Tuesday, April 01, 2014


What the heck does THAT mean?  Find out what it means and why you need to know in today's CCNP ROUTE and TSHOOT Training Post for Tuesday, April 1!

I'll give you the question in written form first, and then in Video Practice Exam format.  You can peek at the answer or check out the vid for the answer -- and the video always has an extra tip or two to make it worth your time!

The Question:

You're configuring away on OSPF and you get this message:

 %OSPF-4-NORTRID: OSPF process 1 cannot start.

Which of the following do you need to do to make that process startable?  Choose ALL that apply.

A.  Be sure you have at least one IP address assigned to an interface on that router, whether it be virtual or physical.

B.  An IP address must be configured on at least one physical interface.  A logical interface won't do.

C.  You get that message when you don't have a loopback interface on the router that has an IP address, so you need one of those.  A physical interface won't do.

D.  The interface or interfaces with the IP address(es) must be up.  If they're shut down, that just won't do.

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Now, about that question... 

Here's the entire message you'd see in the situation we described above:

2d04h: %OSPF-4-NORTRID: OSPF process 1 cannot start. There must be at least one
"up" IP interface, for OSPF to use as router ID

So we know "D" is correct.  But what about the physical vs. logical argument?

Well, there really isn't an argument, because you can use either a logical or physical interface in this situation.    Here, after applying an IP address to Serial0 and bringing it up, the OSPF process begins correctly.

R1(config)#int s0
R1(config-if)#ip address
R1(config-if)#no shut
R1(config)#router o
2d08h: %LINK-3-UPDOWN: Interface Serial0, changed state to up
2d08h: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to up
R1(config)#router ospf 1

No message at the end of that output -- and that's a VERY good thing!  : ) 

See you Wednesday with more CCNP ROUTE help!   Right now, do your wallet and mine a favor and pick up my CCNP ROUTE Study Guide!  : ) 

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