Juniper Networks JUNOS OS 10.4 User Manual

Page 82

The following operations are performed when you use the

vlan-id all

configuration:

•

The logical interfaces are configured as a trunk port that multiplexes traffic from
multiple VLANs and usually interconnects switches.

•

All the VLAN identifiers are associated with a Layer 2 trunk port. Each of the logical
interfaces,

ge-1/0/0.1

, or

ge-2/0/0.1

, or

ge-3/0/0.1

, accepts packets tagged with any

VLAN ID specified in the respective

vlan-id-range

statements.

•

The association of the received packet to a logical interface is done by matching the
VLAN tags of the received packet with the VLAN tags configured on one of the logical
interfaces on that physical port. The

vlan-id all

configuration within the bridge domain

c1-vlan-v1-to-v1000

for

customer-c1-virtual-switch

sets the normalized VLAN value.

For a logical interface with a single VLAN tag, a learning domain implicitly created for
each normalized VLAN of the interface.

•

Bridge domain

c1-vlan-v1-to-v1000

for

customer-c1-virtual-switch

has three logical

interfaces:

•

Logical interface

ge-1/0/0.1

configured on physical port

ge-1/0/0

•

Logical interface

ge-2/0/0.1

configured on physical port

ge-2/0/0

•

Logical interface

ge-3/0/0.1

configured on physical port

ge-3/0/0

•

Packets received on logical interfaces

ge-1/0/0.11

ge-6/0/0.11

with a single VLAN

tag of 1500 in the frame are accepted.

•

Unknown source MAC addresses and unknown destination MAC addresses are learned
based on their normalized VLAN values of 1 through 1000.

•

All packets sent on the VPLS pseudowire have a normalized VLAN tag after the source
MAC address field in the encapsulated Ethernet packet.

•

Although there are only three logical interfaces in the VPLS instance called

customer-c1-virtual-switch

, the same MAC address (for example, M1) can be learned

on different logical interfaces for different VLANs. For example, MAC address M1 could
be learned on logical interface

ge-1/0/0.1

for VLAN 500 and also on logical interface

ge-2/0/0.1

for VLAN 600.

Documentation

•

Ethernet Networking

•

VLANs Within a Bridge Domain or VPLS Instance on page 43

•

Packet Flow Through a Bridged Network with Normalized VLANs on page 44

•

Configuring Learning Domains for VLAN IDs Bound to Logical Interfaces on page 47

Junos OS 13.1 MX Series 3D Universal Edge Routers Solutions Guide