01-01-2010 08:26 PM - edited 03-06-2019 09:08 AM
Hi
Is it possible to create neighborship/communication between two non backbone area without the help of backbone area. If yes please share the method to do
01-01-2010 09:26 PM
Hello Sandeep,
In order for 2 routers to form an adjacency with each other, they have to be in the same area.
For example:
If you have router-1 and router-2 (below) and there is a link between these 2 routers, in order for them to become neighbors, the 2 interfaces must be in the same area.
router-1-------------area0---------------Router-2
Or
router-1-------------area1---------------Router-2
http://72.163.4.161/en/US/tech/tk365/technologies_configuration_example09186a0080094058.shtml
HTH
Reza
01-01-2010 10:29 PM
Dear Sandeep,
Two diferrent non-backbone areas are necessary to connect with Area 0 for the communication. Neihgbor relationship can be happen within the same area.
Virtual-Link is the solution to communicate non-backbone areas:
For example:
R1 >> Area 0 R2 >> Area 1 R3 >> Area 2 R4
By default Area2 cannot communicate with Area 1 or Area 0.
If we create Virtual-link between R2 and R3. Then Area 2 can communite with Area 1 and Area 0. R3 become an ABR and generates Inter-Area routes to Area 1.
Regards,
Anser
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