[c-nsp] OSPF clarification

[Mark Tinka]

On Monday 30 November 2009 11:09:31 pm Alex wrote:

> If your VLANs are all covered by "network X.Y.Z.W area V"
>  command under "router ospf T" then they all are
>  represented as Type-1/Type-2 LSA in OSPF LSDB.
> And every time a VLAN goes down, LSA-1/2 are reflooded
>  with Age=MaxAge (default 3600 sec).
> When this VLAn goes back up, LSA-1/2 are recreated and
>  reflooded again. Every time this happens, all OSPF
>  routers in given area must recalculate their SPF, then
>  put OSPF routes in a routing table with new timestamp.

That's OSPFv2 for you.

Mark.
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