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QFX5100 how to limit port speed ?

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  • 1.  QFX5100 how to limit port speed ?

    Posted 11-13-2017 13:53

    i want to limit to 2G , how to add the firewall policer in to the interfaces xe-0/0/46  unit ?

     

    root@# show interfaces xe-0/0/46
    description "[TRANSIT]  ;";
    unit 0 {
    family ethernet-switching {
    interface-mode trunk;
    vlan {
    members V3000;
    }
    }
    }



  • 2.  RE: QFX5100 how to limit port speed ?

     
    Posted 11-13-2017 16:01

    You could use a single rate two color policer for this purpose as outlined here.

     

    https://www.juniper.net/documentation/en_US/junos12.3/topics/reference/general/policer-summary-configuration-two-color.html

     

    This shows both how to configure the policer on the left and where to apply the policer to the interface on the right in the sample configurations.

     



  • 3.  RE: QFX5100 how to limit port speed ?
    Best Answer

    Posted 11-14-2017 01:12

    You can also do something similar to this example:

     

    class-of-service {
            interfaces {
                    xe-0/0/46 {
                            shaping-rate 2g;
                    }
    
    
    firewall {
        family ethernet-switching {
            filter 2G-limit {
                term 1 {
                    then policer 2G-limit;
                }
            }
        }
        policer 2G-limit {
            if-exceeding {
                bandwidth-limit 2g;
                burst-size-limit 1250k;
            }
            then discard;
        }
    }
    
    xe-0/0/46 {
            unit 0 {
                    family ethernet-switching {
                            vlan {
                                    members V3000;
                            }
                            filter {
                                    input 2G-limit;
                            }
                    }
            }
    
    }