OSPF Design

[Nirmalbang]

Hi All,

I am planning to create new network. Following are the sites

1) Primary site

2) DR Site

3) Client site A

4) Client site B

5) Client site C.

I am planning to configure this network on OSPF and the sites will have area as given below

Area 0 For primary site - All other sites are physically connected to this site via P2P Link

Area 1 at Client site A - All other sites are physically connected to this site via P2P Lin

Area 2 at Client site B - All other sites are physically connected to this site via P2P Lin

Area 3 at Client site C.- All other sites are physically connected to this site via P2P Lin

Area ? at DR site - All other sites are physically connected to this site via P2P Lin

My question is shall i keep the DR site also in area 0 as when DC site is completely down in that case intera area routes will not get populated due to non availability of area 0. Hope i am making sense in my question.

[rahulpandit515]

Hello Nirmal,

                     If you can share network diagram it would be much more clear .  As in OSPF Area 0 is a backbone area so it's important that disaster recovery (DR site) should be in Area 0.

Hope it helps

Regards

[Nirmalbang]

Hi Rahul,

I have attached the diagram.

[rahulpandit515]

Hi Nirmal,

               It should be Area 0. If your Primary  site goes down your client will not get isolated only because of DR site will provide all routes only , if it is in Area 0 .

Hope it helps,

Regards