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Overview
• When an SFP is installed, the system initializes that port for operation based upon the current configuration.
If the inserted SFP is incompatible with the current configuration for that port, the port does not become
operational until the configuration is updated.
• Both power supplies are installed and active and the load may be shared between them or a single PSU
could support the whole load. When a power supply is not working or the input cable is removed, the
remaining power supply takes the entire load without disruption.
• When a fan tray is removed or replaced, there is no need to power down the chassis. However, when the
fan tray is removed from chassis the chassis shuts down automatically after some time, depending on
the ambient temperature. The time duration before the chassis shuts down is shown in the table below:
Table 11: Cisco NCS 4201 Shut Down Time Table
Sl.
1
2
3
4
5
6
7
8
9
10
Inlet Ambient Temperature (ºCelsius)
–10 to –5
–4 to 15
16 to 29
30 to 40
41 to 44
45 to 49
50 to 54
55 to 59
60 to 64
65 and above
Online Insertion and Removal
Shut Down Time (Minimum)
14 minutes
8 minutes
6 minutes 30 seconds
4 minutes 30 seconds
3 minutes 20 seconds
2 minutes 50 seconds
2 minutes 10 seconds
1 minutes 35 seconds
1 minute
35 seconds
Cisco NCS 4201 Hardware Installation Guide
11
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