OSPF Router Types

OSPF Router Types
There are four types of OSPF routers which are determined by a router's function and/or location within an OSPF area:
Internal (IR) -- all OSPF interfaces must belong to the same OSPF area.
Backbone -- at least one OSPF interface must belong to area 0 (backbone area)
Area Border Router (ABR) -- at least one OSPF interface must belong to area 0 (backbone area) and at least one OSPF interface must belong to a non-backbone (area 0) area.
Autonomous System Boundry Router (ASBR) -- an OSPF router that performs route injection (redistribution) from another route source (RIP, EIGRP, IS-IS, BGP, another OSPF process, etc.).
You can use the show ip ospf EXEC command to identify which OSPF type(s) your device is currently configured to be.

[@tusharnaik4710]

ASBR point is clear..very good explanation

[@twanaosman1]

it just flawless explanation, you save a lot of time of OSPF beginner
thanks

[@Spydymanx]

Nice vids man. Seriously good. Supplements the documentation brilliantly.

[@rvd07]

Thanks for the video. Easy to learn OSPF by your explanation.

[@dinmind]

great explanation and definition..i'm gonna take ROUTE exam next week..this video is very helpful. thanks man!

[@bahi59]

Clear and concise. Thank you sir.

[@jjcetece05to09]

It's amazing...
This video cleared most of my questions in ospf, Really you did a good job

[@aRcHiTecH0]

Great Tutorial - Cleared Many Points On OSPF Types
Can U Create Video On OSPF LSA's ... It Will Be Very Helpful ....
Great Video Great Job

[@infosaurabh30]

very nice explanation !! thanks for sharing the education

[@GoodGameOKC1]

Great vid, thanks for sharing your knowledge.

[@westelp]

excellent vid man thanks going for my CCNP Route now

[@intruuuging]

you ..... are amazing good sir... i know this is late... really late but still ...awesome.

[@kansukre]

that's a great lesson thanks

[@Geekbuyfr]

Very informative Merci beaucoup !

[@capsitan]

this helped alot!

[@kkiran252it]

why all areas connected to backbone area( area 0)?

[@palashmitra000]

nice job
I become fan of you.

[@remasal-falahmojosantren6944]

good