Cisco Systems CISCO1750 manual Troubleshooting Isdn

Page 53

 

 

 

 

 

 

Problem Solving

 

Table 3

Troubleshooting the Power System

 

 

 

 

Symptom

 

Possible Solution(s)

 

 

 

The router is on, but the front-panel

The power supply has failed. Return the router to your

PWR LED is off.

Cisco reseller.

 

 

 

The front-panel PWR LED is on, the

The power supply has failed. Return the router to your

front-panel OK LED is off, and the

Cisco reseller.

router does not pass console or EIA

 

 

data.

 

 

 

 

 

 

 

Troubleshooting ISDN

Because ISDN uses many variables and supports many different configurations, it sometimes can cause problems for the router. This section describes problems related to the ISDN line that might occur.

Two commands are useful when troubleshooting ISDN:

•For routers with an ISDN S/T WIC, enter the clear interface command to terminate any active ISDN calls and to reset the ISDN BRI interface. Do this for each ISDN port installed in the router:

Router# clear interface bri0

Router# clear interface bri1

•For routers with an ISDN U WIC, use the clear controller command to terminate any active ISDN calls, to reset the ISDN BRI interface, and to reset the ISDN line between the router and the central office switch. Do this for each ISDN port installed in the router:

Router# clear controller bri0

Router# clear controller bri1

Table 4 lists troubleshooting methods for ISDN-specific problems that might occur.

Cisco 1750 Router Hardware Installation Guide

 

78-6169-02

xi

 

Page 52 Page 54
Image 53
Page 52 Page 54
Contents Cisco 1750 Router Hardware Installation Guide Page Cisco 1750 Router Hardware Installation Guide Page Router Memory CommandsTechnical Specifications Problem SolvingCabling Specifications Ethernet CablesLocating Modules C-v Viii About This Guide Related Publications Audience and ScopeOrganization Conventions Xii Xiii Description CommandsCisco 1750 Router Overview Feature Description Key FeaturesIii Rear-Panel Ports and LEDs Connector/Slot Label/Color DescriptionEthernet AUXLED Label Color Description Connector/SlotColor Supported LED Meaning Front-Panel LEDsCards COL ACTSlotø Portø IsdnVIC-2E&M VIC-2FXO VIC-2FXS SLOT2 Portø SLOT1 PortøVIC-2E&M VIC-2FXO VIC-2FXS PORT1Types of Memory Router Memory1750# show version Amounts of MemoryAdditional Required Equipment Equipment When You Use ItUnpacking the Router NT1 Types, refer to the Cisco WAN Interface Cards HardwareBefore Installing the Router InstallationConnecting the Router to Your Local Network Iii Connecting the Router to the Local Network Safety Information Installing WICs and VICsInstalling WICs and VICs Removing a WIC or VIC Slot Cover Connecting Power to the Router Connecting Power to the RouterConnecting the Power Supply Optional Installation Steps Verifying Your InstallationConnecting a PC Connecting the Console Cable to the Router 1750 Connecting a ModemWall-Mount Brackets-Bottom of Router Wall-Mounting78-6169-02 Xvi Contacting Cisco or Your Reseller TroubleshootingChanging the Configuration Register Recovering a Lost PasswordConfiguration register is Resetting the Router Resetting the Password Resetting the Configuration Register Value Problem SolvingNumber of Blinks Meaning OK LED DiagnosticsRouter#show diag Slot Troubleshooting WICs and VICsCisco WAN Interface Cards Hardware Installation Guide Symptom Possible SolutionsCompliance and Safety Information for the Cisco 1600 Troubleshooting the Power SystemTroubleshooting Isdn Isdn U Symptom Check the Following Possible SolutionsIsdn S/T Use show isdn status Xiv Description Specification Technical SpecificationsCisco 1750 Router Hardware Installation Guide 78-6169-02 Ethernet Cables Cabling SpecificationsSpecification 10BaseT 100BaseTX RJ-45 Pin Signal DirectionEthernet Network Cabling Guidelines TX+ RX+Console Cable and Adapters Signal RJ-45 Pin DB-9 Pin DB-25 PinUTP Console TerminalIdentifying a Rollover Cable TXD RXD GND DSR DTR CTS RTSVIC Cables and Pinouts Shows how to connect the VICs to the networkPin Signal Description Pin SignalLead Signaling output Signaling ground Return Viii Safety Information Installing and Upgrading Memory and Data ModulesPage Opening the Chassis Removing the Chassis Screws Cisco 1750 Motherboard-Module Locations Locating ModulesRemoving a Mini-Flash Module Installing a Mini-Flash ModuleRemoving a Mini-Flash Module Installing a Mini-Flash Module Installing a Dimm Installing a Dual In-Line Memory ModuleInstalling a Pvdm Installing a Packet Voice Data ModuleClosing the Chassis Closing the Chassis D E Enable Enable secret Isdn switch-type IOS OK LED Index Index

CISCO1750 specifications

The Cisco Systems CISCO1750 is a versatile, high-performance router designed to meet the needs of medium-sized businesses and enterprise environments. Known for its reliability and scalability, the CISCO1750 serves as a gateway to advanced networking solutions, offering a range of features and technologies that enhance functionality and connectivity.

One of the main characteristics of the CISCO1750 is its modular design, allowing users to customize the router according to their specific requirements. With various interface cards and network modules available, users can expand the router's capabilities to accommodate additional connections and services. This modularity makes the CISCO1750 a cost-effective solution, as organizations can invest in the hardware they need without overspending on unnecessary features.

The CISCO1750 supports multiple WAN interfaces, including T1/E1 and DSL connections, making it suitable for diverse network environments. It also includes integrated Ethernet switching, supporting both Fast Ethernet and Gigabit Ethernet interfaces. This allows the router to handle high-speed data transfers efficiently while ensuring reliable connectivity between various local devices.

In terms of software capabilities, the CISCO1750 runs on the Cisco IOS (Internetwork Operating System), providing advanced routing protocols like OSPF, EIGRP, and BGP. This enables the router to efficiently manage network traffic, optimize performance, and ensure high availability. The inclusion of advanced security features, such as IPsec VPN support and access control lists, helps safeguard sensitive data while maintaining robust network integrity.

Scalability is another key feature of the CISCO1750. As organizations grow and their networking needs evolve, the router can adapt by supporting additional users and devices. The device can also be integrated with other Cisco products for a unified networking infrastructure, ensuring seamless operations across the entire organization.

The CISCO1750 is designed with a focus on ease of management. Users can configure and monitor the device through a user-friendly command-line interface or GUI-based management tools. Additionally, the router supports SNMP (Simple Network Management Protocol), enabling administrators to monitor network performance and troubleshoot issues effectively.

In summary, the Cisco Systems CISCO1750 is a powerful and flexible router that meets the demands of modern enterprise networking. With its modular design, support for various interfaces, advanced routing capabilities, robust security features, and ease of management, it stands out as a reliable choice for organizations looking to enhance their network infrastructure.
Top Page Image Contents