Samsung Ubigate iBG3026 Configuration Manual page 183

DA
Outer Ethernet
The backbone Label Switch Routers(LSRs) only look at the top label to switch
the labeled frame across the MPLS domain. It is possible that additional labels
get pushed along the way. The top tunnel label is typically removed by the
penultimate hop(that is, the hop prior the egress LER).
The egress LER infers from the VC label how to process the frame and then
forwards it to the appropriate outgoing port.
The current Ubigate iBG3026 system supports the following encapsulation
type of PW interface: Ethernet, VLAN, PPP
Configuring Minimal L2VPN
The following configuration is based on figure 18.2.
Configuring PE1 (NSM)
Router#configure terminal
Router/configure#interface loopback 0
Router/configure/interface/loopback 0 # ip address 1.1.1.1
32
Router/configure/interface/loopback 0 # exit
Router/configure# router-id 1.1.1.1
Router/configure# interface ethernet 0/2
Router/configure/interface/ethernet (0/2)# ip address
20.20.1.1 24
Router/configure/interface/ethernet (0/2)# label-switching
Router/configure/interface/ethernet (0/2)# enable-ldp
Router/configure/interface/ethernet (0/2)# exit
© SAMSUNG Electronics Co., Ltd.
Etype Tunnel
SA
0x8847 Lable
Header
Ubigate iBG3026 Configuration Guide/Ed.00
VC Inner Ethernet
Lable
Lable Stack Original Ethernet Frame
Ethernet
Header Payload
145