5 Protection Switching Schemes
5 Protection Switching Schemes
5 Protection Switching Schemes
Classifications
LINEAR 1+1 1:1 1:N 1+1 MSP RING SNCP MSSP(2F) MSSP (4F)
Tejas Networks India Ltd., 2007, Proprietary Information
Protection Schemes
1+1 Protection
Protection Schemes
1:1 Protection
Unidirectional Operation
Bidirectional Operation
1+1 MSP
The MSP groups can be configured as uni-directional or bi-directional
Normal Operation
1+1 MSP
Switching in case of uni-directional configuration
1+1 MSP
Switching in case of bi-directional configuration
SNCP
Normal Operation
SNCP
SNCP
MS-SP
Normal Operation STM#1
STM#1
Work Channel
C STM#1
MS-SP
Switching in case of
STM#1 A
fiber cut
STM#9
MS-SP-2F
A B C
MS-SP-4F
A B C
MS-SP-4F
A B C
MS-SP-4F
A B C
External Commands
Lockout of protection
Clear
Thank You