H3C Technologies H3C S9500E Series Switches - Manual (Page 127)

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LED Status Description
ACT/ALM
(Ringlet 0)
Steady red At least one alarm is present.
Steady green
The interface is up, and data is being transmitted and received
normally on the interface.
Off The interface is down.
MATESYNC
(Ringlet 0)
Steady on
The local Mate interface is synchronous with the peer Mate
interface.
Off
The local Mate interface is not synchronous with the peer Mate
interface.
ACT/ALM
(Ringlet 1)
Steady red At least one alarm is present.
Steady green
The interface is up, and data is being transmitted and received
normally on the interface.
Off The interface is down.
MATESYNC
(Ringlet 1)
Steady on
The local Mate interface is synchronous with the peer Mate
interface.
Off
The local Mate interface is not synchronous with the peer Mate
interface.