hannah at tinfoilhat
Apr 12, 2012, 4:52 AM
Post #2 of 2
On 12/04/2012, at 21:05, Naser Al Hattab <hattab [at] ies> wrote:
> Dear all,
> Checked OSPF Database, and found something interesting. The external OSPF routes (NSSA type-7) is advertised by the DNS servers with forwarding address of the physical interface instead of router ID. Now, Since the interface is down, the next hop IP ( which is the forwarding address) is not valid and hence all traffic destined to this VIP will be black hole
The router ID is only used for identification purposes, and doesn't have to even be an address on the system.
Surely though if the interface is down, it wouldn't be able to announce link states to neighbours on that interface?