[j-nsp] Multicast / IGMP

[Bill Blackford]

The basic question here is, does Juniper handle multicast on a single vlan differently than Cisco?

I have two Linux mysql hosts configured in a cluster connected to the same switch on the same vlan. They communicate on multicast when that switch is a Cisco 3560 and not at all when that switch is a EX3200. The EX's have igmp-snooping enabled by default, as I believe the Cisco does.

Both interfaces are pretty straight forward. MGT vlan-id is "1", DATABASES vlan-id is "5". Both hosts need to send un-tagged traffic on 802.1q tag 5. 

<snip>
ge-0/0/2 {
    description data-01.mysql;
    unit 0 {
        family ethernet-switching {
            port-mode trunk;
            vlan {
                members [ MGT DATABASES ];
            }
            native-vlan-id 5;
        }
    }
}
ge-0/0/3 {
    description data-02.mysql;
    unit 0 {
        family ethernet-switching {
            port-mode trunk;
            vlan {
                members [ MGT DATABASES ];
            }
            native-vlan-id 5;
        }
    }
}
</snip>

Thank you in advance for any insight,

-b

--
Bill Blackford                     
Senior Network Engineer            
Technology Systems Group           
Northwest Regional ESD             

Logged into reality and abusing my sudo priviledges