Solved

Nexus OS - OSPF Command

Posted on 2016-11-04
3
32 Views
Last Modified: 2016-11-06
I have Nexus 7K & it is running OSPF. One of the areas is the NSSA area & I have the below command for the OSPF NSSA area
What does this command represent in Nexus

  area 0.0.1.23 nssa no-summary default-information-originate
0
Comment
Question by:SrikantRajeev
  • 2
3 Comments
 
LVL 26

Accepted Solution

by:
Predrag Jovic earned 500 total points
ID: 41874157
area 0.0.1.23 nssa no-summary     <---- is configuring totaly nssa and it will advertise default route into area (if default route it is present in ABR's routing table)
default-information originate         <--- should advertise default route into area (if ABR does not have default route in its routing table)

So it looks like redundant
Default Summary Route


By defining an area as a NSSA totally stub area, the NSSA ABR generates a default summary route. As mentioned, if the NSSA area were not defined as totally stub, then a default summary route is not generated by NSSA ABR. This configuration generates a default summary route for a NSSA totally stub area.

    router ospf 1
     Area 1 nssa no-summary
However it will be two type of LSAs. The first default route will be type 3 LSA and the second one will be type 7 LSA. Type 3 is preferred, but type 7 will be created even if ABR does not have default route in it's routing table.

Cisco article - OSPF Not-So-Stubby Area (NSSA)
0
 
LVL 1

Author Comment

by:SrikantRajeev
ID: 41876195
got it thanks
0
 
LVL 1

Author Closing Comment

by:SrikantRajeev
ID: 41876197
Got it
Thanks
0

Featured Post

Highfive + Dolby Voice = No More Audio Complaints!

Poor audio quality is one of the top reasons people don’t use video conferencing. Get the crispest, clearest audio powered by Dolby Voice in every meeting. Highfive and Dolby Voice deliver the best video conferencing and audio experience for every meeting and every room.

Join & Write a Comment

If you're not part of the solution, you're part of the problem.   Tips on how to secure IoT devices, even the dumbest ones, so they can't be used as part of a DDoS botnet.  Use PRTG Network Monitor as one of the building blocks, to detect unusual…
PRTG Network Monitor lets you monitor your bandwidth usage, so you know who is using up your bandwidth, and what they're using it for.
Viewers will learn how to connect to a wireless network using the network security key. They will also learn how to access the IP address and DNS server for connections that must be done manually. After setting up a router, find the network security…
Here's a very brief overview of the methods PRTG Network Monitor (https://www.paessler.com/prtg) offers for monitoring bandwidth, to help you decide which methods you´d like to investigate in more detail.  The methods are covered in more detail in o…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now