03-01-2021 09:00 PM
What is the difference between "area1" and "area 0.0.0.1"??
I'm not sure how to understand the IP address format of Area.
The device is Nexus.
Solved! Go to Solution.
03-01-2021 09:13 PM
there should not be any difference between 2 ways of doing same thing.
"area 0.0.0.1" means "area 1"
Regards, ML
**Please Rate All Helpful Responses **
03-02-2021 12:39 AM
Hello @JustTakeTheFirstStep ,
the OSPF standard allows to write the OSPF area-id in dotted decimal format like an IP address.
And like an IP address in dotted decimal format you can have formulas for conversion.
So for example
area 1.0.0.0 is not area 1 but it is a huge number 1 * 2^24 = 16,777,216.
Area ids in dotted decimal format are used by other vendors and provide a way to document the address block that is within a non zero area.
For example if address block 172.17.0.0/16 is within an area instead of naming the area 3 we could name it
area 172.17.0.0 making the area id meaning the address block inside it.
Hope to help
Giuseppe
03-02-2021 01:29 AM
adding to @Giuseppe Larosa , there is a good tool I come across how you can calculate the area with dotted decimal to decimal
03-02-2021 02:03 AM
03-01-2021 09:13 PM
there should not be any difference between 2 ways of doing same thing.
"area 0.0.0.1" means "area 1"
Regards, ML
**Please Rate All Helpful Responses **
03-01-2021 09:28 PM
If so, for example, what is area, 1.0.0.0, 1.1.0.0, 1.1.1.1?
03-02-2021 12:39 AM
Hello @JustTakeTheFirstStep ,
the OSPF standard allows to write the OSPF area-id in dotted decimal format like an IP address.
And like an IP address in dotted decimal format you can have formulas for conversion.
So for example
area 1.0.0.0 is not area 1 but it is a huge number 1 * 2^24 = 16,777,216.
Area ids in dotted decimal format are used by other vendors and provide a way to document the address block that is within a non zero area.
For example if address block 172.17.0.0/16 is within an area instead of naming the area 3 we could name it
area 172.17.0.0 making the area id meaning the address block inside it.
Hope to help
Giuseppe
03-02-2021 02:03 AM
im tested
solved
03-02-2021 01:29 AM
adding to @Giuseppe Larosa , there is a good tool I come across how you can calculate the area with dotted decimal to decimal
11-12-2023 06:38 AM
Super!
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