Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual page 170

Troubleshooting the CRS-1, 4-slot, 8-slot, or 16-slot System Router Topology
Each SC and RP has two internal switches (0 and 1). Each internal switch has two Gigabit Ethernet
control ports. Port 1 is on the front panel and is used as a control port for interchassis connectivity
(Gigabit Ethernet control). Port 2 is used to connect between the two internal switches in the SC. The
Fast Ethernet (FE) ports of the switches are used within the chassis to connect to other nodes
(intrachassis connections).
Only the Cisco CRS-1 16-Slot Line Card Chassis contains switch 0 and switch 1. The
Note
Cisco CRS-1 8-Slot Line Card Chassis and Cisco CRS-1 4-Slot Line Card Chassis contain switch 0.
SUMMARY STEPS
1.
2.
3.
4.
5.
6.
7.
8.
9.
DETAILED STEPS
Command or Action
Step 1
show platform
Example:
RP/0/RP0/CPU0:router# show platform
Step 2
show controllers switch 0 ports location
node-id
Example:
RP/0/RP0/CPU0:router# show controllers switch 0
ports location 0/RP1/CPU0
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
6-160
show platform
show controllers switch 0 ports location node-id
show controllers switch 1 ports location node-id
show controllers switch 0 statistics location node-id
show controllers switch 1 statistics location node-id
show controllers backplane ethernet detail location node-id
Place the DSC in ROMMON mode:
a. admin
config register 0x0
b.
exit
c.
reload
d.
Exit ROMMON mode:
confreg 0x102
a.
reset
b.
Contact Cisco Technical Support if the problem is not resolved
Chapter 6 Troubleshooting the Control Plane Ethernet Network
Purpose
Displays information and status on each node in the system.
Verify that all components in the router are visible and that
the components are in the run state.
If components are not visible in the command output,
proceed to Step 3 and check the GE switch connections as
illustrated in Figure 6-2.
Displays status on a Switch Port 0.
Verify that all ports are in the forwarding state.
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