Point-To-Point (P2P) Redundant Connection Across Layer 2 Vpn Network; Figure 26: P2P Redundant Connection Through A Layer 2 Vpn Network - Alcatel-Lucent 7750 SR OS Interface Configuration Manual

Point-to-Point (p2p) Redundant Connection Across Layer 2 VPN Network

Active
MSAN
Standby
Active
MSAN
Standby

Figure 26: P2P Redundant Connection Through a Layer 2 VPN Network

Figure 26
based on Layer 2 VPN pseudo-wires. The connection between MSAN and a pair of PE routers is
realized by MC-LAG. From MSAN perspective, redundant pair of PE routers acts as a single
partner in LACP negotiation. At any point in time, only one of the routers has an active link(s) in a
given LAG. The status of LAG links is reflected in status signaling of pseudo-wires set between
7750 SR OS Interface Configuration Guide
Aggregation
node
Active
A
Inter-chassis
PW for VLL
Standby
Aggregation
Standby
node
B
Aggregation
node
A
Inter-chassis
PW for VLL
Aggregation
node
B
shows the connection between two multi-service access nodes (MSANs) across network
TLDP
Standby
Active Standby
Active
Active
TLDP
Interface Configuration
Aggregation
node
C
Standby
Inter-chassis
MSAN
PW for VLL
Active
Aggregation
node
C
Aggregation
node
C
Standby
Inter-chassis
MSAN
PW for VLL
Active
Aggregation
node
C
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