Nokia 7210 SAS-Mxp - Temperature Threshold Alarm and Fan Speed

7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
The SSM of Synchronous Ethernet uses an Ethernet OAM PDU that uses the slow protocol subtype. For a
complete description of the format and processing, see ITU-T G.8264.
6.5.6.1 Clock source quality level definitions
This section describes the clock source quality levels identified for tracking network timing flow in
accordance with the network deployment options defined in Recommendation G.803 and G.781. The
Option I network is developed on the original European SDH model; Option II network is a network
developed on the North American SONET model.
In addition to the QL values received over SSM of an interface, the standards define the following
additional codes for internal use:
• QL INVx is generated internally by the system if and when an unallocated SSM value is received, where
x represents the binary value of this SSM. Within the SR OS, these independent values are assigned as
the single value QL-INVALID.
• QL FAILED is generated internally by the system if and when the terminated network synchronization
distribution trail is in the signal fail state.
The internal quality level of QL-UNKNOWN is used to differentiate from a received QL-STU code, but is
equivalent for the purposes of QL selection.
The following table lists the synchronization message coding and source priorities for SSM values received
on port.
Table 31: Synchronization message coding and source priorities
SSM value received on port
SDH interface
SyncE interface in
SDH mode
SONET interface
SyncE interface in
SONET mode
E1 interface T1 interface (ESF) Internal relative
quality level
0001 (prs) 00000100 11111111
(prs)
1. Best quality
0000 (stu) 00001000 11111111
(stu)
2.
0010 (prc)
0111 (st2)
0010 (prc)
00001100 11111111
(ST2)
3.
0100 (tnc) 01111000 11111111
(TNC)
4.0100 (ssua)
1101 (st3e)
0100 (ssua)
01111100 11111111
(ST3E)
5.
6.1000 (ssub)
1010 (st3/eec2)
1000 (ssub)
00010000 11111111
(ST3)
7.
3HE 18197 AAAB TQZZA
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