Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Configuration Manual page 443

slot Slot in which the module resides
type Type of module
heap (%) Percentage of the RAM that is currently in use by software running
on the module
cpu (%) Percentage of the module CPU capacity currently used; this field
appears only when the detail keyword is omitted
bw exceed Status of bandwidth oversubscription for this slot; this field
appears only when bandwidth oversubscription is configured
Y indicates that this slot is in an oversubscribed slot group
--- indicates that no module is installed or slot has no bandwidth
oversubscription
The following additional fields appear when the detail keyword is used:
last available cpu (%) Average CPU utilization percentage for each
installed module during the last 5-second interval for which data was
available. If the current CPU utilization data for a module is not available
at any point, the last available cpu (%) field displays the last available
5-second CPU utilization percentage, which is the same value that
appears in the cpu (%) field when the detail keyword is omitted. If the
current 5-second CPU utilization data is available, the last available
cpu (%) field and the 5 sec cpu (%) field display the same value.
5 sec cpu (%) Average CPU utilization percentage for each installed
module during the most recent 5-second interval
1 min cpu (%) Average CPU utilization percentage for each installed
module during the most recent 1-minute interval
5 min cpu (%) Average CPU utilization percentage for each installed
module during the most recent 5-minute interval
Depending on the output of the show utilization command when you use
the detail keyword, some or all of the following symbols and explanatory
notes might appear:
--- indicates an empty slot on ERX7xx models, ERX14xx models, or the
ERX310 router. For the E120 and E320 routers, this symbol indicates
either an empty slot, or a fabric slice that resides on an SRP module or
on a switch fabric module (SFM).
??? indicates that the current CPU utilization data is unavailable for the
specified interval. Data might be unavailable for one or more of the
following reasons:
A slot is in an inactive state.
A line module is very busy (that is, using 100 percent of its CPU
capacity) and is unable to send its CPU utilization data to the SRP
module.
A line module is experiencing communication problems that prevent
it from sending its CPU utilization data to the SRP module.
Chapter 6: Managing Modules
413
Monitoring Modules