Hi Jin,
16.3 can update only backbone paths. Virtual link can be laid down
only via non-backbone areas. So I don't see any scenario when updating
path via transit area can change cost of virtual link.
Anton
Jin Wang wrote:
rfc2328 states that when the cost of a virtual link changes, a new
router-LSA should be originated for the backbone area.
The calculating result of 16.3(choosing another forwarding path
different to virtual link path) will lead to new router-LSA generation
in backbone area? This new chosen path can be regarded as virtual-link
cost change?If no,I feel only some ABR(related to this transit area) or
some other non-backbone areas attached to these ABRs can get the optimal
path(via new-generated summary LSA).But for some internal routers in
backbone area may not be able to forward traffic by best path because
they get none of new router-lsa notification.
Pls correct me and thanks in advance.
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