SRX

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  • 1.  Bridge domains, Revisited.

    Posted 11-01-2025 19:04

    I would like to know if anyone has experience with this block. I want more additions but I haven't fully checked what is possible. It's a virtual switch so it seems to end up lean. Anyone got any ideas? It shows a lot of options but many are not compatible.

    Does anyone know how to use bridge-domains in the newer srx? This fits in my srx550. In srx300 bridge-domains is not present.

    virtual-switch in srx300 seemed problematic at first try. bridge domains are required, it seems.



       MyVRSwitch {

            instance-type virtual-switch;

            access {

                address-assignment {

                    neighbor-discovery-router-advertisement p4;

                    pool p1 {

                        family inet {

                            network 192.168.1.0/24;

                        }

                    }

                    pool p2 {

                        family inet6 {

                            prefix 2001:558::0/64;

                        }

                    }

                    pool p3 {

                        family inet6 {

                            prefix 2601:204::0/64;

                        }

                    }

                    pool p4 {

                        family inet6 {

                            prefix fe80::0/64;

                        }

                    }

                }

            }

            vrf-advertise-selective {

                family {

                    inet-mvpn;

                    inet6-mvpn;

                }

            }

            forwarding-options {

                load-balance {

                    per-prefix {

                        hash-seed 24051;

                    }

                }

            }

            bridge-domains {

                VR2 {

                    vlan-id-list [ 1 1028 ];

                    bridge-options {

                        mac-table-aging-time 5304;

                    }

                }

            }

        }

    }



    ------------------------------
    Adrian Aguinaga
    B.S.C.M. I.T.T. Tech
    (Construction Management)
    A.A.S. I.T.T. Tech
    (Drafting & Design)
    ------------------------------


  • 2.  RE: Bridge domains, Revisited.

    Posted 03-18-2026 16:09

    Reviving post!



    ------------------------------
    Adrian Aguinaga
    B.S.C.M. I.T.T. Tech
    (Construction Management)
    A.A.S. I.T.T. Tech
    (Drafting & Design)
    ------------------------------



  • 3.  RE: Bridge domains, Revisited.

    Posted 04-07-2026 19:22

    Reviving post!



    ------------------------------
    Adrian Aguinaga
    B.S.C.M. I.T.T. Tech
    (Construction Management)
    A.A.S. I.T.T. Tech
    (Drafting & Design)
    ------------------------------



  • 4.  RE: Bridge domains, Revisited.

    Posted 07-20-2026 20:18

    Reviving post!!!



    ------------------------------
    Adrian Aguinaga
    B.S.C.M. I.T.T. Tech
    (Construction Management)
    A.A.S. I.T.T. Tech
    (Drafting & Design)
    ------------------------------



  • 5.  RE: Bridge domains, Revisited.

    Posted 08-05-2026 23:40

    Reviving post!



    ------------------------------
    Adrian Aguinaga
    B.S.C.M. I.T.T. Tech
    (Construction Management)
    A.A.S. I.T.T. Tech
    (Drafting & Design)
    ------------------------------



  • 6.  RE: Bridge domains, Revisited.

    This message was posted by a user wishing to remain anonymous
    Posted 19 days ago
    This message was posted by a user wishing to remain anonymous

    eugene1973 you need to first check on google then be more specific with your questions on the forum.

    On an SRX300-series, don't try to reproduce the older SRX550 routing-instances … instance-type virtual-switch … bridge-domains design. The relevant Layer-2 model is normally global vlans plus family ethernet-switching on ports, with irb interfaces for L3 gateways.




  • 7.  RE: Bridge domains, Revisited.

    Posted 19 days ago

    You may have misinterpreted my post. I realize that vlans on one model and irb's on another are not the same code statements. Bridge domains happen to operate properly on either of the two models. Virtual switch(srx300) does not operate the same way as the srx550 model. The failure i hoped someone could reproduce is for the srx300. That is another post. Bridge domains is a way for me to combine the srx300 and the srx550 together to make sure virtual switch run more properly. So I don't have to put virtual switch on the srx300, but it is still on the srx550. I want someone to help me with virtual switch as stand alone on the srx300. Which is a different post. But its ok to talk about here, in retrospect.



    ------------------------------
    Adrian Aguinaga
    B.S.C.M. I.T.T. Tech
    (Construction Management)
    A.A.S. I.T.T. Tech
    (Drafting & Design)
    ------------------------------