Online Insertion And Removal; Oir Monitoring - Cisco ASR 9000 Series Installation Manual

Chapter 5 Replacing Cisco ASR 9000 Series Router Components

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,
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, RP, FC, and line
cards. 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.
A card with an OIR count that exceeds 175 will generate a minor alarm against that slot. If the card OIR
Note
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.
Cisco ASR 9000 Series Aggregation Services Router Hardware Installation Guide
Prerequisites and Preparation
5-3