Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 416

Online Insertion and Removal of Cisco Network Modules Procedure
Establishing a Gigabit Ethernet Internal Connection
Use the Cisco High-Speed Intrachassis Module Interconnect (HIMI) feature to establish a Gigabit
Ethernet internal logical connection between two network modules, or between an onboard
small-form-factor pluggable (SFP) Gigabit Ethernet module and a network module on a Cisco 3825
router or a Cisco 3845 router.
Connections can be established only as follows:
•
•
•
A module interconnection between the Gigabit Ethernet port on an SFP module on a Cisco 3825 router
Note
or a Cisco 3845 router and a network module slot or a network module-to-network module
cross-connection is permitted at any given time. However, both types of connections cannot be
implemented at the same time.
Connections between the onboard Ethernet ports and network module slots are not supported.
Note
For details about configuring High-Speed Intrachassis Module Interconnect (HIMI) connections, see the
Cisco High-Speed Intrachassis Module Interconnect (HIMI) Configuration Guide
http://www.cisco.com/en/US/products/ps5855/prod_configuration_guide09186a008068ea83.html
Online Insertion and Removal of Cisco Network Modules
Procedure
Some Cisco routers allow you to replace network modules without switching off the router or affecting
the operation of other interfaces. This feature is called online insertion and removal (OIR). OIR of a
module provides uninterrupted operation to network users, maintains routing information, and ensures
session preservation.
Unlike other network modules, Cisco Video Management and Storage System enhanced network
Caution
modules use hard disks. Online removal of network modules without proper shutdown can cause file
system corruption and might render the disk unusable. You must shut down the operating system on
the network module in an orderly way before removing or powering down the module.
Cisco routers support OIR with identical modules only. If you remove a module, install in its place
Caution
another module exactly like the one you removed. If you remove a 2-slot module (along with any
installed WAN or voice interface cards), install another module and card combination exactly like the
one you removed.
Cisco Network Modules Hardware Installation Guide
40-4
Between the Gigabit Ethernet port in an installed onboard SFP module on the Cisco 3825 router or
Cisco 3845 router
Between Gigabit Ethernet interfaces in network module slots 1 and 2 on a Cisco 3825 router
Between Gigabit Ethernet interfaces in network module slots 2 and 4 on a Cisco 3845 router
Chapter 40 Cisco Video Management and Storage System Enhanced Network Modules
on Cisco.com:
OL-2485-20