Network Problems, High-Level Troubleshooting | Paradyne 8310 MVLt

Diagnostics and Troubleshooting

Network Problems

To provide a practical aid in the isolation and resolution of Layer 2 network difficulties, the guidelines in this section provide information on troubleshooting a generic network containing the devices found in most networks.

The illustration below shows the generic network addressed by this chapter.

	ISP	Next Hop
	Gateway	Next Hop
	Gateway	Router	IPC	DSLAM
	Router	(NHR)	IPC	DSLAM
	Router	(NHR)
	ISP		WAN
	WAN	NMS
			NMS	SN
				SN

Service Domain

Management Domain

IPC = Interworking Packet Concentrator

ISP = Internet Service Provider

NMS = Network Management System

SN = Service Node

Clients

SN

Hub

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These procedures assume that Asynchronous Transfer Mode (ATM) is used on the link between the IPC and the next hop router (NHR).

High-Level Troubleshooting

The following high-level procedures help you isolate problems to a particular segment of the network.

HFor static clients, make sure the client can Ping its own IP address. This confirms the IP address was successfully accepted by the client computer.

HMake sure the client's default gateway is the same as the IP address for the Bridge Virtual Interface (BVI) on the appropriate ISP router.

HAn Address Resolution Protocol (ARP) table may have invalid entries if a recent configuration change took place anywhere on the network and not enough time has passed for the entry to expire. Check the ARP tables on the client, DSLAM, and router.

HMake sure a default route is configured on the MCC card (screen A-E-A).

8000-A2-GB26-10

January 1999

6-7

Image 85

Paradyne 8310 MVLt, 8510 RADSL manual Network Problems, High-Level Troubleshooting

Contents

HOTWIRE Dslam for 8310 MVL and 8510 Radsl Cards Copyright E 1999 Paradyne Corporation All rights reserved Contents Configuring the Hotwire Dslam Traps Contents Document Purpose and Intended Audience About This Guide Section Description Document Summary Document Number Document Title Product-Related Documents Viii What is the Hotwire DSLAM? Hotwire Dslam System Description Central Office CO Hotwire Dslam ComponentsOptional Input Hotwire Dslam Chassis Front View of a Hotwire 8800 or 8810 Dslam Chassis MCC Card Hotwire Dslam FeaturesRadsl or MVL Card Configuring the DSL Cards Levels of AccessSoftware Functionality Monitoring the DSL Cards Troubleshooting and Diagnostics Overview Hotwire Menus and Screens Menu and Screen Formats Components of a Hotwire Menu Components of a Hotwire Screen Keys Definition Commonly Used Navigation Keys Hotwire Chassis Main Menu Hotwire Menu HierarchyHotwire ± MCC Menu Hotwire Chassis Hotwire DSL Hotwire ± DSL MenuDiagnostics Applications DSL Card Configuration Menu DSL Card Monitoring Menu Logging In to the System User Login Screen Reviewing the Levels of Access Card Selection Screen D U X X Column Position Display Description Heading Exiting from the System Accessing the Hotwire ± DSL MenuManually Logging Out Automatically Logging Out Service Domain Configuring the Hotwire DslamDomain Types Management Domain For each DSL card, to See Configuring the DSL Cards Configuring VNIDs on a DSL Card Configuring the Active Vnid on each DSL Port Addressing a Location Using Dhcp Configuring Static Users Configuring Subnet Masks Configuring Subnet Addressing Configuring IP Filter Rules Configuring the Hotwire Dslam DSL Configuration Card Status Screens MVL and 8510 Radsl Card Configuration Card Info Card Information Card Status Options 1Time/Date Nvram Clear Card Reset Nvram Cfg Loader Nvram Configuration LoaderCard Status Options 2 DOS Machine Download Code Download Code and Apply Download F a and B Card Status Options 3Download Code a or Apply Download B Apply Download B Ports Options 1 DSL Configuration Ports ScreensEthernet Port DSL Ports Radsl Parameters 8510 Radsl Card Ports Options 2 DSL Ports MVL Parameters 8310 MVL Card Ports Options 3 DSL Configuration Interfaces Screens General General Interfaces Interfaces OptionsControl Control Interfaces DSL Configuration Bridge Screens DSL Configuration Users Screens General General Bridge Parameters Bridge Options 1Card Vnid Port Vnid Client Vnid Bridge Options 2 ARP Entry Add ARP Entry B Bridge Options 3 DSL Configuration Service Node Screens SN Configuration Service Node Options DSL Configuration Filters Screen Filters Options 1 IP Filters IP Filter Configuration screenIP Filters IP Filter Table Filters Options 2 IP Filters IP Filter ConfigurationDestination Address ± nnn.nnn.nnn.nnn format DSL Monitoring Card Status Screens Monitoring the Hotwire Dslam Card Status Options Login HistoryCard Info General Card Information Syslog Screen Example Physical Layer Options 1 DSL Monitoring Physical Layer ScreensActive List Active Ports List Ethernet Stats Ethernet Statistics Physical Layer Options 2 EtherHDLC Stats EtherHDLC Statistics Physical Layer Options 3Initialized EtherHDLC Ports ± s1c, s1d, s1e, or s1f DSL Link Perf DSL Link Performance Summary Physical Layer Options 4 DSL Perf Stats DSL Performance Stats Physical Layer Options 5Customer Data Physical Layer Options 6 DSL Error StatsDSL Xmit Status DSL Transmit Stats DSL Monitoring Interfaces Screens Active List Active Interfaces List Monitor Interfaces OptionsStatus Interface Status DSL Network Protocol Screens Socket Statistics Network Protocol Options 1UDP Statistics TCP Statistics TCP Data Statistics Network Protocol Options 2 TCP Connection Statistics Network Protocol Options 3IP Statistics Icmp Statistics Icmp Packet Statistics Network Protocol Options 4Snmp Statistics Network Protocol Options 5 Snmp Authentication Statistics Bridge Table DSL Bridge Screens Client MAC TableItem to Display ± Entry number ARP Table Vnid DSL SN Information Screen DSL Monitoring IP Filters Screen Default filter action ± Forward/discardIP Filters Filter Table Diagnostic Screens Diagnostics and Troubleshooting Alarms Card Alarms Diagnostics OptionsSelftest DSL Packet Echo Test Checking Alarms TroubleshootingMajor Alarms 1 Action No Response at Startup Major Alarms 2 Action Margin Threshold Minor Alarms 1 Action Link Down Minor Alarms 2 ActionThreshold High-Level Troubleshooting Network Problems Client Cannot Ping the Gateway Router Client-to-Service Node SegmentIf the Client cannot Ping the Gateway Router Then Client-to-Service Node Segment Layer Solution Client Cannot Reach Service NodeLayer 1 ± Physical Client Cannot Reach Dslam Service Node-to-DSLAM Segment 1 Layer SolutionLayer 1 ± Physical Layer 2 ± Service Node-to-DSLAM Segment 2 Layer SolutionNetwork Client Cannot Reach IPC Movefromdef=1 DSLAM-to-IPC Segment Layer Solution Client Cannot Reach Router IPC-to-Router Segment Layer Solution Router-to-IPC Segment Layer Solution Cannot Upload Configurations to a Unix Server Examining Performance Issues Go To Performance Issues ± Viewing Network Statistics Download Code Download Only System Automatic Immediate Apply Download Code DSL Card Traps TrapsEvent Severity Comment Trap # Traps MIB Traps Glossary Dhcp Relay Agent Default routeDhcp Server Domain Host routes HostHub Internet OpenLane DCE Service NodeManager Packet Subnet address Static routeSubnet mask Telnet GL-6 IN-1 Index IN-2