Paradyne Routers manual Dynamic Host Configuration Protocol Dhcp Server, IP Options Processing

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Configuring the DSL Router

IP Options Processing

The NAT and NAPT functions handle and process the IP datagrams with options set as described below. No command is available to set IP options.

The DSL Router does not process (and drops) any IP datagrams with the following IP options:

HLoose source and record route (type 131)

HStrict source and record route (type 133)

HSecurity (type 130)

HStream ID (type 136)

The DSL Router does process IP datagrams with the following IP options, but does not provide its IP address or timestamp information in the response message:

HRecord route (type 7)

HTimestamp (type 68)

Applications Supported by NAT

The DSL routers support the following applications and protocols:

HFTP

HHTTP

HNetMeeting

HPing

HRealPlayer

HTelnet

HTFTP

Dynamic Host Configuration Protocol (DHCP) Server

The DSL router provides a DHCP Server feature as specified in RFC 2131, Dynamic Host Configuration Protocol, and RFC 2132, DHCP Option and BOOTP Vendor Extensions. DHCP is the protocol used for automatic IP address assignment.

DHCP setup considerations:

HThe range of IP addresses to be used by the DHCP server must be configured. The maximum number of clients is 256.

HThe DHCP server must be enabled.

6371-A2-GB20-10

August 2000

3-7

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Contents HOTWIRE DSL Routers Copyright E 2000 Paradyne Corporation All rights reserved Contents Configuring the DSL Router Monitoring the DSL Router Index Document Purpose and Intended Audience About This GuideSection Description Document SummaryDocument Number Document Title Product-Related DocumentsSyntax Translation Document ConventionsIntroduction to Hotwire DSL Routers What is a Hotwire DSL Router?DSL Technologies Supported Network Access Provider NAP Typical DSL Router SystemOptional IP routing with Hotwire DSL Router FeaturesService Subscriber Accessing the DSL Router Access Control to the DSL RouterLevels of Access Show console Changing Access Session LevelsLocal Console Access Admin enableSetting Up the New Users Login CUSTOMER#. Type configure terminal and press EnterInvalid Characters Value Ascii Hex Translation Local console disabled by conflict Telnet AccessDetermining the Current Access Level Determining the Available CommandsUsing the List Command Exiting from the SystemChanging the System Identity If you are accessing the DSL router Then Manually Logging OutAutomatically Logging Out Configuring the DSL Router Overview of DSL Router ConfigurationInterfaces for the DSL Router Ethernet and DSL Interface Identifiers Service Domain IP Address AssignmentsNumbered DSL Interface Unnumbered DSL InterfaceSimplified Network Topology Network Considerations IP RoutingProxy ARP Address Resolution Protocol ARPNetwork Address Translation NAT Basic NATNetwork Address Port Translation Napt Dynamic Host Configuration Protocol Dhcp Server IP Options ProcessingApplications Supported by NAT Dhcp Relay Agent Security IP FilteringLand Bug/Smurf Attack Prevention Routed vs. Bridged PDUs Routed Network Model Standard modeConfiguration Examples DSL Router Configuration ExamplesCustomer Premises CP Basic Configuration ExampleNAT Mapping Public IP Addresses Private IP Addresses Basic NAT Configuration ExampleNapt Mapping Public IP Addresses Private IP Addresses Napt Configuration ExampleCore Router 155.1.3.253 Console Port Connection Dhcp Relay with Proxy ARP Configuration Example Public IP Addresses for Basic NAT Private IP Addresses Dhcp Server with Basic NAT Configuration ExampleDownstream Router Configuration Example Detecting Problems Monitoring the DSL RouterWhat to Monitor ± Ethernet Link up down Status of InterfacesShow interface Show interface eth1 dsl1Interface Statistics Show statisticsShow statistics eth1 dsl1 ip Discard Reasons for the Ethernet Interface eth1 1 Clearing StatisticsList of Discard Reasons Clear statistics eth1 dsl1 ipDiscard Reasons for the DSL Interface dsl1 1 Discard Reasons for the Ethernet Interface eth1 2Discard Reasons for IP Discard Reasons for the DSL Interface dsl1 2Show alarms Diagnostics and TroubleshootingDiagnostics and Troubleshooting Overview Alarms InquirySyslog ip ip-addr Syslog enable disableSystem Log Show syslogSyslog Messages 1 Level Description Event Syslog EventsSyslog level level Show log numberSyslog Message Display Syslog Messages 2 Level Description EventReporting Ping reply x.x.x.x Request Timed OUT PingPing Test Results Ping reply x.x.x.x bytes of data=nnTraceRoute TraceRoute Test ResultsX.x Command Line Interface Feature Command Line InterfaceCommand Recall NavigationDocument Conventions Ethernet Frame Format Command Line Interface CommandsConfiguration Control Commands RFC 1483 EncapsulationInterface and Service Domain IP Address IP Routing Table Delete eth1ifn dsl1ifnIp route create dest-ipdest-mask next-hop-ip remote Ip route purge Proxy ARP ARP TableNat basic address ip-addrip-mask Nat basic enableNat napt enable Nat timeout timeNat napt delete udp tcp port Nat basic delete private-ipNat purge Nat disableDhcp server enable disable Dhcp ServerDhcp Relay Agent IP Packet Processing IP multicast enable disableIP processing enable disable Trap disable enable name of trapShow Command Outputs Show configNAT disabled or NAT enabled basic NAT Napt Show arp Show arp timeoutNAT timeout xx minutes NAT basic mappings Show ip route ip-addressShow NAT napt Show trapsShow dhcp server Sample show dhcp relay display Show alarms Show syslog Show log #Show Dhcp relay Show interface Show statisticsConfiguration Default Settings Configuration Defaults Command Line ShortcutsCustomer ParadyneAbc123 BytesTable B-2. Command Line Input Shortcuts 1 Command Line Input ShortcutsTable B-2. Command Line Input Shortcuts 2 Show interface dsl1 eth1 Table B-2. Command Line Input Shortcuts 3Configuration Defaults & Command Line Shortcuts Traps & MIBs Snmp OverviewTraps Overview Variable Binding DSL Router TrapsSystem Group MIBs OverviewStandard MIBs MIB II RFCSystem Ssssssssssss Boot bb.bb.bb 2nd Boot xx.xx.xx DSPYy.yy.yy H/W Releasezzz CCA part numberº Interfaces Group RFCInterfaces IfEntryIfOperStatus Specifies the current DSL interface Table C-5. IP Group Objects 1 Description Setting/Contents Extension to Interfaces Table RFCIP Group RFC IP Cidr Route Group RFC Table C-5. IP Group Objects 2 Description Setting/ContentsIpCidrRouteEntry 11 ± Transmission GroupEthernet-Like MIB RFC Snmp GroupActive1 Paradyne Enterprise MIBsDevice Control MIB NoOp1Device Diagnostics MIB Traceroute ApplpingTestEntryConfigure ApplTracerouteResultsEntryAppTracerouteResultsEntry Health and Status MIB DevStatus1DevStatus Factory1-to-active8 Configuration MIBSecondary Interface Configuration MIBPdnInetIpAddressTableEntry PrimaryDhcp MIB DSL Endpoint MIB Syslog MIB Accessing the List Command Output DSL Router Terminal EmulationDSL Router Terminal Emulation Terminal Emulation Programs Numbers IndexIN-2 IN-3