Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

TechLibrary
Navigation
Table of Contents
Guide That Contains This Content
[+] Expand All
[-] Collapse All

    show ethernet-switching interfaces

    Syntax

    show ethernet-switching interfaces<brief | detail | summary><interface interface-name>

    Release Information

    Command introduced in Junos OS Release 9.0 for EX Series switches.

    In Junos OS Release 9.6 for EX Series switches, the following updates were made:

    • Blocking field output was updated.
    • The default view was updated to include information about 802.1Q tags.
    • The detail view was updated to include information on VLAN mapping.

    In Junos OS Release 11.1 for EX Series switches, the detail view was updated to include reflective relay information.

    Description

    Display information about Ethernet switching interfaces.

    Options

    none
    		—

    Display brief information for Ethernet switching interfaces.

    brief | detail | summary
    		—

    (Optional) Display the specified level of output.

    interface interface-name
    		—

    (Optional) Display Ethernet switching information for a specific interface.

    Required Privilege Level

    view

     

    Related Documentation

     

    List of Sample Output

    show ethernet-switching interfaces
    show ethernet-switching interfaces ge-0/0/15 brief
    show ethernet-switching interfaces ge-0/0/2 detail (Blocked by RTG rtggroup)
    show ethernet-switching interfaces ge-0/0/15 detail (Blocked by STP)
    show ethernet-switching interfaces ge-0/0/17 detail (Disabled by bpdu-control)
    show ethernet-switching interfaces detail (C-VLAN to S-VLAN Mapping)
    show ethernet-switching interfaces detail (Reflective Relay Is Configured)

    Output Fields

    Table 1 lists the output fields for the show ethernet-switching interfaces command. Output fields are listed in the approximate order in which they appear.

    Table 1: show ethernet-switching interfaces Output Fields

    Field Name

    Field Description

    Level of Output

    Interface

    Name of a switching interface.

    none, brief, detail, summary

    Index

    VLAN index internal to Junos OS.

    detail

    State

    Interface state. Values are up and down.

    none, brief, detail

    Port mode

    The access mode is the port mode default and works with a single VLAN. Port mode can also be trunk, which accepts tagged packets from multiple VLANs on other switches. The third port mode value is tagged-access, which accepts tagged packets from access devices.

    detail

    Reflective Relay Status

    Reflective relay allows packets to use the same interface for both upstream and downstream traffic. When reflective relay has been configured, the status displayed is always enabled . When reflective relay is not configured, this entry does not appear in the command output.

    detail

    Ether type for the interface

    Ether type is a two-octet field in an Ethernet frame used to indicate which protocol is encapsulated in the payload of an incoming Ethernet packet. Both 802.1Q packets and Q-in-Q packets use this field. The output displayed for this particular field indicates the interface’s Ether type, which is used to match the Ether type of incoming 802.1Q packets and Q-in-Q packets. The indicated Ether type field is also added to the interface’s outgoing 802.1Q and Q-in-Q packets.

    detail

    VLAN membership

    Names of VLANs that belong to this interface.

    none, brief, detail,

    Tag

    Number of the 802.1Q tag.

    none, brief, detail,

    Tagging

    Specifies whether the interface forwards 802.1Q tagged or untagged traffic.

    none, brief, detail,

    Blocking

    The forwarding state of the interface:

    • unblocked—Traffic is forwarded on the interface.
    • blocked—Traffic is not being forwarded on the interface.
    • Disabled by bpdu control—The interface is disabled due to receiving BPDUs on a protected interface. If the disable-timeout statement has been included in the BPDU configuration, the interface automatically returns to service after the timer expires.
    • blocked by RTG—The specified redundant trunk group is disabled.
    • blocked by STP—The interface is disabled due to a spanning-tree protocol error.
    • MAC limit exceeded—The interface is temporarily disabled due to a MAC limit error. The disabled interface is automatically restored to service when the disable timeout expires.
    • MAC move limit exceeded—The interface is temporarily disabled due to a MAC move limit error. The disabled interface is automatically restored to service when the disable timeout expires.
    • Storm control in effect—The interface is temporarily disabled due to a storm control error. The disabled interface is automatically restored to service when the disable timeout expires.

    none, brief, detail,

    Number of MACs learned on IFL

    Number of MAC addresses learned by this interface.

    detail

    mapping

    When mapping is configured, the status is one of the following C-VLAN to S-VLAN mapping types:

    • dot1q-tunneled—The interface maps all traffic to the S-VLAN (all-in-one bundling).
    • native—The interface maps untagged and priority tagged packets to the S-VLAN.
    • push—The interface maps packets to a firewall filter to an S-VLAN.
    • policy-mapped—The interface maps packets to a specifically defined S-VLAN.
    • integer—The interface maps packets to the specified S-VLAN.

    When mapping is not configured, this entry does not appear in the command output.

    detail

    Sample Output

    show ethernet-switching interfaces

    user@switch> show ethernet-switching interfaces 
    Interface    State  VLAN members        Tag   Tagging  Blocking 

ae0.0        up      default                   untagged unblocked
ge-0/0/2.0   up      vlan300            300    untagged blocked by RTG (rtggroup)
    ge-0/0/3.0   up      default                            blocked by STP      
    ge-0/0/4.0   down    default                            MAC limit exceeded
ge-0/0/5.0   down    default                            MAC move limit exceeded
ge-0/0/6.0   down    default                            Storm control in effect
ge-0/0/7.0   down    default                            unblocked
ge-0/0/13.0  up      default                   untagged unblocked
ge-0/0/14.0  up      vlan100             100   tagged   unblocked
                     vlan200             200   tagged   unblocked
ge-0/0/15.0  up      vlan100             100   tagged   blocked by STP
                     vlan200             200   tagged   blocked by STP
ge-0/0/16.0  down    default                   untagged unblocked
ge-0/0/17.0  down    vlan100             100   tagged   Disabled by bpdu-control
                     vlan200             200   tagged   Disabled by bpdu-control

    show ethernet-switching interfaces ge-0/0/15 brief

    user@switch> show ethernet-switching interfaces ge-0/0/15 brief

    Interface   State  VLAN members   Tag   Tagging        Blocking

ge-0/0/15.0  up     vlan100        100   tagged         blocked by STP
                    vlan200        200   tagged         blocked by STP

    show ethernet-switching interfaces ge-0/0/2 detail (Blocked by RTG rtggroup)

    user@switch> show ethernet-switching interfaces ge-0/0/2 detail 
    Interface: ge-0/0/2.0, Index: 65, State: up, Port mode: Access
Ether type for the interface: 0X8100
VLAN membership:
    vlan300, 802.1Q Tag: 300, untagged, msti-id: 0, blocked by RTG(rtggroup)
Number of MACs learned on IFL: 0

    show ethernet-switching interfaces ge-0/0/15 detail (Blocked by STP)

    user@switch> show ethernet-switching interfaces ge-0/0/15 detail 
    Interface: ge-0/0/15.0, Index: 70, State: up, Port mode: Trunk
Ether type for the interface: 0X8100
VLAN membership:
    vlan100, 802.1Q Tag: 100, tagged, msti-id: 0, blocked by STP
    vlan200, 802.1Q Tag: 200, tagged, msti-id: 0, blocked by STP

Number of MACs learned on IFL: 0

    show ethernet-switching interfaces ge-0/0/17 detail (Disabled by bpdu-control)

    user@switch> show ethernet-switching interfaces ge-0/0/17 detail 
    Interface: ge-0/0/17.0, Index: 71, State: down, Port mode: Trunk
Ether type for the interface: 0X8100
VLAN membership:
    vlan100, 802.1Q Tag: 100, tagged, msti-id: 1, Disabled by bpdu-control
    vlan200, 802.1Q Tag: 200, tagged, msti-id: 2, Disabled by bpdu-control
Number of MACs learned on IFL: 0

    show ethernet-switching interfaces detail (C-VLAN to S-VLAN Mapping)

    user@switch>show ethernet-switching interfaces ge-0/0/6.0 detail
    Interface: ge-0/0/6.0, Index: 73, State: up, Port mode: Access
Ether type for the interface: 0X8100
VLAN membership:
    map, 802.1Q Tag: 134, Mapped Tag: native, push, dot1q-tunneled, unblocked
    map, 802.1Q Tag: 134, Mapped Tag: 20, push, dot1q-tunneled, unblocked

    show ethernet-switching interfaces detail (Reflective Relay Is Configured)

    user@switch1> show ethernet-switching interfaces ge-7/0/2 detail
    Interface: ge-7/0/2, Index: 66, State: down, Port mode: Tagged-access
Ether type for the interface: 0X8100
Reflective Relay Status: Enabled
Ether type for the interface: 0x8100
VLAN membership:
    VLAN_Purple VLAN_Orange VLAN_Blue, 802.1Q Tag: 450, tagged, unblocked
    Number of MACs learned on IFL: 0

    Published: 2012-12-06

    Previous Page Next Page