show ethernet-switching interfaces

Syntax


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

Release Information

Command introduced in JUNOS Release 9.0 for EX Series switches.

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

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

Description

Display information about switched Ethernet interfaces.

Options

none — (Optional) 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

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)

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.	All levels
State	Interface state. Values are up and down.	none, brief, detail, summary
VLAN members	Name of a VLAN.	none, brief, detail, summary
Tag	Number of the 802.1Q-tag.	All levels
Tagging	Specifies whether the interface forwards 802.1Q-tagged or untagged traffic.	All levels
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 limiting 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 limiting 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, summary
Index	The VLAN index internal to JUNOS Software.	detail
mapping	The C-VLAN to S-VLAN mapping information: 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.	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
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
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
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
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