Online Insertion And Removal - Cisco PA-VXA Series Installation And Configuration Manual

Chapter 3 Removing and Installing Port Adapters

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 PA-VXA, PA-VXB, or PA-VXC port adapter
in Cisco 7200 series routers, Cisco 7200 VXR routers, Cisco 7301 routers, and Cisco 7401ASR routers.
The Cisco 7301 router is currently supported by the PA-VXB-2TE1+(=)
Note
and the PA-VXC-2TE1(=) port adapters only.
The Cisco 7401ASR router is currently supported by the PA-VXB-2TE1+(=)
Note
and the PA-VXC-2TE1+(=) port adapters only.
Although the Cisco 7500 series routers support online insertion and removal of the VIP motherboard,
individual port adapters cannot be inserted or removed from a VIP without first removing it from the
chassis. To install a new port adapter in a Cisco 7500 series router, you must first install it on a VIP
motherboard.
Caution To prevent system problems, do not remove the PA-VXA, PA-VXB, or PA-VXC from the VIP
motherboard. To install or replace these port adapters, first remove the VIP from its interface
processor slot.
It is wise to gracefully shut down the system before removing a port adapter that has active traffic moving
through it. Removing a module while traffic is flowing through the ports can cause system disruption.
Once the module is inserted, the ports can be brought back up.
Note As you disengage the module from the router or switch, online insertion and removal (OIR)
administratively shuts down all active interfaces in the module.
OIR allows you to install and replace 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 module 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 module in a supported platform, refer to the
Removal and Installation" section on page
Each module has a bus connector that connects it to the router. The connector has a set of tiered pins in
three lengths that send specific signals to the system as they make contact with the module. The system
assesses the signals it receives and the order in which it receives them to determine if a module is being
removed from or introduced to the system. From these signals, the system determines whether to
reinitialize a new interface or to shut down a disconnected interface.
Specifically, when you insert a module, the longest pins make contact with the module first, and the
shortest pins make contact last. The system recognizes the signals and the sequence in which it receives
them.
OL-3592-02
3-9.
T1/E1 Digital Voice Port Adapter Installation and Configuration
Online Insertion and Removal
"Port Adapter
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