Cisco Systems CISCO1841-HSEC/K9-RF Interface Numbering on the 1861 Integrated Services Router

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Chapter 2 Overview of Cisco 1800 Series Routers (Modular)

Interface Numbering on the 1861 Integrated Services Router

Interface Numbering on the 1861 Integrated Services Router

Each interface (port) on a Cisco 1861 ISR is identified by a number. The Cisco 1861 router contains the following WANLAN interface types:

•One onboard Fast Ethernet LAN interface (FastEthernet0/0)

•One onboard Ethernet switch

•One fixed VIC slot with 4 FXS ports

•One fixed VIC slot with 4 FXO or 2 BRI ports

•One modular HWIC/WIC/VWIC slot

The numbering format for the slots is interface-type0/slot-number/port-number. Table 2-7summarizes the interface numbering.

Table 2-7

Interface Numbering

 

 

 

 

 

 

 

Slot Number

 

Slot Type

Slot Numbering Range

Example1

Onboard Ports

 

Fast Ethernet

0/0

interface fastethernet 0/0

 

 

 

 

 

Onboad Slot 1

 

Fast Ethernet Switch

0/1/0 to 0/1/7

interface fastethernet 0/1/0

 

 

 

 

Fixed HWIC slot 0

FXS

0/0/0 to 0/0/3

voice-port 0/0/0/

 

 

 

 

Fixed HWIC slot 1

FXO

0/1/0 to 0/1/3

voice-port 0/1/0

 

 

 

 

 

 

 

BRI

0/1/0 to 0/1/1

 

 

 

 

 

Modular HWIC Slot

HWIC/WIC/VWIC

0/3/0 to 0/3/x, where x

interface serial 0/0/0

 

 

 

depends on the

 

 

 

 

card-type.

 

 

 

 

 

 

1. The interfaces listed are examples only; other possible interface types are not listed.

Note On the Cisco 1861 ISR, the numbering format for configuring an asynchronous, or async, interface is 0/slot/port. To configure the line associated with an async interface, simply use the interface number to specify the async line. For example, line 0/0/0 specifies the line associated with interface serial 0/0/0 on a WIC-2A/S in slot 0. Similarly, line 0/1/1 specifies the line associated with interface async 0/1/1 on a WIC-2AM in slot 1.

Note If you have specified the use of a private line automatic ringdown (PLAR) off-premises extension (OPX) connection mode for an FXO voice port (with loop resistance less than 8000 Ohm), you must ensure that the soft-offhook option is enabled on the port.

This option allows a stepped offhook resistance during seizure, which avoids overloading the circuit during offhook in the event that ringing voltage is present on the circuit at the same time as the trunk seizure. The stepped offhook resistance is initially set to 800 Ohms, then adjusts to 50 Ohms when ringing voltage is not present.

To enable the soft-offhookcommand on the port, and to access the connection command with plar opx syntax, see Cisco Command Lookup Tool.

Cisco 1800 Series Routers (Modular) Hardware Installation Guide

2-10

OL-5876-03

 

 

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Contents Americas Headquarters Text Part Number OL-5876-03Copyright 2005-2008 Cisco Systems, Inc. All rights reserved Interfaces on the Cisco 1861 Integrated Services Router Site Log LED Indicators Modular Objectives Organization AudienceTitle Description Conventions Safety WarningsConvention Description Bewaar Deze Instructies Avvertenza Importanti Istruzioni Sulla Sicurezza Warnung Wichtige SicherheitshinweiseAviso Instruções Importantes DE Segurança Spara Dessa Anvisningar GEM Disse Anvisninger OL-5876-03 Related Documentation Cisco One-Year Limited Hardware Warranty Terms Duration of Hardware WarrantyTo Receive a Return Materials Authorization RMA Number Replacement, Repair, or Refund Policy for HardwareSearching for Cisco Documents OL-5876-03 Overview of Cisco 1800 Series Routers Modular Hardware Features Product Serial Number Location,Interfaces Product Serial Number LocationCisco Product Identification Tool Interfaces on the Cisco 1841 Router Interfaces on the Cisco 1861 Integrated Services RouterDescription Label Memory Removable and Interchangeable ModulesModel CompactFlash Memory Interface Cards AIMs Description Specification LED IndicatorsColor Description Location Chassis Ventilation Real-Time ClockChassis Views Chassis SecuritySlot Number Slot Type Interface NumberingExample Interface Numbering on the 1861 Integrated Services Router Specifications Regulatory ComplianceOL-5876-03 Safety Recommendations Safety with Electricity General Site Requirements Power Supply ConsiderationsPreventing Electrostatic Discharge Damage Site Configuration Installation ChecklistSite Environment Site Log Task Verified by DateInspecting the Router Items in the Box for the Cisco 1841 RouterAssembly hardware screws OL-5876-03 Internal Components Plug-In ComponentsInterfaces on the Cisco 1861 Integrated Services Router Setting Up the Chassis Setting the Chassis on a DesktopAttaching Rack-Mount Brackets 1shows the bracketsInstalling the Router in a Rack Mounting the Chassis in a Rack TypicalChassis Grounding Wall-Mounting the ChassisWall-Mounting the Cisco 1841 Router Wall Router Mounting screws Wall-Mounting the Cisco 1861 Integrated Services Router Rack-Mounting the Cisco 1861 Integrated Services Router Wall-Mount Bracket for Power SupplyBrackets for Rack-Mounting Power Supply Installing the Chassis Ground Connection 11 Chassis Ground Connection on the Cisco 1841 Router 12 Attaching the Ground Wire to the Chassis OL-5876-03 Console and Auxiliary Port Considerations Console Port ConnectionsAuxiliary Port Connections Preparing to Connect to a NetworkEthernet Connections Configuring Serial Connections Signaling Standards SupportedSerial Connections Serial DTE or DCE DevicesAsynchronous/Synchronous Serial Module Baud Rates Distance LimitationsDistance for CSU/DSU Connections Isdn BRI ConnectionsLow-Capacitance Cable OL-5876-03 Power Connections Series Routers ModularPorts and Cabling Connecting WAN and LAN CablesPort Type, Color Connected to Cable Connecting to a Console Terminal or Modem Connection Procedures and PrecautionsConnecting to the Console Port Connecting to the Auxiliary PortConnecting a Modem to the Router OL-5876-03 Powering Up Cisco 1800 Series Routers Routers ModularChecklist for Power Up Power-Up ProcedureYourname con0 is now available Press Return to get started Verifying the LED Indicators on the 1841 Router Color StatusInitial Configuration of the Router Verifying the Hardware ConfigurationInitial Configuration Completing the Configuration Verifying the Initial ConfigurationCisco Router and Security Device Manager Powering up the Cisco 1861 Integrated Services Router Description BenefitsDescription Benefits Troubleshooting Cisco 1800 Series Routers Modular Problem SolvingFault Indications Troubleshooting the Power and Cooling SystemsNormal Indications Troubleshooting Cables, Connections, and Interface Cards Environmental Reporting FeaturesReading LEDs System Messages FDXMore Troubleshooting Help Recovering a Lost PasswordExplanantion Installing WICs, VWICs, and HWICs Cisco Interface Cards Installation GuideRelated Product Documentation Card guides Interface card Page OL-5876-03 Replacing CompactFlash Memory Cards 10-1Using the Compact Flash Guard Installing a CompactFlash Memory CardRemoving a CompactFlash Memory Card 10-210-3 10-4 11-1 Opening the Chassis Modules Internal to the Cisco 1841 Router11-2 11-3 Removing the Chassis ScrewLocating Modules 11-4Installing a Sodimm 11-5Installing an AIM 11-6Accessory Kit to Use Installation ProcedureCisco Part Number Type 11-711-8 Location of Metal Standoff Attachment Locations11-9 Plastic Standoff OrientationConnecting the AIM to the System Board 11-10Applying the AIM Label Closing the Chassis11-11 11-12 11 Closing the ChassisACT LED IN-1IN-2

CISCO1841-HSEC/K9-RF specifications

The Cisco Systems CISCO1841-HSEC/K9-RF is a versatile and robust router designed to meet the demands of small to medium-sized businesses and branch offices. This model is part of the Cisco 1800 Series Integrated Services Routers, which are known for their performance, security features, and scalability, making them ideal for organizations seeking to enhance their network infrastructure.

One of the main features of the CISCO1841-HSEC/K9 is its modular architecture. This design allows businesses to customize and expand their networks according to changing needs by adding various modules and interfaces. The router supports multiple WAN interfaces, which include serial, Ethernet, and DSL, providing flexible connectivity options to accommodate various networking scenarios.

The CISCO1841-HSEC/K9 also boasts an integrated security architecture. This router is equipped with advanced security features, including firewall capabilities, VPN support, and intrusion prevention systems. These technologies ensure that data is protected while being transmitted across the network. The built-in security features help organizations safeguard sensitive information against potential threats and cyberattacks.

In terms of performance, the CISCO1841-HSEC/K9 is powered by a high-speed processor and dynamic routing capabilities, which allow it to efficiently handle high volumes of traffic without compromising performance. The router supports various routing protocols, including EIGRP, OSPF, and BGP, facilitating seamless data flow and efficient route management.

Another noteworthy characteristic of the CISCO1841-HSEC/K9 is its support for voice and video services. This capability enables businesses to deploy unified communications applications, such as VoIP and video conferencing, enhancing collaboration among team members and improving overall productivity.

Moreover, the router is designed for easy management and monitoring. Cisco’s IOS software provides a user-friendly interface, allowing network administrators to configure, operate, and troubleshoot the network with ease. The router also supports Cisco’s Smart Install feature for simplified deployment and management.

In summary, the Cisco Systems CISCO1841-HSEC/K9-RF is a powerful and adaptable router that combines security, flexibility, and performance. Its modular design, robust security features, support for various routing protocols, and capabilities for multimedia applications make it a compelling choice for businesses looking to enhance their network infrastructure while addressing current and future demands.
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