> On Aug 2, 2016, at 1:56 AM, 박정숙 <[email protected]> wrote: > > > Hi, all. > > I've been testing OSPF functions. > All of them are working normally except one thing. > I shutdown all interfaces of one node with "ifdown intf" command after zebra > and ospfd startups. > (I tested this experiment on 4*4 2d Torus network.) > Of course, I found that a new detour path was created.
OSPF doesn’t create paths. It just recalculates the shortest path to each destination. Unless you are using some other protocol like LDP over the OSPF network? > And I executed "ifup intf" command to check if the original path(it's the > shortest path) would be recovered. > But the original path was recovered even though I started zebra and ospfd > daemon after killing them. I assume you mean “was NOT recovered” here. > Only one case, system rebooting, was successful. > One expert recommended that I try to modify the code > because the OSPF v2 standard doesn't include path recovery about my case. OSPF will utilize the shortest path through the network. In a normal case, if a lower cost link appears, it will be used. But I guess your 4 x 4 2D torus could have lots of equal cost paths? Such a network is not a typical OSPF deployment. > But the quagga code was very complicated and I cannot solve the problem in a > short time. > This is the reason why I' asking your help. > Tom
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