Cisco ASR 900 Series - Concatenated SONET Frames; SONET Path Level Configuration Parameters

PatternsModes
• 0s—Repeating pattern of zeros.
• 1s—Repeating pattern of ones.
• 2^11 2^11-1 test pattern—Pseudo-random test
pattern that is 2,048 bits in length.
• 2^15-O.151—Pseudo-random O.151 test pattern
that is 32,768 bits in length. Error and Jitter
measurement of 1544, 2048, 6312, 8448, 32064,
44736 kbps.
• 2^20-O.153—Pseudo-random O.153 test pattern
that is 1,048,575 bits in length.
• 2^20-O.151—Pseudo-random QRSS O.151 test
pattern that is 1,048,575 bits in length. Error
and Jitter measurement upto 72 kbps.
• 2^23-O.151—Pseudo-random 0.151 test pattern
that is 8,388,607 bits in length. Error and Jitter
measurement of 34368 kbps and 139264 kbps
•
2^31 2^31-1 test pattern
•
2^9 2^9-1 test pattern
SONET T3 or E3 or CT3 (T1) or VTG T1 or VT
levels
Concatenated SONET Frames
Twenty-eight VTs make up one STS-1. Three STS-1s made up an STS-3 and so on. Any one byte within the
STS frame has a direct relationship to a base VT that helps to make up the STS.
A lower-case "c" in the STS rate stands for "concatenated", and indicates that the interface hardware is not
channelized. Examples of concatenated interfaces are STS-3c and STS-12c.
The STS-1s may be concatenated into sets of 3 or 12 or 24 or 48 or 192 to form STS-3c, STS-12c, and so on.
The STS-1s may be combined only at specific STS-n boundaries within an OC port.
SONET Path Level Configuration Parameters
The following parameters affect SONET configuration at the path level:
• BERT — Starts the BERT test.
• Clock — Specifies the clock source for a path.
• Exit — Exits from SONET path configuration mode.
• Loopback — Sets the entire path in the loopback mode.
1-Port OC-192 or 8-Port Low Rate CEM Interface Module Configuration Guide, Cisco IOS XE Everest 16.7.x
(Cisco ASR 900 Series)
26
Configuring SONET
Concatenated SONET Frames