Cisco ASR 903 Manual page 131

Clocking
G.781
Option I
0001
0000
0010 QL-PRC
0111
0011
0100 QL-SSU-A
0101
0110
1000 QL-SSU-B
1001
1101
1010
1011 QL-SEC
1100
1110
1111 QL-DNU
When the best available clock is to be selected, there are two modes for consideration. In quality disabled mode,
only clock availability and priority matter, and quality level is ignored. In quality mode, quality level is used a
selection criteria too.
OL-30526-01
Table 4. Clock Quality Level Matrix
ESMC
Option II Option I
QL-PRS
QL-STU
QL-ST2
QL-TNC
QL-ST3E
QL-ST3
QL-EEC1
QL-SMC
QL-PROV
QL-DUS
Configuration for BGP PIC & RFC3107 (with ISIS) ▀
PTP Clock Class
Option II
80
82
84
86
88
90
92
94
96
98
100
QL-EEC2 102
104
106
108
110
Cisco ASR 903 Router Design and Deployment Guide▄
131