Need help with understanding default route

[mirror512]

hi ,

I am trying  lot but i am not fully able to understood default route.

From my under standing , this means that for all routes which router don't know , send it to this addrress.

What is the difference between these commands

• ip default-network 20.20.20.1
• default-information originate
• ip route 0.0.0.0 0.0.0.0 nullo        ---- in this why he didn't choose which network to send default route

[Reza Sharifi]

Hi,

Have a look at this doc.  It explains the deference between default network, default gateway and default route.

HTH

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094374.shtml

[Latchum Naidu · Accepted solution]

Hi,

ip default-network must be used on EIGRP
default-information originate - used with OSPF, RIP

Please see the below ones for complete information.

This article is about IP Default-network...
http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094374.shtml#ipnetwork

This article is on default-information originate...
http://www.cisco.com/en/US/docs/ios/12_3t/ip_route/command/reference/ip2_c1gt.html#wp1094465

Please rate the helpful posts.
Regards,
Naidu.

[cadet alain]

Hi,

ip default-network  was used for RIP and IGRP and was transposed to EIGRP but  the prefered way is simply to redistribute static.

Regards.

Alain.