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Chapter 3 Installing the Passport 8683POS Module 43
Using the Passport 8683POS Module
Replacing a module
You can hot-swap Passport 8683POS Modules as long as the module you are
removing has the same MDAs installed as the module you are inserting. In this
case, the system saves the configuration. If you hot-swap the module with a
module that has different MDAs installed, you must reconfigure the module.
If you are hot-swapping modules, read the following section for information about
how the routing switch recognizes replacement modules and how to avoid
potential problems.
Starting the system after a module replacement
After you replace a module on your chassis, you can expect the following results:
• In a running system, when you replace an input/output (I/O) module with a
module of the same type, the system restores the configuration of all the ports.
• When you replace a module with one of a different type, the system discards
the configuration of the old ports, and the new ports are added to either the
default VLAN or a null VLAN, depending on the operating mode of the
switch.
• When you save the configuration in nonvolatile random access memory
(NVRAM), turn off the switch, replace a module with a different module
type, and turn the system on again, the system discards the configuration of
the old ports, and adds new ports to either the default VLAN or an unassigned
VLAN, depending on the operating mode of the switch.
Starting the system with an empty slot
When you save the configuration in NVRAM, shut down the system, remove a
module, turn on the chassis with that slot empty, and then populate the slot with a
module of the same type as the one previously there, the system is not able to
restore the original configuration.
Warning: The Passport 8683POS Module itself is hot-swappable; the
MDAs necessary to pass traffic on the module are not hot-swappable.