Figure 125: Ethernet Packet Distribution Over Martini Circuits; Table 67: Martini Circuit Scenarios With Ethernet Raw Mode - Juniper JUNOSE SOFTWARE FOR E SERIES 11.0.X - BGP AND MPLS CONFIGURATION GUIDE 2009-12-30 Configuration Manual

JUNOSe 11.0.x BGP and MPLS Configuration Guide
Table 67 on page 550 describes the different scenarios in which the Martini circuit
configuration is supported, when Ethernet raw mode encapsulation is configured on
the S-VLAN interfaces.

Table 67: Martini Circuit Scenarios with Ethernet Raw Mode

Case
number Sending CE device (CE1)
1 S-VLAN-Aware
2 S-VLAN-Aware
3 S-VLAN-Aware
4 S-VLAN-Aware
5 S-VLAN-Unaware
6 S-VLAN-Unaware
Figure 125 on page 550 shows the transmission of Ethernet packets over a Martini
circuit with ES2 4G, GE-2, GE/FE, ES2 10G, ES2 10G Uplink, and ES2 10G ADV LMs.
The different processing points inside the PE-facing routers are denoted as A, B, C,
and D.

Figure 125: Ethernet Packet Distribution over Martini Circuits

MPLS Edge Router 1
A
Layer 2 services
D
Line
module
External network connections
Internal forwarding paths
Router-fabric traversal
Consider a scenario in which Ethernet raw mode is not enabled on the S-VLAN
subinterface of the PE-facing devices. When a packet reaches the S-VLAN subinterface
on an ingress line module, point A, inside PE1, all packets, regardless of whether
they are tagged or not, are forwarded to the subinterface on the egress line module,
B, inside PE1 without any change. This behavior applies to both ES2 4G LMs, ES2
550
Ethernet Raw Mode Encapsulation for Martini Layer 2 Transport Examples
MPLS network
between local and
remote routers, PE1
and PE2
S-VLAN-Aware
S-VLAN-Unaware
S-VLAN-Aware
S-VLAN-Unaware
S-VLAN-Aware
S-VLAN-Unaware
PE1
B
RT1
MPLS network
RT2
C
Line
module
MPLS tunnel
Whether scenario is
supported, when raw
mode is not configured
Receiving CE Device on the S-VLAN
(CE2) interface
S-VLAN-Aware Supported
S-VLAN-Aware Supported
S-VLAN-Unaware Unsupported
S-VLAN-Unaware Supported
S-VLAN-Unaware Unsupported
S-VLAN-Unaware Supported
MPLS Edge Router 2
PE2
C D
RT2
Layer 2 services
RT1
B
A
Line Line
module module