Online Insertion And Removal; Powering Off The Router - Cisco ASR 9000 Series Manual

Replacing Cisco ASR 9000 Series Router Components
Note The backplane, midplane (only for Cisco ASR 9906 Router and Cisco ASR 9910 Router), PEM, and BPID
cards are not FRUs but are field serviceable.

Online Insertion and Removal

Most Cisco ASR 9000 Series Routers FRUs can be removed and replaced with the power on and the system
operating. This is known as online insertion and removal (OIR). Power modules, fan trays, Route Switch
Processor (RSP) cards, Route Processor (RP) cards, Fabric Controller (FC) cards, Line Cards (LCs), shared
port adapter (SPA), and SPA interface processor (SIP) cards all support OIR. Unless otherwise noted, the
maintenance tasks described in this chapter can be performed while the router remains powered on.
Caution
Never unplug all the fan trays at the same time.
Note
Although the power trays are not a true FRU because they do not support OIR, a procedure for replacing the
power trays in Cisco ASR 9000 Series Routers is included in this chapter if a replacement becomes necessary.
OIR Monitoring
The BPID board monitors OIR by counting the number of card insertions for each slot and saving that
information in non-volatile memory. OIR monitoring is done for all fan trays, RSP cards, RP cards, FCs, and
LCs. A card insertion is determined by the CAN Bus Controller (CBC) of the inserted card booting up and
sending a CBC message which is intercepted by the BPID board. Note that a CBC reset or power cycle on a
card will also be interpreted as a card insertion.
Note A card with an OIR count that exceeds 175 will generate a minor alarm against that slot. If the card OIR count
exceeds 200, a major alarm is generated against that slot. Fan tray insertion counts are not checked against a
threshold. See the Release Notes for Cisco ASR 9000 Series Aggregation Services Routers for Cisco IOS XR
Software Release 3.9.1 for information about CLI commands for obtaining and resetting card insertion data.

Powering Off the Router

Caution
Do not turn off the switch on the power tray to remove individual power modules. Power modules support
OIR, so they can be removed and replaced with the power on and the system operating.
If it becomes necessary to turn all power off to the router, follow these steps:
Replacing Cisco ASR 9000 Series Router Components
Online Insertion and Removal
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