show interfaces mac-database (Gigabit Ethernet)
Syntax
Release Information
Command introduced before Junos OS Release 7.4.
Description
(M Series, T Series, and MX Series routers only) Display media access control (MAC) address information for the specified Gigabit Ethernet interface.
Options
- ge-fpc/pic/port
Display MAC addresses that have been learned on all logical interfaces on a particular physical interface.
- ge-fpc/pic/port.n
Display MAC addresses that have been learned on a particular logical interface.
- mac-address mac-address
(Optional) Display detailed MAC address statistics, including policer information.
Additional Information
On IQ2 PIC interfaces, the default value for maximum retention of entries in the MAC address table has changed, for cases in which the table is not full. The new holding time is 12 hours. The previous retention time of 3 minutes is still in effect when the table is full.
Required Privilege Level
view
List of Sample Output
show interfaces mac-database (All MAC Addresses on a Port)show interfaces mac-database (All MAC Addresses on a Service)
show interfaces mac-database mac-address
Output Fields
Table 1 lists the output fields for the show interfaces mac-database command. Output fields are listed in the approximate order in which they appear.
Table 1: show interfaces mac-database Output Fields
Field Name | Field Description |
|---|---|
| Physical Interface | |
Physical interface | Name of the physical interface. |
Enabled | State of the physical interface. Possible values are described in the “Enabled Field” section under Common Output Fields Description. |
Interface index | Physical interface index number, which reflects its initialization sequence. |
SNMP ifIndex | SNMP index number for the physical interface. |
Description | Description and name of the interface. |
Link-level type | Encapsulation being used on the physical interface. |
MTU | MTU size on the physical interface. |
Speed | Speed at which the interface is running. |
Loopback | Whether loopback is enabled and the type of loopback: local or remote. |
Source filtering | Whether source filtering is configured. |
Flow control | Whether flow control is enabled or disabled. |
Device flags | Information about the physical device. Possible values are described in the “Device Flags” section under Common Output Fields Description. |
Interface flags | Information about the interface. Possible values are described in the “Links Flags” section under Common Output Fields Description. |
Link flags | Information about the link. Possible values are described in the “Device Flags” section under Common Output Fields Description. |
| Logical Interface | |
Logical interface | Name of the logical interface. |
Index | Logical interface index number, which reflects its initialization sequence. |
SNMP ifIndex | Logical interface SNMP interface index number. |
Flags | Information about the logical interface (possible values are described in the “Logical Interface Flags” section under Common Output Fields Description. |
Encapsulation | Encapsulation on the logical interface. |
MAC address, Input frames, Input bytes, Output frames, Output bytes | MAC address and corresponding number of input frames, input bytes, output frames, and output bytes. |
Number of MAC addresses | Number of MAC addresses configured. |
Policer Statistics | (Displayed for mac-address option only) Display information about policers applied to a logical interface-MAC pair.
|
Sample Output
show interfaces mac-database (All MAC Addresses on a Port)
user@host> show interfaces mac-database ge-5/0/1 Physical interface: ge-5/0/1, Enabled, Physical link is Down
Interface index: 161, SNMP ifIndex: 59
Description: horseshoe ge-2/2/1
Link-level type: Ethernet, MTU: 1514, Speed: 1000mbps, Loopback: Disabled, Source filtering: Disabled,
Flow control: Enabled
Device flags : Present Running Down
Interface flags: Hardware-Down SNMP-Traps 16384
Link flags : None
Logical interface ge-5/0/1.0 (Index 68) (SNMP ifIndex 67)
Flags: Device-Down SNMP-Traps Encapsulation: ENET2
MAC address Input frames Input bytes Output frames Output bytes
00:00:20:00:00:01 0 0 0 0
00:00:20:00:00:02 0 0 0 0
00:00:20:00:00:03 0 0 0 0
00:00:20:00:00:05 0 0 0 0
Number of MAC addresses : 4
show interfaces mac-database (All MAC Addresses on a Service)
user@host> show interfaces mac-database ge-5/0/1.0 Logical interface ge-5/0/1.0 (Index 68) (SNMP ifIndex 67)
Flags: Device-Down SNMP-Traps Encapsulation: ENET2
MAC address Input frames Input bytes Output frames Output bytes
00:00:20:00:00:01 0 0 0 0
00:00:20:00:00:02 0 0 0 0
00:00:20:00:00:03 0 0 0 0
00:00:20:00:00:05 0 0 0 0
show interfaces mac-database mac-address
user@host> show interfaces mac-database ge-1/2/0
mac-address aa:bb:cc:dd:e0:00 Physical interface: ge-1/2/0, Enabled, Physical link is Up
Interface index: 142, SNMP ifIndex: 32
Link-level type: Ethernet, MTU: 1514, Speed: 1000mbps, Loopback: Disabled,
Source filtering: Disabled, Flow control: Enabled
Device flags : Present Running
Interface flags: SNMP-Traps 16384
Link flags : None
Logical interface ge-1/2/0.0 (Index 68) (SNMP ifIndex 56)
Flags: SNMP-Traps 16384 Encapsulation: ENET2
MAC address: aa:bb:cc:dd:e0:00, Type: Configured,
Input bytes : 0
Output bytes : 0
Input frames : 0
Output frames : 0
Policer statistics:
Policer type Discarded frames Discarded bytes
Input aggregate 0 0
Output aggregate 0 0
