How many router types are there in OSPF protocol?

Created Feb 13, 2016 23:26:07Latest reply Feb 14, 2016 08:17:57 855 1 0 0

How many router types are there in OSPF protocol?

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TomJ     Created Feb 14, 2016 08:17:57 Helpful(0) Helpful(0)

OSPF routers can be divided into four categories according to the different locations in the AS.
Routers within the region: all the interfaces of this kind of router belong to one OSPF area.
Area Border Router: This kind of router can simultaneously belong to two or more areas, but one must be the backbone area. ABR is used to connect the backbone area and non-backbone area. The connection can be either a physical connection or a logical connection.
Backbone router: This kind of router has at least one interface belongs to backbone area. Therefore, all the ABR routers and routers located in area0 are backbone routers.
Autonomous system boundary router: Router exchanging routing information with other AS is called ASBR. ASBR does not necessarily located at the boundary of the AS, it may be a IR or ABR
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