At 10:14 PM 2/21/2001 +1100, Blazer wrote:
>Hello all,
>
>I am wondering if some could help clear up a query in regards to router=20
>& network lsa's (Type 1&2).
>
>Does the DR flood the router lsa type out to other segments in an area?
>
>Thanks in advance..
Let me try to clarify some OSPF terminology that may be confusing things here.
I'll have a general link state paper on certificationzone.com in March.
It would have been far better to have called the "DR" something of the lines
of "Designated Interface," because the scope of a DR/BDR is only a single
subnet. The DR acknowledges updates and sends the appropriate LSAs
to AllSPFRouters on single subnets. A physical router can have multiple
interfaces, each of which has an independent status as DR, BDR, or DROther.
Flooding has nothing to do with DR status. It's complementary, in the sense
that flooded LSA information goes out of interfaces on the router OTHER
than the interface to the subnet on which the LSA was originated.
A physical router (or to be even pickier, an OSPF process) MUST flood
the LSA1 and LSA2 information that affects its LSDB to all other directly
connected
routers in the same area.
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