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Cisco ASR 9000 Series Aggregation Services Router Getting Started Guide
OL-17502-01
Chapter 6 Troubleshooting the Cisco IOS XR Software
Interfaces Not Coming Up
Interfaces Not Coming Up
The router interfaces are directly used in processing network traffic, so their status information is crucial
to understanding how the device is functioning. This section contains information on the EXEC mode
commands used to verify that the router interfaces are operational. The basic commands used in this
process are summarized in Table 6-3.
Tab l e 6-3 show interface Commands
Command Description
show interfaces Displays detailed information about all interfaces installed or
configured on the device, whether or not they are operational.
show interfaces type instance Specifies a particular interface, rather than displaying information for
all interfaces, as in the following example:
show interface gi0/1/0/0
show ipv4 interface Displays basic, IP-related information for all available interfaces.
show ipv4 interface brief Quickly displays the most critical information about the interfaces,
including the interface status (up or down) and the protocol status.

Verifying System Interfaces

Perform the following steps to verify the system interfaces.
Step 1 Type t he show platform command in administration EXEC to verify that all nodes are in the “IOS XR
RUN” state:
RP/0/RSP0/CPU0:router(admin)# show platform
Node Type PLIM State Config State
-----------------------------------------------------------------------------
0/1/SP MSC(SP) N/A IOS XR RUN PWR,NSHUT,MON
0/1/CPU0 MSC 16OC48-POS/DPT IOS XR RUN PWR,NSHUT,MON
0/2/SP MSC(SP) N/A IOS XR RUN PWR,NSHUT,MON
0/2/CPU0 MSC 16OC48-POS/DPT IOS XR RUN PWR,NSHUT,MON
0/3/SP MSC(SP) N/A IOS XR RUN PWR,NSHUT,MON
0/3/CPU0 MSC 16OC48-POS/DPT IOS XR RUN PWR,NSHUT,MON
0/RSP0/CPU0 RP(Active) N/A IOS XR RUN PWR,NSHUT,MON
0/RSP1/CPU0 RP(Standby) N/A IOS XR RUN PWR,NSHUT,MON
0/SM0/SP FC/S(SP) N/A IOS XR RUN PWR,NSHUT,MON
0/SM1/SP FC/S(SP) N/A IOS XR RUN PWR,NSHUT,MON
0/SM2/SP FC/S(SP) N/A IOS XR RUN PWR,NSHUT,MON
0/SM3/SP FC/S(SP) N/A IOS XR RUN PWR,NSHUT,MON
Step 2
Type t he show ipv4 interface brief command to verify IP address configuration and protocol status:
RP/0/RSP0/CPU0:router# show ipv4 interface brief
Interface IP-Address Status Protocol
gi0/1/0/0 unassigned Shutdown Down
gi0/1/0/1 unassigned Shutdown Down
gi0/1/0/2 unassigned Shutdown Down
gi0/1/0/3 unassigned Shutdown Down
gi0/1/0/4 unassigned Shutdown Down
gi0/1/0/5 unassigned Shutdown Down
gi0/1/0/6 unassigned Shutdown Down