OSPF- playing with wild-card mask

Answered Question
Jun 8th, 2008
User Badges:

Hello every1,

I have got different IP addresses (of /29 networks) which are mentioned below. I have to add them in OSPF... one way is to add all the networks one by one ... however to avoid lengthy commands,i would prefer to 'summarise' the networks (by working on its wild-card mask).

What do you suggest? What could be the shortest possible wild-card mask?

Regards


100.100.52.9/29

100.100.52.17/29

100.100.52.25/29

100.100.52.33/29

100.100.52.41/29

100.100.52.49/29

100.100.52.57/29


Correct Answer by jamesl0112 about 8 years 10 months ago

The subnets for the addresses you mention can be summarised into 100.100.52.0/26 (note that this includes 100.100.52.0/29 which you have not said that you are using).


The subnet mask is 255.255.255.192 which gives a wildcard mask of 0.0.0.63.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Correct Answer
jamesl0112 Sun, 06/08/2008 - 02:08
User Badges:
  • Bronze, 100 points or more

The subnets for the addresses you mention can be summarised into 100.100.52.0/26 (note that this includes 100.100.52.0/29 which you have not said that you are using).


The subnet mask is 255.255.255.192 which gives a wildcard mask of 0.0.0.63.

Actions

This Discussion