Hi Rene,
This lab is fun
. However, i have two questions, what feature make loopback interfaces appear /32 in the routing table and does this have any benefits?
regards,
michael
AsianFish inc. is expanding their business towards Europe so they need to expand their network as well. You are responsible for the performance of the network and decided that OSPF would be a suitable candidate for a routing protocol. Because the network at this moment is still small, you decided a single area OSPF should be enough. It's up to you to make it work!
c3640-jk9s-mz.124-16.bin

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Hi Rene,
This lab is fun
. However, i have two questions, what feature make loopback interfaces appear /32 in the routing table and does this have any benefits?
regards,
michael
Hi Michael,
If you are working on this lab I'm guessing you are studying for CCNA?
OSPF uses multiple "network types". You will learn about those in CCNP. One of them is "loopback" and OSPF will always advertise a loopback as /32. Type the show ip ospf interface loopback0 command and it will show you the OSPF network type.
In a way it makes sense because there is nothing more than a single IP address on a loopback interface. Even though you configure a /24 you won't find 200+ IP addresses there.
It will save you some address space (we don't care about that all that much with private IP address space) but it could be useful when you play with most specific routing.
Good luck!
Rene
I want to thank you to give us small review in OSPF. I have forgot the LOOPBACK and Authentication and how to control them.![]()
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Thanks Omar!
Hi Rene . Earlier there was an option to download the PDF. Its no longer available. Have you removed all the PDFs?
thanks