ECS4100 Series CLI Reference Guide-R07

Chapter 24 | ERPS Commands
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propagate-tc This command enables propagation of topology change messages for a secondary
ring to the primary ring. Use the no form to disable this feature.
Syntax
[no] propagate-tc
Default Setting
Disabled
Command Mode
ERPS Instance Configuration
Command Usage
◆ When a secondary ring detects a topology change, it can pass a message about
this event to the major ring. When the major ring receives this kind of message
from a secondary ring, it can clear the MAC addresses on its ring ports to help
the secondary ring restore its connections more quickly through protection
switching.
◆ When the MAC addresses are cleared, data traffic may flood onto the major
ring. The data traffic will become stable after the MAC addresses are learned
again. The major ring will not be broken, but the bandwidth of data traffic on
the major ring may suffer for a short period of time due to this flooding
behavior.
Example
Console(config-erps-inst)#propagate-tc
Console(config-erps-inst)#
non-revertive This command enables non-revertive mode, which requires the protection state on
the RPL to manually cleared. Use the no form to restore the default revertive mode.
Syntax
[no] non-revertive
Default Setting
Disabled
Command Mode
ERPS Instance Configuration
Command Usage
◆ Revertive behavior allows the switch to automatically return the RPL from
Protection state to Idle state through the exchange of protocol messages.