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Cisco CRS-1 Carrier Routing System to Cisco CRS-3 Carrier Routing System Migration Guide
OL-13669-03
Chapter 2 Downgrading Your Cisco CRS-3 Carrier Routing System Router Back to a Cisco CRS-1 Carrier Routing
System Router
Downgrading your Cisco CRS-3 Carrier Routing System 4-Slot Line Card Chassis Back to a Cisco CRS-1 Carrier
Routing System 4-Slot Line Card Chassis
What to Do Next
When all chassis in the multishelf system are operational and communicating with each other, it is time
to continue system configuration, as described in the documents in the
“Related Documents” section on
page 1-86.
Step 5
commit
Example:
RP/0/RP1/CPU0:router(admin-config)# commit
Commits the target configuration to the router running
configuration.
Step 6
Apply power to the new LCC (Rack 1). Starts up the second LCC (Rack 1).
Step 7
Connect all fabric cables that connect the fabric planes
in the new LCC to the FCCs.
Interconnects the fabric cards in the LCC and FCC.
Step 8
In the FCCs, check the LEDs for the cables that
connect to the new LCC (Rack 1).
Green LEDs indicate that the cables are connected
correctly.
• If the LEDs display a color other than green, see
Cisco
IOS XR Getting Started Guide for information on
interpreting the LED display.
Step 9
do show controllers fabric rack-status all
detail
Example:
RP/0/RP1/CPU0:router(admin-config)# do show
controllers fabric rack-status all detail
Displays the status of all racks and additional information
for racks in installation mode.
• Wait for the status in the Rack in Install and Rack out
of Install columns to change to UP for all planes.
Step 10
do show controllers fabric fabric-backpressure
summary
Example:
RP/0/RP1/CPU0:router(admin-config)# do show
controllers fabric fabric-backpressure summary
Displays the backpressure status for all racks.
• The status for the row labeled “Rack 1: All Groups
Received? :” should be “Yes.”
Step 11
no controllers fabric rack 1 install-mode
Example:
RP/0/RP1/CPU0:router(admin-config)# no
controllers fabric rack 1 install-mode
Modifies the target configuration to change the Rack 1
configuration to normal mode.
Step 12
commit
Example:
RP/0/RP1/CPU0:router(admin-config)# commit
Commits the target configuration to the router running
configuration.
Step 13
do show controllers rack-status all detail
Example:
RP/0/RP1/CPU0:router(admin-config)# do show
controllers rack-status all detail
Displays the status of all racks in the system.
• In a properly operating system, the rack status for all
racks should be Normal, and the server status should be
Present.
Command or Action Purpose