Specifications
Table Of Contents
- Contents
- Preface
- Getting Started
- Basic Router Configuration
- Interface Port Labels
- Viewing the Default Configuration
- Information Needed for Configuration
- Configuring Basic Parameters
- Configuring Static Routes
- Configuring Dynamic Routes
- Configuring Enhanced IGRP
- Basic Router Configuration
- Configuring Your Router for Ethernet and DSL Access
- Sample Network Deployments
- Configuring PPP over Ethernet with NAT
- Configuring PPP over ATM with NAT
- Configuring a LAN with DHCP and VLANs
- Configuring a VPN Using Easy VPN and an IPSec Tunnel
- Configure the IKE Policy
- Configure Group Policy Information
- Apply Mode Configuration to the Crypto Map
- Enable Policy Lookup
- Configure IPSec Transforms and Protocols
- Configure the IPSec Crypto Method and Parameters
- Apply the Crypto Map to the Physical Interface
- Create an Easy VPN Remote Configuration
- Verifying Your Easy VPN Configuration
- Configuration Example
- Configuring VPNs Using an IPSec Tunnel and Generic Routing Encapsulation
- Configuring a Simple Firewall
- Configuring a Wireless LAN Connection
- Sample Configuration
- Configuring Additional Features and Troubleshooting
- Additional Configuration Options
- Configuring Security Features
- Configuring Dial Backup and Remote Management
- Troubleshooting
- Reference Information
- Cisco IOS Software Basic Skills
- Concepts
- ROM Monitor
- Common Port Assignments
14-5
Cisco 1800 Series Integrated Services Routers (Fixed) Software Configuration Guide
OL-6426-02
Chapter 14 Troubleshooting
ATM Troubleshooting Commands
show atm interface Command
To display ATM-specific information about an ATM interface, use the show atm interface atm 0
command from privileged EXEC mode, as shown in
Example 14-3.
Example 14-3 Viewing Information About an ATM Interface
Router# show atm interface atm 0
Interface ATM0:
AAL enabled: AAL5 AAL2, Maximum VCs: 23, Current VCCs: 0
VCIs per VPI: 1024,
Max. Datagram Size: 4528
PLIM Type: ADSL - 4608Kbps Upstream, DMT, TX clocking: LINE
0 input, 0 output, 0 IN fast, 0 OUT fast
Avail bw = 4608
Config. is ACTIVE
ATM 0. n is up, line protocol is up The specified ATM subinterface is up and operating
correctly.
ATM 0. n is administratively down, line protocol
is down
The specified ATM subinterface has been disabled
with the shutdown command.
ATM 0. n is down, line protocol is down The specified ATM subinterface is down, possibly
because the ATM line has been disconnected (by the
service provider).
For Fast Ethernet Interfaces
Fast Ethernet n is up, line protocol is up The specified Fast Ethernet interface is connected to
the network and operating correctly.
Fast Ethernet n is up, line protocol is down The specified Fast Ethernet interface has been
correctly configured and enabled, but the Ethernet
cable might be disconnected from the LAN.
Fast Ethernet n is administratively down, line
protocol is down
The specified Fast Ethernet interface has been
disabled with the shutdown command, and the
interface is disconnected.
For Dialer Interfaces
Dialer n is up, line protocol is up The specified dialer interface is up and operating
correctly.
Dialer n is down, line protocol is down • This is a standard message and may not indicate
anything is actually wrong with the
configuration
or
• If you are having problems with the specified
dialer interface, this can mean it is not
operating, possibly because the interface has
been brought down with the shutdown
command, or the ADSL cable is disconnected.
Table 14-1 show interface Command Output Description (continued)
Output Cause