Configuring a Trunk Interface on a Bridge Network
On MX Series routers, you can configure a trunk interface on a bridge network.
The following output sample shows trunk port configuration on a bridge network:
user@host# run show interfaces
ge-0/0/0 {
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
unit 0 {
encapsulation vlan-bridge;
vlan-id 1;
}
}
ge-2/0/0 {
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 1-200;
}
}
}
ge-2/0/1 {
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
unit 0 {
encapsulation vlan-bridge;
vlan-id 1;
}
}
If you want igmp-snooping to be functional for a bridge domain, then you should not configure interface-mode and irb for that bridge domain. Such
a configuration commit succeeds, but IGMP snooping is not functional,
and a message informing the same is displayed as shown after the sample
configuration below:
user@host# run show configuration
interfaces {
ge-5/1/1 {
flexible-vlan-tagging;
native-vlan-id 1;
unit 0 {
family bridge {
interface-mode trunk;
vlan-id-list 401;
}
}
}
irb {
unit 401 {
family inet {
address 192.168.2.2/27;
}
}
}
}
protocols {
igmp {
interface all;
}
}
bridge-domains {
VLAN-401 {
vlan-id 401;
routing-interface irb.401;
protocols {
igmp-snooping;
}
}
}
user@host# commit
[edit bridge-domains]
'VLAN-401'
IGMP Snooping not supported with IRB and trunk mode interface ge-5/1/1.0
commit complete
To achieve IGMP snooping for a bridge domain, you should use such a configuration as shown in the following example:
user@host# run show configuration
interfaces {
ge-0/0/1 {
flexible-vlan-tagging;
native-vlan-id 1;
encapsulation flexible-ethernet-services;
unit 0 {
encapsulation vlan-bridge;
vlan-id 401;
}
}
irb {
unit 401 {
family inet {
address 192.168.2.2/27;
}
}
}
}
protocols {
igmp {
interface all;
}
}
bridge-domains {
VLAN-401 {
vlan-id 401;
interface ge-0/0/1.0;
routing-interface irb.401;
protocols {
igmp-snooping;
}
}
}
user@host# commit
commit complete