Cisco CISCO2650 - 2650 Router Hardware Installation Manual page 326

Online Insertion and Removal of Cisco Network Modules
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 enhanced network modules, or between an onboard
small-form-factor pluggable (SFP) Gigabit Ethernet module and an enhanced network module on Cisco
3825 and Cisco 3845 routers.
Connections can be only established as follows:
•
•
•
The Cisco NM-AON-K9= network module does not support Gigabit Ethernet connections.
Note
Note A module interconnection between the Gigabit Ethernet port on an SFP module and a network module
slot or a network module-to-network module cross-connection is permitted at any given time, but both
types of connections cannot exist at the same time.
Note Connections between the onboard Ethernet ports and network module slots are not supported.
For details about configuring HIMI connections, see the
Interconnect (HIMI) Configuration Guide
http://www.cisco.com/en/US/products/ps5855/prod_configuration_guide09186a008068ea83.html
Online Insertion and Removal of Cisco Network Modules
Some Cisco access 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.
Caution Unlike other network modules, enhanced network modules use hard disks. Online removal of disks
without proper shutdown can result in file system corruption and might render the disk unusable. The
operating system on the network module must be shut down in an orderly fashion before the module
is removed or powered down.
Caution Cisco routers support OIR with similar modules only. If you remove a module, install another module
exactly like it in its place. If you remove a 2-slot module (along with any installed WAN or voice
interface cards), install another module and card combination exactly like it.
For a description of informational and error messages that may appear on the console during this
procedure, see the hardware installation guide for your router.
Cisco Network Modules Hardware Installation Guide
30-4
Between the Gigabit Ethernet port in an installed onboard SFP module on the Cisco 3825 and Cisco
3845 routers
Between Gigabit Ethernet interfaces in network module slots 1 and 2 on the Cisco 3825 router
Between Gigabit Ethernet interfaces in network module slots 2 and 4 on the Cisco 3845 router
Chapter 30
Cisco High-Speed Intrachassis Module
on Cisco.com:
Connecting AON Network Modules
OL-2485-20