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adding small switch (unmanaged) to EX VC

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  • 1.  adding small switch (unmanaged) to EX VC

    Posted 08-29-2018 05:35

    What would be port setting from EX side if I would like to add small (unmanaged) switch ? Thank you



  • 2.  RE: adding small switch (unmanaged) to EX VC

    Posted 08-29-2018 08:20

    I would just connect it on a normal access port. Potentially configure spanning-tree edge together with bpdu-block to protect against bridge loops.

     

    You are not mentioning which EX series the VC is built on. If you need help configuring the features above let us know which type of Juniper switch and we can point you in the right direction.



  • 3.  RE: adding small switch (unmanaged) to EX VC

    Posted 08-29-2018 08:22

    Sorry about that. EX 4300 series VC 



  • 4.  RE: adding small switch (unmanaged) to EX VC
    Best Answer

    Posted 08-29-2018 08:35

    This should work on ELS style switches (EX2300, EX3400, EX4300 and similar). Example with ge-0/0/4.

    ## Interface config - recovery timeout relates to mac-limit
    user@els-switch# show interfaces ge-0/0/4
    description "Link to unmanaged switch";
    unit 0 {
        family ethernet-switching {
            vlan {
                members XXX;
            }
            storm-control default;
            recovery-timeout 60;
        }
    }
    
    ### spanning-tree edge port + bpdu-block
    user@els-switch# show protocols rstp
    interface ge-0/0/4 {
        edge;
    }
    bpdu-block-on-edge;
    
    ### recovery timeout for bpdu-block - otherwise you have to clear the block manually
    user@els-switch# show protocols layer2-control
    bpdu-block {
        disable-timeout 60;
    }
    
    ### limits number of mac addresses which will be learned. When the 25th shows up, the port i shut down. Can be used to ensure no ### daisy-chaining occurs from the unmanaged switch (or AP connected to it...)
    user@els-switch# show switch-options
    interface ge-0/0/4.0 {
        interface-mac-limit {
            24;
            packet-action shutdown;
        }
    }
    
    
    
    


  • 5.  RE: adding small switch (unmanaged) to EX VC

    Posted 08-29-2018 09:33

    Thank You Jonas, its exactly what I need.