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Monitoring Interfaces and Switching Functions

SUMMARY This section describes how to monitor interfaces and switching functions.

Displaying Real-Time Interface Information

Enter the monitor interface command to display real-time traffic, error, alarm, and filter statistics about a physical or logical interface:

Replace interface-name with the name of a physical or logical interface. If you specify the traffic option, statistics for all active interfaces display.

The real-time statistics update every second. The Current delta and Delta columns display the amount the statistics counters have changed since the monitor interface command was entered or since you cleared the delta counters. Table 1 and Table 2 list the keys you use to control the display using the interface-name and traffic options. (The keys are not case sensitive.)

Table 1: CLI monitor interface Output Control Keys

Key

Action

c

Clears (returns to 0) the delta counters in the Current delta column. The statistics counters are not cleared.

f

Freezes the display, halting the update of the statistics and delta counters.

i

Displays information about a different interface. You are prompted for the name of a specific interface.

n

Displays information about the next interface. The device scrolls through the physical and logical interfaces in the same order in which they are displayed by the show interfaces terse command.

q or ESC

Quits the command and returns to the command prompt.

t

Thaws the display, resuming the update of the statistics and delta counters.

Table 2: CLI monitor interface traffic Output Control Keys

Key

Action

b

Displays the statistics in units of bytes and bytes per second (bps).

c

Clears (returns to 0) the delta counters in the Delta column. The statistics counters are not cleared.

d

Displays the Delta column instead of the rate column—in bps or packets per second (pps).

p

Displays the statistics in units of packets and packets per second (pps).

q or ESC

Quits the command and returns to the command prompt.

r

Displays the rate column—in bps and pps—instead of the Delta column.

The following are sample displays from the monitor interface command:

Note:

The output fields that display when you enter the monitor interface interface-name command are determined by the interface you specify.

Monitoring Ethernet Switching

Purpose

View information about the Ethernet Switching interface details.

Action

Select Monitor>Switching>Ethernet Switching in the J-Web user interface, or enter the following CLI commands:

  • show ethernet-switching table

  • show ethernet-switching mac-learning-log

Table 3 summarizes the Ethernet Switching output fields.

Table 3: Summary of Ethernet Switching Output Fields

Field

Values

Additional Information

VLAN

The VLAN for which Ethernet Switching is enabled.

-

MAC Address

The MAC address associated with the VLAN. If a VLAN range has been configured for a VLAN, the output displays the MAC addresses for the entire series of VLANs that were created with that name.

-

Type

The type of MAC address. Values are:

  • static—The MAC address is manually created.

  • learn—The MAC address is learned dynamically from a packet's source MAC address.

  • flood—The MAC address is unknown and flooded to all members.

-

Age

The time remaining before the entry ages out and is removed from the Ethernet switching table.

-

Interfaces

Interface associated with learned MAC addresses or All-members (flood entry).

-

VLAN-ID

The VLAN ID.

-

MAC Address

The learned MAC address.

-

Time

Timestamp when the MAC address was added or deleted from the log.

-

State

Indicates the MAC address learned on the interface.

-

Monitoring Interfaces

Purpose

View general information about all physical and logical interfaces for a device.

Action

Enter the following show commands in the CLI to view interface status and traffic statistics.

  • show interfaces terse

    Note:

    On SRX Series devices, when configuring identical IPs on a single interface, you will not see a warning message; instead, you will see a syslog message.

  • show interfaces extensive

  • show interfacesinterface-name

Note:

If you are using the J-Web user interfaces, select Monitor>Interfaces in the J-Web user interface. The J-Web Interfaces page displays the following details about each device interface:

  • Port—Indicates the interface name.

  • Admin Status—Indicates whether the interface is enabled (Up) or disabled (Down).

  • Link Status—Indicates whether the interface is linked (Up) or not linked (Down).

  • Address—Indicates the IP address of the interface.

  • Zone—Indicates whether the zone is an untrust zone or a trust zone.

  • Services—Indicates services that are enabled on the device, such as HTTP and SSH.

  • Protocols—Indicates protocols that are enabled on the device, such as BGP and IGMP.

  • Input Rate graph—Displays interface bandwidth utilization. Input rates are shown in bytes per second.

  • Output Rate graph—Displays interface bandwidth utilization. Output rates are shown in bytes per second.

  • Error Counters chart—Displays input and output error counters in the form of a bar chart.

  • Packet Counters chart—Displays the number of broadcast, unicast, and multicast packet counters in the form of a pie chart. (Packet counter charts are supported only for interfaces that support MAC statistics.)

To change the interface display, use the following options:

  • Port for FPC—Controls the member for which information is displayed.

  • Start/Stop button—Starts or stops monitoring the selected interfaces.

  • Show Graph—Displays input and output packet counters and error counters in the form of charts.

  • Pop-up button—Displays the interface graphs in a separate pop-up window.

  • Details—Displays extensive statistics about the selected interface, including its general status, traffic information, IP address, I/O errors, class-of-service data, and statistics.

  • Refresh Interval—Indicates the duration of time after which you want the data on the page to be refreshed.

  • Clear Statistics—Clears the statistics for the selected interface.

Monitoring PPP

Purpose

Display PPP monitoring information, including PPP address pool information, session status for PPP interfaces, cumulative statistics for all PPP interfaces, and a summary of PPP sessions.

Note:

PPP monitoring information is available only in the CLI. The J-Web user interface does not include pages for displaying PPP monitoring information.

Action

Enter the following CLI commands:

  • show ppp address-pool pool-name

  • show ppp interface interface-name

  • show ppp statistics

  • show ppp summary