Hi everybody,
I am reading this great link on bridging layer2 over GRE tunnel on Juniper MX:
https://kb.juniper.net/InfoCenter/index?page=content&id=KB31139
I am wondering if there is any loop prevention such as Split horizon when bridging layer2 over GRE.
For example:
We have three PE1,PE2,PE3 ; we have configured GRE tunnels among them so they are fully meshed over GRE tunnel, these tunnels will be used to carry layer2 traffic from connected CE.
Next we configured Bridge-domain on al three PE and placed GRE tunnels in it.
Now let say PE1 receives a frame from attached CE, destination MAC is FFFF.FFFF.FFFF , PE1 will forwards these frame over GRE tunnels to PE2 and PE3, now what will PE2 or PE3 do?
Will they turn around and send it over to PE1 and thus creating a loop or we have split horizon just like we have for VPLS where Frame received on PW will not be transmitted to another PE over another PW?
Thanks and have a nice day!!