Cisco 3900 Series and Cisco 2900 Series Hardware Installation Guide
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- Updated:
- April 13, 2012
Chapter: Online Insertion Removal
Online Insertion Removal and Hot-Swapping
Online insertion and removal (OIR) enables you to replace faulty modules without affecting system operation, which is similar to hot-swapping. OIR commands are issued before removing a module and after installing a module. When performing OIR, an identical module must be used to replace the original one. If performing OIR on multiple modules within a router, perform the operation on one module at a time.
The module must be in energywise full-power mode for OIR commands to be issued. If the module is in energywise power-saving or shutdown mode, OIR commands can not be issued, and the module should not be removed.
Note
OIR is only supported on the Cisco 3925, 3925E, 3945, and 3945E ISRs.
The difference between hot-swapping and OIR is that OIR requires performing IOS commands before and after the OIR. Hot-swapping is strictly a hardware function and requires no commands. Not all router components or modules use OIR, or can be hot swapped.
The following items use OIR in the Cisco 3925, 3925E, 3945, and 3945E ISRs:
Note Network modules must be inserted into a network module adapter. The network module adapter and network module must always remain together. They function as one unit.
OIR Procedures
The following procedures describe using the OIR process to remove and replace data and voice modules.
Removing a Module
From a console terminal issue the hw-module sm {slot} oir-stop command. The service module adapter LED blinks then turns off, and the console displays a prompt signaling the module can be removed. See the following output:
*Nov 11 22:40:54.299: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM4/0, changed state to down
Removing a Voice Module
Note All voice ports, controllers, transcoding, conferencing, and MTP dspfarm profiles should be shut down before removing a voice module.
From a console terminal issue the hw-module sm {slot} oir-stop command. The service module adapter LED blinks then turns off, and the console displays a prompt signaling the module can be removed. See the following output:
*Nov 11 22:40:54.299: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM4/0, changed state to down
Inserting a Data or Voice Module
This step is only required if the oir-stop command was issued and the module was not physically removed from the slot. If the module was physically removed, this command is not needed.
From a console terminal issue the hw-module sm {slot} oir-start command. The console displays a output showing the module changing states. See the following output:
Router#
*Nov 11 21:06:19.442: %LINK-3-UPDOWN: Interface ATM2/0, changed state to up
*Nov 11 21:06:20.442: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM2/0, changed state to up
Hot-Swapping Procedures
The following items can be hot-swapped:
See the “Replacing a Fan Tray or Air Filter” section and the “Replacing Power Supplies and Redundant Power Supplies” section.
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