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Chapter 3
Removing and Installing Port Adapters
Online Insertion and Removal
Figure 3-1
Handling a Port Adapter
Metal carrier
Printed circuit board
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 the PA-POS-2OC3 in the Cisco 7200 VXR
routers, Cisco 7201 router, Cisco 7301 router, and Cisco 7401ASR router.
Although the Cisco 7304 PCI port adapter carrier card, Cisco 7500 series VIP module, and the
Cisco 7600 series FlexWAN module and Enhanced FlexWAN module support OIR, the
individual port adapters when installed on them, do not. To replace port adapters installed on any of
these carrier cards, you must first remove the carrier card, VIP, FlexWAN or Enhanced FlexWAN from
the router and then install or replace port adapters as required.
If a blank port adapter is installed in the Cisco 7304 PCI port adapter carrier card, VIP, or FlexWAN or
Enhanced FlexWAN, you must first remove the carrier card, VIP, FlexWAN, or Enhanced FlexWAN
from the router, then remove the blank port adapter, and then replace it with the port adapter.
To prevent system problems, do not remove port adapters from the Cisco 7304 PCI port adapter carrier
Caution
card, VIP, FlexWAN or Enhanced FlexWAN module or attempt to install other port adapters while the
system is operating.
It is a good idea to shut down the port adapter before removing a port adapter that has active traffic
moving through it. Removing a port adapter while traffic is flowing through the ports can cause system
disruption. When the port adapter is inserted, the ports can be brought back up.
OIR is not supported on the port adapter jacket card. OIR is supported on the port adapter. You must have
Note
the chassis powered off to install or remove the port adapter jacket card.
As you disengage the port adapter from the router or switch, OIR administratively shuts down all active
interfaces in the port adapter. OIR allows you to install and replace port adapters 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.
The following is a functional description of OIR for background information only; for specific
procedures for installing and replacing a port adapter in a supported platform, refer to the
"Port Adapter
Removal and Installation" section on page
3-4.
PA-POS-2OC3 Two-Port Packet-over-SONET Port Adapter Installation and Configuration
3-2
OL-3028-06
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