i think that link-state protocol, such as ospf/isis ,will calculate their
route independently. within a area, only LSAs area flooded, only in ABR,
which will export summary addr(identified as N) to other areas;so I think,if
there is prefix N learned from other IGP,whick has lower preference than
ospf,then the N ,learned from the IGP,will be installed in forwarding-table
,in other words,the N learned from ospf is not active route; but i think,the
ospf still export the N,learned from ospf, into other area, of course the N
will be presented as summary LSA(type 3 LSA)
Message Posted at:
http://www.groupstudy.com/form/read.php?f=9&i=595&t=472
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