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Cisco CRS-1 Series Carrier Routing System Getting Started Guide
Chapter 9 Troubleshooting the Cisco IOS XR Software
Interfaces Not Coming Up
In the following example, the open configuration sessions are displayed with the show configuration
sessions command. The clear configuration sessions command is then used to clear a configuration
session.
RP/0/RP0/CPU0:router# show configuration sessions
Session Line User Date Lock
00000211-002c409b-00000000 con0_RP1_CPU0 UNKNOWN Mon Feb 2 01:02:09 2004
RP/0/RP0/CPU0:router# clear configuration sessions 00000211-002c409b-00000000
session ID '00000211-002cb09b-00000000' terminated
Contacting TAC for Additional Assistance
If you remove configurations and the low-memory condition remains, you may need to contact TAC for
additional assistance. See the “Additional Sources for Information” section on page 1.
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 commands used
to verify that the router interfaces are operational. The basic commands used in this process are
summarized in Table 9-11.
Table 9-12 show interface Commands
Command Description
show interface Displays detailed information about all interfaces installed or
configured on the device, whether or not they are operational.
show interface type instance Specifies a particular interface, rather than displaying information for
all interfaces, as in the following example:
show interface POS0/1/0/0
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 IPv4 protocol
status.
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