Example: Multiple Atm Virtual Circuits Over A Single Pseudowire; Figure 127: Martini Circuit Deployment For Transmission Of Multiple Atm Vcs - Juniper JUNOSE 11.2.X BGP AND MPLS Configuration Manual

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Example: Multiple ATM Virtual Circuits over a Single Pseudowire

Figure 127: Martini Circuit Deployment for Transmission of Multiple ATM VCs over a SIngle
Pseudowire
Service Provider MPLS Backbone Network
Customer switch 1 (CE1)
PE1
ATM switch
Copyright © 2010, Juniper Networks, Inc.
host1(config-if)#interface fastEthernet 1/1.2
host1(config-if)#vlan id X
where X represents a valid V-LAN ID.
The following examples are valid configurations on a VLAN major interface:
host1(config-if)#interface fastEthernet 1/1.1
host1(config-if)#svlan id X anyUntagged
host1(config-if)#svlan Ethertype 0x8100
host1(config-if)#interface fastEthernet 1/1.2
host1(config-if)#vlan id Y
host1(config-if)#interface fastEthernet 1/1.3
host1(config-if)#svlan id X X
where the V-LAN ID value, X, is not the same as Y.
S-VLAN Subinterface with an Untagged C-VLAN ID Overview on page 524
svlan id
Figure 127 on page 559 shows a Martini circuit deployment in which the CE-side devices
on either side of the network send and receive ATM cells. An MPLS tunnel that connects
two E Series provider edge routers, PE1 and PE2, and ATM cross-connects provide a
pseudowire between the ATM VCs on the two routers. PE2 is the remote router located
at the other side of the service provider core. A customer edge ATM switch, CE1, and the
provider edge router, PE1, on one side of the core are connected by an ATM port. Similarly,
PE2 and CE2 are connected by an ATM port. The necessary MPLS Martini circuit
configuration and VPI/VCI range configuration are added to the ATM ports on PE1 and
PE2. The LDP signaling protocol performed the signaling operation and set up the
pseudowire (a pair of unidirectional LSPs, from PE1 to PE2 and from PE2 to PE1) for
transporting the ATM cells between CE1 and CE2.
pseudo wire LSP
PE2
pseudo wire LSP
CE1 transmits ATM cells on the ATM port connected to PE1. The transmitted cells contain
VPI/VCI values that are within the range specified as part of the MPLS Martini configuration
on the ATM port of PE1. If cell concatenation is configured on that ATM port of PE1, PE1
accumulates the received ATM cells. If cell concatenation is not specified, cell
concatenation count is reached, or the concatenation timer expired, PE1 encapsulates
Chapter 9: Configuring Layer 2 Services over MPLS
Customer switch 2 (CE2)
ATM switch
559