Mx Series Router In An Atm Ethernet Interworking Function; Mx Series Router Atm Ethernet Interworking Function; Figure 10: Atm Ethernet Vlan Interworking - Juniper JUNOS OS 10.4 Manual

CHAPTER 8
MX Series Router in an ATM Ethernet
Interworking Function

MX Series Router ATM Ethernet Interworking Function

Copyright © 2012, Juniper Networks, Inc.
MX Series Router ATM Ethernet Interworking Function on page 77
Example: Configuring MX Series Router ATM Ethernet Interworking on page 79
You can configure an MX Series router as part of an ATM Ethernet interworking function
(IWF) scenario mapping outer and inner VLAN tags to ATM Virtual Path Identifier (VPI)
and Virtual Channel Identifier (/VCI).
The ATM Ethernet interworking scenario is shown in
router is configured as the Provider Edge 2 (PE2) router in the figure to support the ATM
Ethernet IWF. Ethernet is the only transport type supported.

Figure 10: ATM Ethernet VLAN Interworking

ATM DSLAM Service
CE1
Customer Edge 1:
Provider Edge 1
ATM DSLAM
The PE1 router translates between ATM and Ethernet VLANs. Only an M Series router
can function as the PE1 router.
The PE1 router translates between the ATM VPI and VCI and Ethernet VLAN tags as
follows:
ATM VPI to and from outer VLAN tag of the Ethernet frame
ATM VCI to and from inner VLAN tag of the Ethernet frame
Figure 10 on page
L2 circuits (if-switch)
I/P backhaul
LSP1
PE1 PE2
LSP2
Provider Edge 2
VPI maps to outer VLAN tag
VCI maps to inner VLAN tag
77. The MX Series
Stacked VLAN Service
CE2
Customer Edge 2:
Ethernet B-RAS
77