Name: Cisco ASR 903
Brand: Cisco
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Clocking

Sync-E Configuration ▀

Cisco ASR 903 Router Design and Deployment Guide▄

OL-30526-01

133

Figure 28. Input Source Options

Here is the diagram for SYNC-E configuration. R1 router has its BITS port connected to external clock source and

then uses SYNC-E to distribute it to other routers.

Figure 29. SYNC-E

ASR903-R2

Loopback10: 10.10.2.2

ASR903-R4

Loopback10: 10.10.4.4

Gi0/1/0

Gi0/1/1

Gi0/1/0Gi0/1/2

Gi0/1/0Gi0/1/1

Gi0/1/4

ASR903-R3

Loopback10: 10.10.3.3

ASR903-R1

Loopback10: 10.10.1.1

Clock Source

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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