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show ethernet-switching table

Syntax

show ethernet-switching table<brief | detail | extensive | summary><interface interface-name><management-vlan><persistent-mac <interface interface-name>><sort-by (name | tag)><vlan vlan-name>

Release Information

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

Options summary, management-vlan, and vlan vlan-name introduced in Junos OS Release 9.6 for EX Series switches.

Option sort-by and field name tag introduced in Junos OS Release 10.1 for EX Series switches.

Option persistent-mac introduced in Junos OS Release 11.4 for EX Series switches.

Description

Display the Ethernet switching table.

Options

none
—

(Optional) Display brief information about the Ethernet switching table.

brief | detail | extensive | summary
—

(Optional) Display the specified level of output.

interface interface-name
—

(Optional) Display the Ethernet switching table for a specific interface.

management-vlan
—

(Optional) Display the Ethernet switching table for a management VLAN.

persistent-mac <interface interface-name>
—

(Optional) Display the persistent MAC addresses learned for all interfaces or a specified interface. You can use this command to view entries that you want to clear for an interface that you intentionally disabled.

sort-by (name | tag)
—

(Optional) Display VLANs in ascending order of VLAN IDs or VLAN names.

vlan vlan-name
—

(Optional) Display the Ethernet switching table for a specific VLAN.

Required Privilege Level

view

 

Related Documentation

 

List of Sample Output

show ethernet-switching table
show ethernet-switching table brief
show ethernet-switching table detail
show ethernet-switching table extensive
show ethernet-switching table persistent-mac
show ethernet-switching table persistent-mac interface ge-0/0/16.0

Output Fields

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

Table 1: show ethernet-switching table Output Fields

Field Name

Field Description

Level of Output

VLAN

The name of a VLAN.

All levels

Tag

The VLAN ID tag name or number.

extensive

MAC or MAC address

The MAC address associated with the VLAN.

All levels

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.
  • persistent—The learned MAC addresses that will persist across restarts of the switch or interface-down events.

All levels except persistent-mac

Type

The type of MAC address. Values are:

  • installed—addresses that are in the Ethernet switching table.
  • uninstalled—addresses that could not be installed in the table or were uninstalled in an interface-down event and will be reinstalled in the table when the interface comes back up.

persistent-mac

Age

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

All levels

Interfaces

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

All levels

Learned

For learned entries, the time which the entry was added to the Ethernet switching table.

detail, extensive

Nexthop index

The next-hop index number.

detail, extensive

persistent-mac

installed indicates MAC addresses that are in the Ethernet switching table and uninstalled indicates MAC addresses that could not be installed in the table or were uninstalled in an interface-down event (and will be reinstalled in the table when the interface comes back up).

Sample Output

show ethernet-switching table

user@switch> show ethernet-switching table 
Ethernet-switching table: 57 entries, 15 learned, 2 persistent
  VLAN              MAC address       Type         Age Interfaces
  F2                *                 Flood          - All-members
  F2                00:00:05:00:00:03 Learn          0 ge-0/0/44.0
  F2                00:19:e2:50:7d:e0 Static         - Router
  Linux             *                 Flood          - All-members
  Linux             00:19:e2:50:7d:e0 Static         - Router
  Linux             00:30:48:90:54:89 Learn          0 ge-0/0/47.0
  T1                *                 Flood          - All-members
  T1                00:00:05:00:00:01 Persistent     0 ge-0/0/46.0
  T1                00:00:5e:00:01:00 Static         - Router
  T1                00:19:e2:50:63:e0 Persistent     0 ge-0/0/46.0
  T1                00:19:e2:50:7d:e0 Static         - Router
  T10               *                 Flood          - All-members
  T10               00:00:5e:00:01:09 Static         - Router
  T10               00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
  T10               00:19:e2:50:7d:e0 Static         - Router
  T111              *                 Flood          - All-members
  T111              00:19:e2:50:63:e0 Learn          0 ge-0/0/15.0
  T111              00:19:e2:50:7d:e0 Static         - Router
  T111              00:19:e2:50:ac:00 Learn          0 ge-0/0/15.0
  T2                *                 Flood          - All-members
  T2                00:00:5e:00:01:01 Static         - Router
  T2                00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
  T2                00:19:e2:50:7d:e0 Static         - Router
  T3                *                 Flood          - All-members
  T3                00:00:5e:00:01:02 Static         - Router
  T3                00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
  T3                00:19:e2:50:7d:e0 Static         - Router
  T4                *                 Flood          - All-members
  T4                00:00:5e:00:01:03 Static         - Router
  T4                00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
[output truncated]

show ethernet-switching table brief

user@switch> show ethernet-switching table brief
Ethernet-switching table: 57 entries, 15 learned, 2 persistent entries
  VLAN              MAC address       Type         Age Interfaces
  F2                *                 Flood          - All-members
  F2                00:00:05:00:00:03 Learn          0 ge-0/0/44.0
  F2                00:19:e2:50:7d:e0 Static         - Router
  Linux             *                 Flood          - All-members
  Linux             00:19:e2:50:7d:e0 Static         - Router
  Linux             00:30:48:90:54:89 Learn          0 ge-0/0/47.0
  T1                *                 Flood          - All-members
  T1                00:00:05:00:00:01 Persistent     0 ge-0/0/46.0
  T1                00:00:5e:00:01:00 Static         - Router
  T1                00:19:e2:50:63:e0 Persistent     0 ge-0/0/46.0
  T1                00:19:e2:50:7d:e0 Static         - Router
  T10               *                 Flood          - All-members
  T10               00:00:5e:00:01:09 Static         - Router
  T10               00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
  T10               00:19:e2:50:7d:e0 Static         - Router
  T111              *                 Flood          - All-members
  T111              00:19:e2:50:63:e0 Learn          0 ge-0/0/15.0
  T111              00:19:e2:50:7d:e0 Static         - Router
  T111              00:19:e2:50:ac:00 Learn          0 ge-0/0/15.0
  T2                *                 Flood          - All-members
  T2                00:00:5e:00:01:01 Static         - Router
  T2                00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
  T2                00:19:e2:50:7d:e0 Static         - Router
  T3                *                 Flood          - All-members
  T3                00:00:5e:00:01:02 Static         - Router
  T3                00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
  T3                00:19:e2:50:7d:e0 Static         - Router
  T4                *                 Flood          - All-members
  T4                00:00:5e:00:01:03 Static         - Router
  T4                00:19:e2:50:63:e0 Learn          0 ge-0/0/46.0
[output truncated]

show ethernet-switching table detail

user@switch> show ethernet-switching table detail
Ethernet-switching table: 5 entries, 2 learned entries
 VLAN: default, Tag: 0, MAC: *, Interface: All-members
  Interfaces:
   ge-0/0/11.0, ge-0/0/20.0, ge-0/0/30.0, ge-0/0/36.0, ge-0/0/3.0
  Type: Flood
  Nexthop index: 1307

 VLAN: default, Tag: 0, MAC: 00:1f:12:30:b8:83, Interface: ge-0/0/3.0
   Type: Learn, Age: 0, Learned: 20:09:26
   Nexthop index: 1315

 VLAN: v1, Tag: 101, MAC: *, Interface: All-members
  Interfaces:
   ge-0/0/31.0
  Type: Flood
  Nexthop index: 1313

 VLAN: v1, Tag: 101, MAC: 00:1f:12:30:b8:89, Interface: ge-0/0/31.0
  Type: Learn, Age: 0, Learned: 20:09:25
  Nexthop index: 1312

 VLAN: v2, Tag: 102, MAC: *, Interface: All-members
  Interfaces:                         
   ae0.0
  Type: Flood
  Nexthop index: 1317

show ethernet-switching table extensive

user@switch> show ethernet-switching table extensive
Ethernet-switching table: 3 entries, 1 learned, 5 persistent entries 

    VLAN: v1, Tag: 10, MAC: *, Interface: All-members
    Interfaces:
                ge-0/0/14.0, ge-0/0/1.0, ge-0/0/2.0, ge-0/0/3.0, ge-0/0/4.0,
                ge-0/0/5.0, ge-0/0/6.0, ge-0/0/7.0, ge-0/0/8.0, ge-0/0/10.0,
                ge-0/0/0.0
    Type: Flood
    Nexthop index: 567

    VLAN: v1, Tag: 10, MAC: 00:21:59:c6:93:22, Interface: Router
    Type: Static
    Nexthop index: 0

    VLAN: v1, Tag: 10, MAC: 00:21:59:c9:9a:4e, Interface: ge-0/0/14.0
    Type: Learn, Age: 0, Learned: 18:40:50
    Nexthop index: 564

show ethernet-switching table persistent-mac

user@switch> show ethernet-switching table persistent-mac 
VLAN              MAC address       Type       Interface
default           00:10:94:00:00:02 installed    ge-0/0/42.0
default           00:10:94:00:00:03 installed    ge-0/0/42.0
default           00:10:94:00:00:04 installed    ge-0/0/42.0
default           00:10:94:00:00:05 installed    ge-0/0/42.0
default           00:10:94:00:00:06 installed    ge-0/0/42.0
default           00:10:94:00:05:02 uninstalled ge-0/0/16.0
default           00:10:94:00:06:03 uninstalled ge-0/0/16.0
default           00:10:94:00:07:04 uninstalled ge-0/0/16.0

show ethernet-switching table persistent-mac interface ge-0/0/16.0

VLAN              MAC address       Type       Interface
default           00:10:94:00:05:02 uninstalled ge-0/0/16.0
default           00:10:94:00:06:03 uninstalled ge-0/0/16.0
default           00:10:94:00:07:04 uninstalled ge-0/0/16.0

Published: 2012-12-07

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