On May 17, 2018 12:56:22 PM GMT+02:00, Mattia Milani <[email protected]> wrote: >Hello all, i'm writing hear because i have a problem with some >simulation >that i'm making, the simulation is on my laptop with VM. >I'm focusing on the hold timer expiration, i want to make this timer >expire >and see the differences. > >This is my topology: > >H1---H2----H3----H4----H5 > >H1 and H5 are the only one that share some route, i'll call them R1 and >R2. > >So when the network it will be stabilized, in all RT (H1,H2,H3,H4,H5) I >will have 2 voice, one to reach R1 and one to reach R2. > >In every host i setted an hold timer = 3 for every session, with this >command: > >hold time 3; > >Now i want to "kill" the node H3 and see this result: after 3 seconds >see >in the RT of H2 and H4 a variation, like one cannot more reach R1 and >the >other one cannot reach R2. > >How can i do it? i need to disable something? > >because i tried this: > >1)using the command: birdc -s socket_H3 down and shutting down the VM >i see that the process that is shutted down, but the other simulation >changed immediatly the RT > >so i tried: >2)use only the command birdc -s socket_H3 down and get active the VM >i was thing that there was a checking on the interface if it is active >or >not. >But it didn't work, the RT of others changed istantly. > >3) so i was thinking that before closing itself bird send a signal to >other >bird connected (i didn't search in the code) so i use the command "sudo >kill -9 *pid*" on the pid of the bird relative to H3, but with a big >surprised i see that not only the process associated with H3 is killed >but >it will be closed the process of H2 H3 and H4 > >i'll try to explain it better: > >Process list: >100 Bird_H1 >101 Bird_H2 >102 Bird_H3 >103 Bird_H4 >104 Bird_H5 > >i use "sudo kill -9 102" > >process list resulting: >100 Bird_H1 >104 Bird_H5 > >The survives is only the process that was sharing some route. > >do you have any suggestion to see the expiration of hold timer in act? > >Thanks a lot, >Mattia
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