www.howtonetwork.org

CCNA & CCNP Certifcation Training

  • About
  • Contact
  • FAQ
  • Join
  • Home
  • CCNA
    • ICND1
    • ICND2
    • 101 CCNA LABS
  • CCNP
    • ROUTE
    • SWITCH
    • TSHOOT
    • 101 CCNP LABS
  • CompTIA
    • Security+
    • Network+
  • Design
    • CCDA
    • CCDP
You are here: Home / ICND1 / Day 14 – DHCP and DNS / Day 14 Tasks / Troubleshooting DNS Issues

Troubleshooting DNS Issues

A default command on the router configuration will be ip domain-lookup. If this command has been disabled, then DNS won’t work. Sometimes router administrators disable it because when you mistype a command you have to wait several seconds while the router performs a lookup. You can turn off DNS lookups with the following command:

Router(config)#no ip domain-lookup

Access control lists often block DNS, so this is another possible cause of problems. You can debug DNS on the router with the debug domain command.

About Us

This is a free bonus site for members of www.howtonetwork.com

Copyright

The content on this copyright Reality Press Ltd.
Copyright Reality Press Ltd.