Correcting the Problem at the Transport and Application Layers презентация

Commands Used to Correct Transport Layer Problems

Example: Correcting an Extended Access List Problem at the Transport Layer

Correcting an Extended Access List Problem at the Transport Layer

Verifying the Correction to the Misconfigured Access List

Example: Correcting a Problem at the Transport Layer

Configuring IP Cache Flow Switching on SanFran and Oakland

Viewing the Cisco IOS Version on SanFran

Reviewing Cisco IOS Release Status on the Cisco Feature Navigator

Finding Features by Cisco IOS Image Name on the Cisco Feature Navigator

Reviewing Cisco IOS Release Status on the Cisco Feature Navigator

Looking for Software Advisories for a Specific Image

Reviewing the Software Advisories for a Specific Image

Reviewing IP Cache Flow on SanFran

Reviewing IP Cache Flow on Oakland

Reviewing IP Cache Flow on Oakland (Cont.)

Reviewing IP Cache Flow on Oakland (Cont.)

Commands Used to Correct Network Management Problems

Commands Used to Correct Network Management Problems (Cont.)

Commands Used to Correct Network Management Problems (Cont.)

Commands Used to Correct DHCP Problems

Example: Correcting a TFTP Problem at the Application Layer

Correcting a TFTP Problem at the Application Layer

Invoking the TFTP Server

Booting Up the Router to Restore the Cisco IOS Image

Example: Correcting a Problem at the Application Layer

Reviewing Debug Output on Kingston

Reviewing Debug Output on Toronto

Reviewing the Crypto Map on Kingston

Reviewing the Crypto Map on Toronto

Correcting the Crypto Map Access List on Toronto

Testing Connectivity from the Kingston Switch

Support Resources for Correcting Transport and Application Layer Problems Cisco Systems Cisco Systems TAC www.cisco.com/tac Internetwork Troubleshooting Handbook www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1 Cisco Systems technologies reference www.cisco.com/univercd/home/home.htm

Calling Cisco TAC

Procedure for Correcting Transport and Application Layer Problems

Summary Troubleshooters can use the appropriate commands to make configuration changes to correct problems with TCP and UDP at the transport layer. Troubleshooters can use the appropriate commands to make configuration changes to correct problems with network management protocols at the application layer. Some transport and application layer support resources are as follows: Cisco Systems TAC Internetwork Troubleshooting Handbook Cisco Systems technologies reference Following a systematic procedure increases the chances that you will successfully and effectively correct an isolated problem at the transport or application layer.

Completed Troubleshooting Logs

Troubleshooting Log—Trouble Ticket G Core Router/Switch

Troubleshooting Log—Trouble Ticket G Distribution Router

Troubleshooting Log—Trouble Ticket G Access Router

Troubleshooting Log—Trouble Ticket G Access Router (Cont.)

Troubleshooting Log—Trouble Ticket G Access Switch

Troubleshooting Log—Trouble Ticket H Core Router/Switch

Troubleshooting Log—Trouble Ticket H Core Router/Switch (Cont.)

Troubleshooting Log—Trouble Ticket H Distribution Router

Troubleshooting Log—Trouble Ticket H Access Router

Troubleshooting Log—Trouble Ticket H Access Router (Cont.)

Troubleshooting Log—Trouble Ticket H Access Switch