Linear MS

In this user interface, you can configure 1+1 or 1:N linear multiplex section protection (MSP) station by station.

Navigation Path

In the NE Explorer, select an NE and choose Configuration > Linear MS from the Function Tree.

Buttons

Button		Description
Start Protocol		Starts the automatic protection switching (APS) protocol.
Stop Protocol		Stops the APS protocol.
Query	Query Protection Group	Queries the switching status and protocol status of protection groups from the NE.
Query	Query Switching Status	Queries the switching status of the protection group from the NE.

Shortcut Menu Items

Item	Description
Query	Queries the switching status of Linear MS.
Clear	Clears the switching status of Linear MS.
Lockout of Protection	The switching request for the Linear MS is denied, but the reversion of the switching is allowed. NOTICE: When the switching operation are performed, the services may be interrupted.
Forced Switching to Protection	Switches a Linear MS forcibly, regardless of the status of the Linear MS. NOTICE: When the switching operation are performed, the services may be interrupted.
Forced Switching to Working Channels	Forces the service to switch from the protection channel to the working channel. This switching neglects the status of the working channel, unless the working channel is satisfying a bridge request of higher priority. NOTICE: When the switching operation are performed, the services may be interrupted.
Manual Switching to Protection	Performs manual switching from the working channel to the protection channel. If the protection channel is normal, the switching takes place. If the protection channel fails or must meet a switching request of higher priority, the switching does not occur. NOTICE: When the switching operation are performed, the services may be interrupted.
Manual Switching to Working Channels	Performs a manual switching from the protection channel to the working channel. If the working channel is normal, the switching takes place. If the working channel fails or is satisfying a switching of higher priority, the switching does not take place. NOTICE: When the switching operation are performed, the services may be interrupted.
Exercise	Simulates the switching operation. It is not a real switching. This function tests the function of the protection group and does not interrupt services.

Parameters

Field	Value	Description
Protection Group ID	Example: 1	The ID of the Linear MS protection group.
Protection Group Type	1+1 Protection, 1:N Protection	The protection type of a linear MSP group.
Switching Mode	Single-Ended Switching, Dual-Ended Switching	The switching mode of a linear MSP group.
Revertive Mode	Non-Revertive, Revertive	Sets whether the services protected automatically switches back to the working channel after the working channel recovers.
WTR Time (s)	Example: 300	The WTR time of a linear MSP group.
SD Switching	Enabled, Disabled	Whether to enable SD to serve as the MSP switching condition.
Protocol Type	New Protocol, Restructure Protocol Default: New Protocol	The type of MSP protocol. New Protocol: The protocol that is previously supported and is applicable to new equipment. Currently it is a widely used protocol. Restructure Protocol: Optimized based on the new protocol and provides better protocol protection measures to make the protocol stabler. A combination of the new protocol and the restructure protocol leads to an NE interconnection failure. Hence, ensure the same protocol type is used by the interconnected NEs.
Protocol Status	Unknown, Already Started, Being Started, Unstarted	Displays the status of MS protocol.
Protection Channel Detection	Disabled, Enabled Default: Disabled	Enables or disables the protection channel detection function of the liner MSP.
Protection Subnet	Example: 1+1_MSP_1	Indicates the protection subnet to which the linear MS belongs.
SD/SF PRI Switching Tag	High priority, Low priority	The priority of the SD/SF as a switching condition.
Switching Mode Indication	Indicated, Not indicated	Whether the switching mode is indicated.
Unit Type	Working Unit, Protection Unit	Protection unit or working unit.
Unit Name - West	Equipment that supports the master and slave shelf management: shelf ID(shelf name)-slot number-board name-port number(port name) Equipment that does not support the master and slave shelf management: slot number-board name-port number(port name)	West protection unit and west working unit of a linear MS protection group.
Switching Status - West	Unknown, Force to Standby, Manual to Standby, Exercise, Switch upon signal degradation, Switch upon signal failure, Lockout, Non-Revertive Request, Force to Active, Manual to Active, Signal Fail-Protection, Signal Degrade-Protection, Wait-To-Restore, Wait-To-Switch, Idle, Switching, Not Locked out, Non-Revertive Switching	The switching status of the west line.
Protected Unit	Equipment that supports the master and slave shelf management: shelf ID(shelf name)-slot number-board name-port number(port name) Equipment that does not support the master and slave shelf management: slot number-board name-port number(port name)	Displays the board that is under protection.
Remote End/Local End	Remote, Local	When the protection group is in Dual-Ended Switching mode, displays whether the switching request is from the remote end or the local end.
Hold Off Time (100ms)	0 to 100	Sets the hold-off time of the linear MSP switch.

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