Juniper Networks 10.4 SendingTagged or Untagged Packetsover VPLS Virtual Interfaces, Configuringa Normalized VLAN

Then,the source MAC address of a receivedpacket is learned based on the normalized

VLANconfiguration.

Foroutput packets, if the VLAN tags associated with an egresslogical interface do not

matchthenormalized VLAN tags within the packet, then appropriateVLAN tag operations

(suchas push-push, pop-pop, pop-swap, swap-swap, swap,and others) are implicitly

madeto convert the normalized VLAN tags to the VLAN tagsfor the egress logical

interface.Formore information about these operations,see the Junos OS Routing Protocols

ConfigurationGuide.

SendingTagged or Untagged Packetsover VPLS Virtual Interfaces

Ifthe packets sent over the VPLS virtual interfaces(vt- or lsi- interfaces) need to be

taggedby the normalized VLAN, use one of the following configurationstatements:

•vlan-idvlan-number—Tagsall packets sent over the VPLS virtual interfacewith the

configuredvlan-number.For an example of this configuration, see“Example: Configuring

OneVPLS Instance for Several VLANs” on page55.

•vlan-tagsouter outer-vlan-number inner inner-vlan-number—Tagsall packets sent over

theVPLS virtual interfaces with the specified inner and outer VLAN tags.

Ifthe incoming VLAN tagsidentifying a Layer 2 logical interfaceare removed when packets

aresent over VPLS virtual interfaces, use the vlan-idnone statement.

NOTE: Evenwhen the vlan-id none statement is configured,the packets can

stillcontain other customer VLAN tags.

Configuringa Normalized VLAN

Thefollowing factors areimportant when configuring a normalized VLAN:

•Useeither the vlan-id vlan-number statement (to tag all packetswith one normalized

VLANtag) or the vlan-tags outer outer-vlan-numberinner inner-vlan-number statement

(totag all packets with the normalized outer and inner VLAN tags)if you want to tag

packetssent onto the VPLS pseudowires.

•Usethe vlan-id none statement to remove the incoming VLAN tagsidentifying a Layer

2logical interface when packets aresent over VPLS pseudowires. This statement is

alsoused to configure shared VLAN learning.

NOTE: Theoutgoing packets canstill contain customer VLAN tags.

•Ifintegrated routing and bridging (IRB) is configuredfor a bridge domain or a VPLS

routinginstance,then you must configure a normalized VLAN using one of the following

statements:

•vlan-idvlan-number

•vlan-idnone

Junos10.4 MX Series Ethernet ServicesRouters Solutions Guide