Pos Tab - Cisco VS-C6509E-S720-10G User Manual

Chapter 5 Physical Object Dialog Boxes

POS Tab

Figure 5-88
Figure 5-88 POS Tab of the C6576M OSM POS Subinterface Dialog Box
POS Interface Area
The POS Serial Interface area contains the following information:
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•
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Path Message (C2) Area
The Path Message (C2) area contains the following information:
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shows the POS tab of the C6576M OSM POS Subinterface dialog box.
CRC—Cyclical redundancy check (CRC) word size. The CRC is an error-checking technique that
uses a calculated numeric value to detect errors in transmitted data.
Payload Scrambling—Indicates whether or not SONET payload scrambling is enabled on the
interface. Payload scrambling ensures that there is sufficient bit-transition density to maintain the
transmit clock for synchronous signalling. Both ends of the connection must use the same
scrambling algorithm.
Encapsulation—Indicates whether HDLC or PPP encapsulation is used on the interface.
SONET Overhead C2 Byte—Value of the SONET overhead Path Signal Label (C2), which indicates
the contents of the SONET STS-SPE Higher Order VC. This attribute is read-only. These are
possible values:
207 (0xCF) = PPP or HDLC with no payload scrambling
–
22 (0x16) = PPP or HDLC with payload scrambling
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C6576M OSM POS Subinterface Dialog Box
Cisco 6500/7600 Series Manager User Guide
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