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Configuring the PoS Module
the interface. Consequently, the BlackDiamond 6800 series switch supports bidirectional
switching, but not unidirectional switching.
Virtual router
BlackDiamond 1
1
2
3
4
A
B
5
6
Ethernet
BlackDiamond 2
1
2
3
4
A
B
5
6
Figure 3-12: Linear 1+1 APS architecture with two switches
The 1+1 architecture can also operate in revertive or nonrevertive mode, which allows you
to determine what action should be taken when traffic is active on the protection line
and the working line becomes operational. The BlackDiamond 6800 series switch
supports both revertive and non-revertive modes of operation.
In revertive mode, when traffic is active on the protection line and the working line
becomes operational, traffic will be switched automatically from the protection line to
the working line.
3-76
7
8
Working
line
7
8
Protection
line
SONET
ring
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Packet Over SONET Module Installation and User Guide
PoS
device
PoS_012
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