Juniper ex2200c

Question

I have three EX2200c switches. I want use one of them as a core switch and the other two as access layer switches. I created VLANs on all switches, set uplink ports as trunk-mode and all others as access ports. I also set an IP address on all VLANs on the core switch.

I also set up DHCP on the core switch, but I can't get an IP address when computers connect to either access switch.

Even when I manually set the IP address on the computer I can't ping hosts within the same vlan.

So what did I miss ? :)

Answer 1

Here's a sample config pulled from my own home setup. It's the DHCP, VLAN & Interface part of the config, you can use it as a starting point

system {
    services {
        dhcp {
            domain-name [put your domain];
            name-server {
                [ns1 ip];
                [ns2 ip];
            }
            pool 192.168.1.0/24 {
                address-range low 192.168.1.100 high 192.168.1.200;
                router {
                    192.168.1.1;
                }
            }
            pool 192.168.2.0/24 {
                address-range low 192.168.2.100 high 192.168.2.200;
                router {
                    192.168.2.1;
                }
            }
            pool 192.168.3.0/24 {
                address-range low 192.168.3.100 high 192.168.3.200;
                router {
                    192.168.3.1;
                }
            }
        }
    }
}
interfaces {
    ge-0/0/0 {
        description "Access Switch 1";
        unit 0 {
            family ethernet-switching {
                port-mode trunk;
                vlan {
                    members [ VLAN1 VLAN2 VLAN3 ];
                }
            }
        }
    }
    ge-0/0/1 {
        description "Access Switch 2";
        unit 0 {
            family ethernet-switching {
                port-mode trunk;
                vlan {
                    members [ VLAN1 VLAN2 VLAN3 ];
                }
            }
        }
    }
    vlan {
        unit 1 {
            family inet {
                address 192.168.1.1/24;
            }
        }
        unit 2 {
            family inet {
                address 192.168.2.1/24;
            }
        }
        unit 3 {
            family inet {
                address 192.168.3.2/24;
            }
        }
    }
}
vlans {
    VLAN1 {
        vlan-id 1;
        l3-interface vlan.1;
    }
    VLAN2 {
        vlan-id 2;
        l3-interface vlan.2;
    }
    VLAN3 {
        vlan-id 3;
        l3-interface vlan.3;
    }
}