Which command attaches a VLAN interface to a bridge by creating a bridge port?

Which command attaches a VLAN interface to a bridge by creating a bridge port?

• A. /interface bridge port add bridge=bridge1 interface=vlan10
• B. /interface vlan add name=vlan10
• C. /interface bridge add bridge=bridge1
• D. /interface pppoe-client add

Answer: (A)

In RouterOS, a bridge forwards traffic only for interfaces that are added as bridge ports. To bring a VLAN into a bridge, you first have a VLAN interface (like vlan10) and then attach it to the bridge as a bridge port. The command that does this is the one that creates a bridge port linking the VLAN interface to the bridge, so traffic for that VLAN is included in the bridge’s domain. Other options either create the VLAN interface without attaching it, create a bridge without adding this interface as a port, or perform an unrelated task, so they don’t accomplish attaching the VLAN to the bridge.

In RouterOS, a bridge forwards traffic only for interfaces that are added as bridge ports. To bring a VLAN into a bridge, you first have a VLAN interface (like vlan10) and then attach it to the bridge as a bridge port. The command that does this is the one that creates a bridge port linking the VLAN interface to the bridge, so traffic for that VLAN is included in the bridge’s domain. Other options either create the VLAN interface without attaching it, create a bridge without adding this interface as a port, or perform an unrelated task, so they don’t accomplish attaching the VLAN to the bridge.