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show ethernet-switching table

Syntax

Release Information

Command introduced in Junos OS Release 12.3R2.

Command introduced in Junos OS Release 12.3R2 for EX Series switches.

Description

(MX Series routers and EX Series switches only) Display Layer 2 MAC address information.

Options

none

—

Display all learned Layer 2 MAC address information.

brief | count | detail | extensive

—

(Optional) Display the specified level of output.

address

—

(Optional) Display the specified learned Layer 2 MAC address information.

instance instance-name

—

(Optional) Display learned Layer 2 MAC addresses for the specified routing instance.

interface interface-name

—

(Optional) Display learned Layer 2 MAC addresses for the specified interface.

isid isid

—

(Optional) Display learned Layer 2 MAC addresses for the specified ISID.

logical-system logical-system-name

—

(Optional) Display Ethernet-switching statistics information for the specified logical system.

vlan-id (all-vlan | vlan-id)

—

(Optional) Display learned Layer 2 MAC addresses for all VLANs or for the specified VLAN.

vlan-name (all | vlan-name)

—

(Optional) Display learned Layer 2 MAC addresses for all VLANs or for the specified VLAN.

Additional Information

When Layer 2 protocol tunneling is enabled, the tunneling MAC address 01:00:0c:cd:cd:d0 is installed in the MAC table. When the Cisco Discovery Protocol (CDP), Spanning Tree Protocol (STP), or VLAN Trunk Protocol (VTP) is configured for Layer 2 protocol tunneling on an interface, the corresponding protocol MAC address is installed in the MAC table.

Required Privilege Level

view

List of Sample Output

show ethernet-switching table
show ethernet-switching table brief
show ethernet-switching table count
show ethernet-switching table extensive

Output Fields

Table 1 describes 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
Routing instance	Name of the routing instance.
VLAN name	Name of the VLAN.
MAC address	MAC address or addresses learned on a logical interface.
MAC flags	Status of MAC address learning properties for each interface: S—Static MAC address is configured. D—Dynamic MAC address is configured. L—Locally learned MAC address is configured. SE—MAC accounting is enabled. NM—Non-configured MAC. R—Locally learned MAC address is configured.
Logical interface	Name of the logical interface.
MAC count	Number of MAC addresses learned on the specific routing instance or interface.
Learning interface	Name of the logical interface on which the MAC address was learned.
Learning VLAN	VLAN ID of the routing instance or VLAN in which the MAC address was learned.
Layer 2 flags	Debugging flags signifying that the MAC address is present in various lists.
Epoch	Spanning-tree-protocolepoch number identifying when the MAC address was learned. Used for debugging.
Sequence number	Sequence number assigned to this MAC address. Used for debugging.
Learning mask	Mask of the Packet Forwarding Engines where this MAC address was learned. Used for debugging.
IPC generation	Creation time of the logical interface when this MAC address was learned. Used for debugging.

Sample Output

show ethernet-switching table

user@host> show ethernet-switching table

MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN101             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN102             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN103             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN104             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1101            00:1f:12:32:f5:c1   D             -   ae0.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1102            00:1f:12:32:f5:c1   D             -   ae0.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1103            00:1f:12:32:f5:c1   D             -   ae0.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1104            00:1f:12:32:f5:c1   D             -   ae0.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1105            00:1f:12:32:f5:c1   D             -   ae0.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1106            00:1f:12:32:f5:c1   D             -   ae0.0
[...output truncated...]

show ethernet-switching table brief

user@host> show ethernet-switching table brief

MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN101             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN102             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN103             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN104             88:e0:f3:bb:07:f0   D             -   ae20.0


MAC flags (S - static MAC, D - dynamic MAC, L - locally learned
           SE - statistics enabled, NM - non configured MAC, R - remote PE MAC)

Routing instance : default-switch
    Vlan                MAC                 MAC         Age    Logical
    name                address             flags              interface
    VLAN1101            00:1f:12:32:f5:c1   D             -   ae0.0
[...output truncated...]

show ethernet-switching table count

user@host> show ethernet-switching table count

0 MAC address learned in routing instance default-switch VLAN VLAN1000
ae26.0:1000

1 MAC address learned in routing instance default-switch VLAN VLAN101
ae20.0:101

  MAC address count per learn VLAN within routing instance:
    Learn VLAN ID      MAC count      Static MAC count
           101              1                 0

1 MAC address learned in routing instance default-switch VLAN VLAN102
ae20.0:102

  MAC address count per learn VLAN within routing instance:
    Learn VLAN ID      MAC count      Static MAC count
           102              1                 0

1 MAC address learned in routing instance default-switch VLAN VLAN103
ae20.0:103

  MAC address count per learn VLAN within routing instance:
    Learn VLAN ID      MAC count      Static MAC count
           103              1                 0

1 MAC address learned in routing instance default-switch VLAN VLAN104
ae20.0:104

  MAC address count per learn VLAN within routing instance:
    Learn VLAN ID      MAC count      Static MAC count
           104              1                 0

0 MAC address learned in routing instance default-switch VLAN VLAN105
ae20.0:105

0 MAC address learned in routing instance default-switch VLAN VLAN106
ae20.0:106

0 MAC address learned in routing instance default-switch VLAN VLAN107
ae20.0:107

0 MAC address learned in routing instance default-switch VLAN VLAN108
ae20.0:108

0 MAC address learned in routing instance default-switch VLAN VLAN109
ae20.0:109

0 MAC address learned in routing instance default-switch VLAN VLAN110
ae20.0:110

1 MAC address learned in routing instance default-switch VLAN VLAN1101
ae0.0:1101

  MAC address count per learn VLAN within routing instance:
    Learn VLAN ID      MAC count      Static MAC count
          1101              1                 0

1 MAC address learned in routing instance default-switch VLAN VLAN1102
ae0.0:1102

  MAC address count per learn VLAN within routing instance:
    Learn VLAN ID      MAC count      Static MAC count
          1102              1                 0
[...output truncated...]

show ethernet-switching table extensive

user@host> show ethernet-switching table extensive

MAC address: 88:e0:f3:bb:07:f0
  Routing instance: default-switch
VLAN ID: 101
   Learning interface: ae20.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 88:e0:f3:bb:07:f0
  Routing instance: default-switch
VLAN ID: 102
   Learning interface: ae20.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 88:e0:f3:bb:07:f0
  Routing instance: default-switch
VLAN ID: 103
   Learning interface: ae20.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 88:e0:f3:bb:07:f0
  Routing instance: default-switch
VLAN ID: 104
   Learning interface: ae20.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 00:1f:12:32:f5:c1
  Routing instance: default-switch
VLAN ID: 1101
   Learning interface: ae0.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 00:1f:12:32:f5:c1
  Routing instance: default-switch
VLAN ID: 1102
   Learning interface: ae0.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 00:1f:12:32:f5:c1
  Routing instance: default-switch
VLAN ID: 1103
   Learning interface: ae0.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008

MAC address: 00:1f:12:32:f5:c1
  Routing instance: default-switch
VLAN ID: 1104
   Learning interface: ae0.0
   Layer 2 flags: in_hash,in_ifd,in_ifl,in_vlan,in_rtt,kernel,in_ifbd
   Epoch: 0                            Sequence number: 2
   Learning mask: 0x00000008