In einer eMail vom 23.12.2008 00:16:53 Westeuropäische Normalzeit schreibt [email protected]:
On Mon, Dec 22, 2008 at 5:55 PM, <[email protected]> wrote: > I think there are enough folks around who are both experts in BGP and OSPF. > (1): > My question is, what sort of policy/QoS/etc. routing can only be enabled by > a distance vector protocol and can in principle not be enabled by a > link-state protocol ? (note, but I don't need an instruction that link-state > is intra-domain, DV is inter-domain) Address and direction sensitive link state. That is, for some combinations of source, destination and direction of transit the link is up, but for other combinations of combinations of source, destination and direction of transit the link is down. Distance-vector protocols can provide this for a limited but very useful subset of the possible combinations. And so can link.state protocols, right ? ! They just do it in a different way. Also, you may color the nodes and links such that you can even get Multiple Topologies (see OSPF-MT). If you want real substantial progress in routing technology then you need to improve Dijkstra (what I did) and not extend DV. Heiner
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