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ospf link failure

(category : Strange Question)
Hi,

In the lecture for link state routing, why can't we pass to X5 a packet to A1? We could imagine X5 forwarding it to X3 and X3 forwarding it to A1. I know it is not optimal, but it seems to work.

Thanks,

Good luck for tomorrow.

Ghita Mezzour
Posted by Ghita Mezzour on Sunday 4 March 2007 at 15:32
Comments
In the lecture for link state routing, why can't we pass to X5 a packet to A1? We could imagine X5 forwarding it to X3 and X3 forwarding it to A1. I know it is not optimal, but it seems to work.

A: because of the assumption "link x3-x5 is not in area1" (there is a typo x3-x6 it should be x3-x5). In practice we often do not want to allow backbone (area 0) links to be used for routing packets within non-backbone areas, and configure these links to be visible only within backbone area.
Posted by Slavisa Sarafijanovic on Monday 5 March 2007 at 11:49