When connecting an Avaya G700 Media Gateway (MG) to an EX Switch, the G700 Media Gateway should be assigned the same VLAN as the VLAN to which the Ethernet ports are connected. By default the G700 uses a native vlan id of 1.
When connecting an Avaya G700 Media Gateway to an EX Switch the link comes up but traffic does not pass.
By default the Avaya G700 is configured with a native VLAN-ID of 1. The EX Switch native vlan-id would have to be configured with this same vlan in order to work properly.
switch@juniper>set interfaces ge-0/0/0 unit 0 family ethernet-switching native-vlan-id 1