [Network Diagram] Internet Gateway NBG440 (CO) NBG440 (RT) switch switch SHDSL (4608Kbps) A company has received a C class , 256 IP addresses from 203.247.170.0 to 203.247.170.255 and will configure local area network(LAN) with this addresses.
  • Page 110 NEXPEED NBG440 User’s Manual Configuring NBG440(CO): ① Use the console port for the configuration. Connect the CONSOLE port to a serial (COM) port of your computer using the console cable (the enclosed cable in the box). Use a terminal emulation program with the following parameters: 9600 bps, No parity, 8 data bits, 1 stop bit, NO flow control / VT100 terminal emulation ②...
  • Page 111 NEXPEED NBG440 User’s Manual Configuring NBG440(RT): ① Use the console port for the configuration. Connect the CONSOLE port to a serial (COM) port of your computer using the console cable (the enclosed cable in the box). Use a terminal emulation program with the following parameters: 9600 bps, No parity, 8 data bits, 1 stop bit, NO flow control / VT100 terminal emulation ②...

  • Page 112: Example2. Routing Configuration In 4-Wire Mode

    NEXPEED NBG440 User’s Manual Example2. Routing Configuration in 4-wire mode This example explains how to connect two NBG440 routers using 4 wires, with the routing configuration method. [Network Diagram] Internet network B network A 210.16.1.0/ 25 203.247.170.0/ 27 Gateway NBG440 (CO)
  • Page 113 NEXPEED NBG440 User’s Manual Configuring NBG440(CO): ① Use the console port for the configuration. Connect the CONSOLE port to a serial (COM) port of your computer using the console cable (the enclosed cable in the box). Use a terminal emulation program with the following parameters: 9600 bps, No parity, 8 data bits, 1 stop bit, NO flow control / VT100 terminal emulation ②...
  • Page 114 NEXPEED NBG440 User’s Manual ⑪ Save the current configuration to Flash memory. NBG440(conf)# write config ⑫ Reboot your system. NBG440(conf)# reboot flash Configuring NBG440(RT): ① Use the console port for the configuration. Connect the CONSOLE port to a serial (COM) port of your computer using the console cable (the enclosed cable in the box).
  • Page 115 NEXPEED NBG440 User’s Manual ⑧ Set the default gateway. NBG440(conf)# ip route add default s0 ⑨ Save the current configuration to Flash memory. NBG440(conf)# write config ⑩ Reboot your system. NBG440(conf)# reboot flash NexComm Systems, Inc. 114 PAGE...

  • Page 116: Example3. Bridging Configuration In 2-Wire Mode

    NEXPEED NBG440 User’s Manual Example3. Bridging Configuration in 2-wire mode This example explains how to connect one NBG440 unit to two NBG420 units using 2 wires, with the bridging configuration method. [Network Diagram] Internet SHDSL (max.2320Kbps) Gateway NBG420 (RT) NBG440 (CO)
  • Page 117 NEXPEED NBG440 User’s Manual Configuring NBG440(CO): ① Use the console port for the configuration. Connect the CONSOLE port to a serial (COM) port of your computer using the console cable (the enclosed cable in the box). Use a terminal emulation program with the following parameters: 9600 bps, No parity, 8 data bits, 1 stop bit, NO flow control / VT100 terminal emulation ②...
  • Page 118 NEXPEED NBG440 User’s Manual ⑨ Save the current configuration to Flash memory. NBG440(conf)# write config ⑩ Reboot your system. NBG440(conf)# reboot flash NexComm Systems, Inc. 117 PAGE...

  • Page 119: Example4. Bridging Configuration Using The Mx0 Interface

    NEXPEED NBG440 User’s Manual Example4. Bridging Configuration using the MX0 interface This example explains how to connect two NBG440 routers using 4 wires, with the bridging configuration method. This example explains how to bind two ports in 2-wire mode. [Network Diagram]...
  • Page 120 NEXPEED NBG440 User’s Manual Configuring NBG440(CO): ① Use the console port for the configuration. Connect the CONSOLE port to a serial (COM) port of your computer using the console cable (the enclosed cable in the box). Use a terminal emulation program with the following parameters: 9600 bps, No parity, 8 data bits, 1 stop bit, NO flow control / VT100 terminal emulation ②...
  • Page 121 NEXPEED NBG440 User’s Manual NBG440(conf)# ip routing disable lan ⑩ Set the default gateway (for remote management). (If you don’t configure the default gateway, skip this step.) NBG440(conf)# ip route add default lan 203.247.170.1 ⑪ Save the current configuration to Flash memory.
  • Page 122 NEXPEED NBG440 User’s Manual ⑥ Set the device type, side and a line rate of each SHDSL port. NBG440(conf)# device s0 gshdsl rt NBG440(conf)# device s1 gshdsl rt ⑦ Bind two ports (s0, s1) into the mx0 interface. NBG440(conf)# device mx0 bind s0 NBG440(conf)# device mx0 bind s1 Set Bridging mode to the mx0 interface.

  • Page 123: Appendix

    NEXPEED NBG440 User’s Manual Appendix □ Connector Pin-outs NexComm Systems, Inc. 122 PAGE...

  • Page 124: Connector Pin-Outs

    NEXPEED NBG440 User’s Manual Connector Pin-outs A.1 LAN Port The LAN port uses an Ethernet port and supports 10/100Mbps(auto) speed on the UTP cable at a distance of up to 100 meters or less. The Ethernet connector is a RJ-45. Table A-1 lists the pin-outs for the Ethernet connector (labeled "LAN").
  • Page 125 NEXPEED NBG440 User’s Manual A.3 SHDSL Port The Symmetric High-bit-rate Digital Subscriber Line (SHDSL) ports use RJ-45 connector. Table A-3 shows the connector pin-outs for the SHDSL connector (labeled “LINE”). RJ- 45 5 6 7 8 Ring Ring The NBG440 unit enables transmission of two SHDSL links on the same physical cable.

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