Table 9: Explanation of K2 Byte
(continued)
Meaning
Bit Value (12345678)
Channel number of working interface
0001–1110
Bit 5 indicates the type of redundancy.
1+1 architecture
0
Bits 6–8 indicate the switching mode.
Reserved for future use
000– 011
Unidirectional mode
100
Bidirectional mode
101
Line remote defect indication (RDI)
110
Line alarm indication signal (AIS)
111
Higher-Level Protocols
See
ERX Module Guide, Appendix A, Module Protocol Support
for information about
the higher-level protocols that the interfaces described in this chapter support.
Platform Considerations
You can configure unchannelized SONET/SDH interfaces on the following E-series
routers:
■
E120 router
■
E320 router
■
ERX-1440 router
■
ERX-1410 router
■
ERX-710 router
■
ERX-705 router
■
ERX-310 router
This section describes the line modules and I/O modules that support SONET/SDH
interfaces.
For detailed information about the modules that support SONET/SDH interfaces on
ERX-14xx models, ERX-7xx models, and the ERX-310 router:
■
See
ERX Module Guide, Table 1, Module Combinations
for detailed module
specifications.
Platform Considerations
■
77
Chapter 3: Configuring Unchannelized OCx/STMx Interfaces
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