Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010, Configuration Manual

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NOTE: The E120 and E320 routers output for monitor and show commands is
identical to output from other E Series routers, except that the E120 and E320 routers
output also includes information about the adapter identifier in the interface specifier
(
slot/adapter/port ).
Displaying Interface Rate Statistics for VLAN Subinterfaces
You can use the monitor vlan interface command to display bit rate and packet
rate statistics over a specified time interval for one or more VLAN subinterfaces
configured on the router.
To display interface rate statistics for VLAN subinterfaces:
1.
Log in to the router by using a local console session or a virtual terminal (vty)
session (such as a Telnet session).
While you are using the monitor vlan interface command, you must keep the
console or terminal session open and you cannot issue any other commands at
the session during this time.
For information about logging in to the router, see Accessing the CLI in JUNOSe
System Basics Configuration Guide .
2.
Access User Exec mode or Privileged Exec mode.
For information, see Accessing Command Modes in JUNOSe System Basics
Configuration Guide .
3.
Specify the interface identifier for each VLAN subinterface that you want to
monitor.
host1# monitor vlan interface fastEthernet 0/0.1 fastEthernet 4/0.1
display-time-of-day
For information about specifying interface identifiers for VLAN subinterfaces
configured over Ethernet interfaces, see “VLAN Overview” on page 169. For
information about specifying interface identifiers for VLAN subinterfaces
configured over LAG bundles, see “Configuring a VLAN Subinterface for a LAG
Bundle” on page 204.
By default, the router uses a 5-second time interval between polls to calculate
bit rates and packet rates for each specified VLAN subinterface. Optionally, you
can use the
load-interval keyword to specify a nondefault time interval in the
range 5–30 seconds.
You can also include the optional display-time-of-day keyword to show the time
of day at which the router gathers statistics for each interval. Displaying the time
of day enables you to monitor when a particular VLAN subinterface is
underutilized or overutilized.
4.
Review the command output.
host1# monitor vlan interface fastEthernet 0/0.1 fastEthernet 4/0.1
display-time-of-day
Seconds
between Time
Monitoring VLAN and S-VLAN Subinterfaces
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Chapter 5: Configuring VLAN and S-VLAN Subinterfaces