Extreme Networks PoS Betriebsanweisung Seite 124

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3-76 Packet Over SONET Module Installation and User Guide
Configuring the PoS Module
the interface. Consequently, the BlackDiamond 6800 series switch supports bidirectional
switching, but not unidirectional switching.
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.
PoS_012
BlackDiamond 1
Virtual router
1234AB5678
1234AB5678
BlackDiamond 2
SONET
ring
Protection
line
Working
line
ADM
PoS
device
Ethernet
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