Cisco 2800 Series - Page 125

Cisco 2800 Series

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Easy VPN Configuration Example

Configure

5

OL-6340-01

•

Private IP address pool: 192.168.3.0/24

Table of Contents

Preface1
Command Conventions2
Obtaining Documentation2
Ordering Documentation3
Documentation Feedback3
Obtaining Technical Assistance3
Cisco Technical Support Website4
Submitting a Service Request4
Definitions of Service Request Severity4
Obtaining Additional Publications and Information5
Overview7
San Jose, CA7
Cisco 2800 Series Software Configuration Documentation8
Contents8
Performing Initial Configuration9
Initial Configuration Using the Cisco Router and Security Device Manager9
For more Information about SDM and about Your Router9
Obtaining the Latest Version of SDM9
Initial Configuration Using the Setup Command Facility10
Viewing the Configuration11
Initial Configuration Using the Command-Line Interface13
Using the Cisco IOS Startup Sequence14
Verifying the Initial Configuration14
Configuring the Router to Support Web-Based Applications, a User with Priv 15, and Telnet/Ssh15
Enabling SDM on a Router Configured to Use the IOS Startup Sequence15
Starting SDM on a Manually Configured Router16
Table of Contents17
Basic Software Configuration Using the Setup Command Facility17
Platforms Supported by this Document17
Information about the Setup Command Facility18
Using the Setup Command Facility to Perform Basic Configuration18
Examples of Using the Setup Command Facility to Configure Interface Parameters21
- Gigabit Ethernet Interface Configuration22
- Selecting the Port for the Gigabit Ethernet Interface22
- Speed/Duplex Settings for the Gigabit Ethernet Ports23
- Flow Control Capabilities23
- 1- or 2-Port Serial Interface Configuration24
- Frame Relay Encapsulation25
- Link Access Procedure, Balanced Encapsulation26
- X.25 Encapsulation26
- ATM Data Exchange Interface Encapsulation26
- Switched Multimegabit Data Service Encapsulation26
- Asynchronous/Synchronous Serial Interface—Asynchronous Configuration27
- Asynchronous/Synchronous Serial Interface—Synchronous Configuration27
- LAPB Encapsulation28
- ISDN Basic Rate Interface Configuration29
- ATM-DXI Encapsulation29
- SMDS Encapsulation29
- Point-To-Point Protocol Encapsulation31
- ISDN BRI Line Configuration33
- ISDN BRI Provisioning by Switch Type33
- Defining ISDN Service Profile Identifiers34
- Channelized E1/T1 ISDN PRI Interface Configuration35
- E1/T1 PRI Mode35
- E1 Channelized Mode35
- PPP Encapsulation36
- T1 Channelized Mode38
- Dedicated Mode40
- 1-Port, 4-Wire, 56-Kbps DSU/CSU Configuration40
- Switched Mode40
Completing the Configuration41
Basic Software Configuration Using the Cisco IOS Command-Line Interface43
Use this Document with the Following Platforms43
Cisco 1800 Series Routers43
Cisco 2800 Series Routers43
Cisco 3800 Series Routers43
- How to Perform a Basic Software Configuration Using the Cisco IOS CLI44
- Prerequisites for Basic Software Configuration Using the Cisco IOS CLI44
- Restrictions for Basic Software Configuration Using the Cisco IOS CLI44
- Configuring the Router Hostname45
- How to Perform a Basic Software Configuration Using the Cisco IOS CLI45
  - Configuring the Enable and Enable Secret Passwords46
  - Configuring the Console Idle Privileged EXEC Timeout47
  - Configuring Fast Ethernet and Gigabit Ethernet Interfaces49
  - Specifying a Default Route or Gateway of Last Resort51
  - Configuring Virtual Terminal Lines for Remote Console Access54
  - Configuring the Auxiliary Line56
  - Verifying Network Connectivity57
  - Saving Backup Copies of Your Configuration and System Image59
  - Saving Your Router Configuration59
- Additional References61
- Related Documents—Basic Software Configuration61
- Where to Go Next61
  - Related Documents—Additional Configuration62
  - Technical Assistance62
  - Secured Branch Router Configuration Example65
- Before You Begin66
  - Conventions66
  - Related Products66
- Configure67
  - Network Diagram67
  - Commands for Verifying Firewall Websense URL Filtering70
- Verify70
  - Commands for Verifying Cisco IOS Firewall Authentication Proxy71
  - Commands for Verifying Context-Based Access Control71
  - Commands for Verifying Cisco IOS Intrusion Prevention System72
- Troubleshoot74
- Troubleshooting Commands74
- Related Information75
- IP Communication Solution for Group Applications Configuration Example77
- Prerequisites78
- Configure80
- Cisco 3845 Router81
- Verify95
  - Verification Screens: Examples111
  - Cisco Callmanager Screen Examples112
  - Cisco CME Screen Examples114
  - Cisco Unity Express Screen Examples116
  - Troubleshooting Reference Documents and Commands118
- Related Information119
- Easy VPN Configuration Example121
- Before You Begin122
- Components Used123
- Configure123
  - Headquarters Office Configuration (Cisco 3845 Router)126
  - Branch 1 Router Configuration (Cisco 1841 Router)129
  - Branch 2 Router Configuration (Cisco 2811 Router)131
- Verify133
- Troubleshoot135
- Related Information137
- Hoot and Holler over VPN Configuration Example141
- Prerequisites142
- Configure143
  - Branch 1 Router Configuration (Cisco 2801 Router)149
  - Verify Headquarters Connectivity157
  - Verify Remote Location Connectivity167
  - Verifying Branch 1 Router167
  - Verifying Branch 2 Router174
- Troubleshoot180
- Related Information183
- Finding Feature Documentation185
- Using Cisco.com Feature Resources185
- Voice Configuration Resources185
- Security Configuration Resources186
- Dial Configuration Resources186
- Finding Documentation for a Specific Feature by Using Cisco Feature Navigator186
- Finding Documentation for All Supported Features on Your Router by Using Cisco Feature Navigator187
- Finding Feature Documentation by Browsing Feature Modules by Cisco IOS Release188
- Finding Feature Documentation by Browsing Cisco IOS Release Notes188
- Changing the Configuration Register Settings191
- Displaying the Configuration Register Settings195
- Configuring the Console Line Speed (Cisco IOS CLI)195
- Using the ROM Monitor197
- Information about the ROM Monitor198
- ROM Monitor Mode Command Prompt198
- Why Is My Router in ROM Monitor Mode?198
- When Would I Use the ROM Monitor?198
- How to Use the ROM Monitor—Typical Tasks199
- Tips for Using ROM Monitor Commands199
- Entering ROM Monitor Mode201
- Using the Break Key Sequence to Interrupt the System Reload and Enter ROM Monitor Mode201
- Setting the Configuration Register to Boot to ROM Monitor Mode202
- Displaying Commands and Command Syntax in ROM Monitor Mode (?, Help, -?)204
- Displaying Files in a File System (Dir)206
- Loading a System Image (Boot)206
- Downloading Files over the Router Console Port (Xmodem)211
- Modifying the Configuration Register (Confreg)212
- Obtaining Information on USB Flash Devices214
- Modifying the I/O Memory (Iomemset)215
- Recovering the System Image (Tftpdnld)216
- Troubleshooting Crashes and Hangs (Stack, Context, Frame, Sysret, Meminfo)220
- Router Crashes220
- Router Hangs220
- ROM Monitor Console Communication Failure221
- Sample Output for the Stack ROM Monitor Command223
- Sample Output for the Context ROM Monitor Command223
- Sample Output for the Frame ROM Monitor Command224
- Sample Output for the Sysret ROM Monitor Command224
- Sample Output for the Meminfo ROM Monitor Command224
- Exiting ROM Monitor Mode225
- Using Compactflash Memory Cards229
- Online Insertion and Removal230
- How to Format Compactflash Memory Cards231
- Determining the File System on a Compactflash Memory Card231
- Formatting Compactflash Memory as a Class B Flash File System232
- Formatting Compactflash Memory as a Class C File System232
- File Operations on Compactflash Memory Cards233
- Copying Files233
- Displaying Files233
- Displaying File Content234
- Displaying Geometry and Format Information (Class C Only)234
- Privileged Exec Mode234
- Deleting Files235
- Renaming Files236
- Directory Operations on a Compactflash Memory Card236
- Entering a Directory and Determining Which Directory You Are in236
- Creating a New Directory237
- Removing a Directory238
- Upgrading the System Image239
- Information about Upgrading the System Image240
- Why Would I Upgrade the System Image?240
- Which Cisco IOS Release Is Running on My Router Now?240
- How Do I Choose the New Cisco IOS Release and Feature Set?240
- How to Upgrade the System Image241
- Saving Backup Copies of Your Old System Image and Configuration241
- Ensuring Adequate DRAM for the New System Image242
- Ensuring Adequate Flash Memory for the New System Image244
- Copying the System Image into Flash Memory248
- Using TFTP or Remote Copy Protocol to Copy the System Image into Flash Memory248
- Using the ROM Monitor to Copy the System Image over a Network250
- Loading the New System Image255
- Loading the New System Image from the Cisco IOS Software255
- Saving Backup Copies of Your New System Image and Configuration260
- Troubleshooting Links265

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