Monitoring Interfaces; Setting A Baseline; Displaying Counters And Time Intervals - Juniper PHYSICAL LAYER - CONFIGURATION GUIDE V11.1.X Configuration Manual

JUNOSe 11.1.x Physical Layer Configuration Guide
NOTE: Remote loopback is available only on frame-based T3 interfaces configured
to use C-bit framing.

Monitoring Interfaces

From User Exec mode, use the following show commands to monitor and display
the T3 or E3 interface information:

Setting a Baseline

You can set a statistics baseline for serial interfaces using the baseline interface
serial command. Use the delta keyword with the show commands to display statistics
with the baseline subtracted.

Displaying Counters and Time Intervals

Counters and time intervals are MIB statistics, which are defined in
RFC 2496 Definitions of Managed Objects for the DS3/E3 Interface Types (January
1999).
The show controllers t3 slot/port all command displays the following interface
information:
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Monitoring Interfaces
local Loops the data back toward the router; on supported line modules,
also sends an alarm indication signal (AIS) out toward the network
network Loops the data toward the network before the framer processes
the data
payload Loops the data toward the network after the framer processes the
data
remote Sends a far end alarm code in the C-bit framing, as defined in ANSI
T1.404, to notify the remote end to activate or (when you use the no version)
deactivate the line loopback
Example
host1(config-controll)#loopback local
Use the no version to restore the default configuration, no loopback.
See loopback.
host1#show controllers t3 0/1
host1#show controllers e3 3/2
Status information
T3 current interval counters Displays the counters for the current interval
T3 last interval counters Displays the counters for the previous interval