ethernet loopback (VLAN-aware)
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- Last UpdatedAug 13, 2021
- 2 minutes read
Configures the Ethernet loopback functionality on one or a set of ports in a specific VLAN (VLAN-aware mode).
Ethernet loopback is not enabled on any port in a VLAN.
ethernet
| Specifies the Ethernet interface.
|
to
| Configures the range of ports.
|
unit/slot/port
| Specifies the interface details. |
lag
lag-id
| Specifies the LAG virtual interface.
|
VLAN configuration mode
The Ethernet loopback functionality on a port in the VLAN-aware mode can be configured either as flow-aware or flow-unaware. The ports on which Ethernet loopback is being enabled must be explicitly assigned as a member of the VLAN.
To enable Ethernet loopback on a port in the VLAN-aware mode as flow-aware, the ethernet loopback test-mac command must be executed for the specific port from the interface mode before enabling Ethernet loopback. The ethernet loopback test-mac command is mandatory on ICX 7750, ICX 7450 and ICX 7250 devices. To enable Ethernet loopback on these devices, you must first configure the ethernet loopback test-mac command. In other supported platforms, the ethernet loopback test-mac command is optional to enable Ethernet loopback.
A port cannot be configured as VLAN-aware and VLAN-unaware simultaneously, and the flow configuration must be either flow-aware or flow-unaware.
The ethernet loopback command in VLAN-aware mode is not supported on VLAN Group, VLAN Range, or mult-range VLAN (MVLAN) mode.
The ethernet loopback command VLAN-aware mode cannot be configured on a set of VLANs that share a Layer 2 topology (Topology Group).
The no form of the command disables Ethernet loopback from the ports of the specified VLAN.
The following example configures Ethernet loopback in VLAN-aware mode as flow-aware.
device(config)# interface ethernet 1/1/1
device(config-if-e1000-1/1/1)# ethernet loopback test-mac 1111.2222.3333 4444.5555.5555
device(config-if-e1000-1/1/1)# exit
device(config)# vlan 100
device(config-vlan-100)# ethernet loopback ethernet 1/1/1 to 1/1/10
The following example configures Ethernet loopback on a port in VLAN-aware mode as flow-unaware.
device(config)# vlan 100
device(config-vlan-100)# ethernet loopback ethernet 1/1/1
The following example configures Ethernet loopback on a range of ports in VLAN-aware mode as flow-unaware.
device(config)# vlan 100
device(config-vlan-100)# ethernet loopback ethernet 1/1/1 to 1/1/10
The following example configures Ethernet loopback on two separate ports in VLAN-aware mode as flow-unaware.
device(config)# vlan 100
device(config-vlan-100)# ethernet loopback ethernet 1/1/1 ethernet 1/2/3
| Release version | Command history |
|---|---|
| 08.0.30 | This command was introduced. |
| 08.0.61 | This command was modified to add lag lag-id options. |