(Optional) Setting OAM PDU Parameters
You can set the maximum OAM PDU size, interval at which OAM PDUs are sent, and interval at which OAM PDUs are received to effectively control OAM PDU transmission.
Context
EFM devices exchange OAM PDUs periodically to report the link status. You can set OAM PDU parameters to effectively manage networks.
After the maximum OAM PDU size is set on an interface, the interface discards packets whose sizes are greater than the maximum OAM PDU size. You can also change the maximum OAM PDU size to implement interworking between Huawei and non-Huawei devices.
After setting up an EFM connection, two EFM devices exchange OAM PDUs at a specific interval to check whether the connection is working properly. If an EFM device does not receive any OAM PDU from its remote EFM device within the interval at which OAM PDUs are received, it considers that the link is not working properly. You can configure different intervals at which OAM PDUs are received for different user requirements. A short interval can be set for high-priority users or services sensitive to link quality. A long interval can be set for low-priority users or services insensitive to link quality.
Perform the following steps on the interfaces at both ends of a link:
Procedure
- Set the maximum OAM PDU size.
Run system-view
The system view is displayed.
Run interface interface-type interface-number
The view of the interface at one end of a link is displayed.
Run efm packet max-size size
The maximum OAM PDU size is set.
If the maximum OAM PDU sizes set on the interfaces at both ends of a link are different, the interfaces negotiate the maximum OAM PDU size in the discovery phase. A smaller value between the maximum OAM PDU sizes at both ends is used.
Run commit
The configuration is committed.
- Set the interval at which OAM PDUs are sent.
Run system-view
The system view is displayed.
Run interface interface-type interface-number
The view of the interface at one end of a link is displayed.
Run efm interval period-value
The interval at which OAM PDUs are sent is set.
You must set the same interval at which OAM PDUs are sent on the interfaces at both ends of a link. If you set different intervals at both ends, session negotiation fails or session flapping occurs.
The interval at which OAM PDUs are sent must be set for an interface only when EFM OAM has been globally enabled and EFM OAM has not been enabled on the interface.
Run commit
The configuration is committed.
- Set the interval at which OAM PDUs are received.
Run system-view
The system view is displayed.
Run interface interface-type interface-number
The view of the interface at one end of a link is displayed.
Run efm timeout period-value
The interval at which OAM PDUs are received is set.
You must set the same interval at which OAM PDUs are received on the interfaces at both ends of a link. If you set different intervals at both ends, session negotiation fails or session flapping occurs.
The interval at which OAM PDUs are received must be set for an interface only when EFM OAM has been globally enabled and EFM OAM has not been enabled on the interface.
Run commit
The configuration is committed.