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Cisco ASR-920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Aggregation Services Router Hardware Installation Guide
Chapter 1 Overview
Cisco ASR 920 Series Routers Features
System–Interface LED Behavior
Online Insertion and Removal
The Cisco ASR 920-24SZ-IM, ASR-920-24SZ-M, ASR-920-24TZ-M Router supports the following
OIR operations:
• When an SFP is removed, there is no effect on traffic flowing on other ports.
• 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.
• Except for TDM IM, you can hot-swap an interface module with a similar interface module on Cisco
ASR-920-24SZ-IM Router. For more information, see “Hot-Swapping the Interface Module”
section on page 3-21.
Table 1-12 1G Copper and 1G SFP LED Indication
Event
1G Copper Port LEDs
(Link/Duplex) 1G SFP Port LEDs
ROMMON Off/Off Off
IOS Shut Off/Off Off
IOS No shut (cable disconnect) Yellow/Off Yellow
IOS No shut (cable connect)
(media-type RJ-45)
Green/Green Off
IOS No shut (cable connect)
(media-type SFP)
Off/Off Green
IOS No shut (cable connect)
(media-type auto)
Off/Off Green
Table 1-13 Management Port LED Indication
Event 10G Port LEDs Management Port LEDs (Link/Duplex)
ROMMON (cable connect) Off Green/Green (1000 Mbps, Full Duplex)
Orange/Green (100/10 Mbps, Full Duplex)
ROMMON (cable disconnect) Off Off/Off
IOS Shut Off Off/Off
IOS No shut (cable disconnect) Orange Off/Off
IOS No shut (cable connect) Green Green/Green in 1G mode
Orange/Green in 100/10M mode
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