129• When activating rings in a ring group, activate them on the edge node first and then on theassistant-edge node.• When deactivating rings in a ring group, deactivate them on the assistant-edge node first and thenon the edge node.Failure to follow these guidelines can cause the failure of assistant-edge node to receive Edge-Hellopackets and mistakenly considering the primary ring as failed.Related commands: rrpp ring-group and display rrpp ring-group.Examples# Configure subrings for RRPP ring group 1. system-view[Sysname] rrpp ring-group 1[Sysname-rrpp-ring-group1] domain 1 ring 1 to 3 5[Sysname-rrpp-ring-group1] domain 2 ring 1 to 3 5fast-detection enableSyntaxfast-detection enableundo fast-detection enableViewRRPP domain viewDefault level2: System levelParametersNoneDescriptionUse fast-detection enable to enable fast detection for the RRPP domain.Use undo fast-detection enable to disable fast detection for the RRPP domain.By default, fast detection is disabled for an RRPP domain.To make fast detection take effect in an RRPP domain, you must enable fast detection, the RRPP protocol,and the RRPP rings in the RRPP domain.When configuring fast detection in an RRPP domain, enable fast detection first on the edge node, andthen on the assistant-edge node. Otherwise, the assistant-edge node might fail to receive Fast-Edge-Hellopackets and erroneously conclude that the master node is faulty.Related commands: ring enable and rrpp enable.Examples# Enable fast detection in RRPP domain 1. system-view[Sysname] rrpp domain 1[Sysname-rrpp-domain1] fast-detection enable
