Cisco ASR 903 Guide

Clocking
Configuration for BGP PIC & RFC3107 (with ISIS) ▀
Cisco ASR 903 Router Design and Deployment Guide▄
OL-30526-01
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Table 4. Clock Quality Level Matrix
G.781
ESMC
PTP Clock Class
Option I
Option II
Option I
Option II
0001
QL-PRS
80
0000
QL-STU
82
0010
QL-PRC
84
0111
QL-ST2
86
0011
88
0100
QL-SSU-A
QL-TNC
90
0101
92
0110
94
1000
QL-SSU-B
96
1001
98
1101
QL-ST3E
100
1010
QL-ST3
QL-EEC2
102
1011
QL-SEC
QL-EEC1
104
1100
QL-SMC
106
1110
QL-PROV
108
1111
QL-DNU
QL-DUS
110
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.

Cisco ASR 903 Specifications

General

Form Factor	Modular
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Humidity	5% to 95% non-condensing
Redundancy	Yes, redundant power supplies and route processors
Operating System	Cisco IOS XE
Power Supply	AC or DC
Switching Capacity	240 Gbps
Operating Temperature	-40°C to 65°C (-40°F to 149°F)
MTBF	200, 000 hours
Supported Protocols	IPv4, IPv6, MPLS, L2VPN, L3VPN
Interfaces	Gigabit Ethernet, 10 Gigabit Ethernet, T1/E1