Chapter 3 Removing and Installing the
Online Insertion and Removal
Caution Always handle the port adapter by the carrier edges and handle; never touch the port adapter components or connector pins. (See Figure
Figure 3-1 Handling a Port Adapter
Metal carrier
Printed circuit board
H6420
Online Insertion and Removal
Several platforms support online insertion and removal (OIR) of port adapters; therefore, you do not have to power down routers when removing and replacing a
For the Cisco 7304 router, you must remove the Cisco 7304 PCI port adapter carrier card before removing or replacing port adapters.
For Cisco 7500 series routers, you must remove the VIP before removing and replacing port adapters.
For Cisco 7600 series routers, you must remove the FlexWAN module before removing or replacing port adapters.
It is wise to gracefully shut down the system before removing a port adapter or module that has active traffic moving through it. Removing a port adapter or module while traffic is flowing through the ports can cause system disruption. Once the port adapter or module is inserted, the ports can be brought back up.
Note As you disengage the port adapter from the router or switch, online insertion and removal (OIR) administratively shuts down all active interfaces in the port adapter.
OIR allows you to install and replace port adapters or service adapters (carrier cards, VIPs and FlexWAN modules) while the router is operating; you do not need to notify the software or shut down the system power, although you should not run traffic through the port adapter you are removing while it is being removed. OIR is a method that is seamless to end users on the network, maintains all routing information, and preserves sessions.
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