Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

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OS 12.3 Ethernet Interfaces Configuration Guide
3. Display extensive status information for a specific interface.
4. Monitor statistics for an interface.
The Table 36 on page 600 lists and describes the operational mode commands you use
to monitor interfaces.
Table 36: Commands Used to Monitor Interfaces
CLI Command
show interfaces terse interface-name
For example: show interfaces terse t1*
show interfaces interface-name
For example: show interfaces t1-x/x/x
show interfaces interface-nameextensive
For example: show interfaces t1-x/x/x extensive
monitor interface interface-name
For example: monitor interface t1-x/x/x
Performing a Loopback Test on an Interface
600
Description
Displays summary information about
the named interfaces.
Displays static status information about
a specific interface.
Displays very detailed interface
information about a specific interface.
Displays real-time statistics about a
physical interface, updated every
second.
Problem The following steps are a general outline of how you use loopback testing to isolate the
source of the interface problem. For more detailed information on a specific interface,
see the corresponding loopback section.
Solution To use loopback testing for interfaces, follow these steps:
1. Diagnose a suspected hardware problem.
a. Create a loopback.
b. Set clocking to internal. (Not for Fast Ethernet/Gigabit Ethernet or Multichannel
DS3 interfaces.)
c. Verify that the status of the interface is up.
d. Configure a static address resolution protocol table entry. (Fast Ethernet/Gigabit
Ethernet interfaces only)
e. Clear the interface statistics.
f. Force the link layer to stay up.
g. Verify the status of the logical interface.
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