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Tunnel GRE hub and spoke

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  • 1.  Tunnel GRE hub and spoke

    Posted Jun 14, 2016 08:52 PM

    It is possible to build a tunnel gre in hub and spoke?

    For example

    We would like to have a vlan example vlan 999 to pass between all controllers though a hub

     

    Let say i got 3 controllers

    I got the vlan 999 that will pass betweent controllers

     

    Copntroler 1 = 192.168.99.1 Spoke1

    Controler 2 = 192.168.99.2  HUB

    Controller 3 = 192.168.99.3  SPoke2

     

    Now i build my GRE Tunnel from Hub 1 to spoke 1( The tunnel works fine i can pass traffic between them

     

    Now i build my GRE tunnel  from hub to spoke 2 ( ( The tunnel works fine i can pass traffic between them)

     

     

    Now here is the problem

    If i try to ping from spoke 1 to spoke 2 and the packet has to pass trhough the hub i dont reach...

    Do i need to add anything to make this work? or its impossible?

     

    The config is something like this :

     

    HUB to spoke 1

    interface tunnel 60
            tunnel source 10.10.10.5
            tunnel mode gre 0
            tunnel destination 10.10.20.5
    tunnel vlan 999
    trusted
    no inter-tunnel-flooding

    HUB To SPOKE 2

     

    interface tunnel 61
            tunnel source 10.10.10.5
            tunnel mode gre 0
            tunnel destination 10.10.30.5
    tunnel vlan 5
    trusted
    no inter-tunnel-flooding

    Should i just enable the inter tunnel flooding?  i saw it in a config  looking for a example of configs but it donest not say too much of what is it on the manual anyways

     

    Cheers

    Carlos 



  • 2.  RE: Tunnel GRE hub and spoke
    Best Answer

    Posted Jun 15, 2016 06:30 PM

    It was the non inter tunnel flooding

    I just needed to enable it.

     

    Cheers

    Carlos