Specifications

26 Chapter 4 Protected Network Topologies
Single Node
Interconnected
Rings
This topology uses one node to connect two separate rings. The interconnecting node
uses four optical ports (two for each ring). Each ring must use two ports on two
separate cards (east and west).
Figure 8 Single Node Interconnection
The Traverse supports the following protection schemes in single node
interconnections:
• UPSR <–> UPSR
• UPSR <–> BLSR
• BLSR <–> BLSR
• UPSR <–> SNCP ring (gateway)
• SNCP ring <–> SNCP ring
• SNCP ring <–> MS-SPRing
• MS-SP ring <–> MS-SPRing
Interconnected
Gateway
Topologies
The Traverse supports the following interconnecting gateway topologies:
• 1+1 APS <–> 1+1 MSP
• UPSR <–> 1+ 1 MSP
• SNCP <–> 1+1 APS
• UPSR <–> SNCP
Node 1