SDH ASON Trail

The window is divided into four portions: Query ASON Trail on the top, the ASON trail list in the middle, cross-connection information in the lower portion, and a button area. In this window the user can query ASON trail information from single NEs.

Navigation Path

In the NE Explorer, click the NE and select ASON > SDH ASON Trail from the Function Tree.

Parameters

Field	Value	Description
Query ASON Trail	With this node as source. With this node as the intermediate node. With this node as sink. Passing through this node. Default: Passing through this node.	Queries the desired ASON trails in one of the four ways.
Name	For example, NE11-NE12-VC4 server trail-0001	Displays the name of an ASON trail.
Source (Sink) NE	For example, NE11	Displays the name of the source or sink NE.
Source (Sink) Port	For example, 1-JL64-1(SDH-1)	Displays the source or sink port of an ASON trail.
Source (Sink) Timeslot	Non-concatenation service: VC4:x. For example, VC4:1 Concatenation service: VC4:m-n. For example, VC4:5-8	Displays the source or sink timeslot that an ASON trail uses.
Index	For example, 4	Displays the index number of the ASON trails.
Type	ASON Trail, ASON Server Trail, Differentially Protected ASON Trail, Differentially Protected ASON Server Trail	Displays the type of an ASON trail.
Class	Diamond, Gold, Silver, Copper, Iron	Displays the protection type of the ASON trail. There are five types of ASON trails: diamond, gold, silver, copper and iron. There are three types of ASON server trails: diamond, gold, silver and copper. A diamond service is a service provided with 1+1 protection from its source node to its sink node. It is also called 1+1 service. A gold service is also called a 1:1 service. When a fiber on the path of a gold service is cut, the ASON provides MSP for the service at first. If MSP fails, the ASON reroutes the gold service. A silver service is also called a rerouting service. When an ASON trail is interrupted, periodic rerouting is performed until the rerouting succeeds. During this process, if the original route is recovered, rerouting stops. A copper service is also called an unprotected service. If its trail fails, service is interrupted and there is no rerouting. An iron service can be preempted by a higher class service. For example, the extra service is created by using the protection MSP link of a gold service.
Direction	Bidirectional	Bidirectional means both the source and the sink can transmit and receive services. Unidirectional means the source transmits services and the sink receives services. At present, the ASON supports bidirectional only.
Bandwidth Granularity	VC4	Displays the bandwidth granularity of an ASON trail. Only VC4 is supported.
Service Status	Primary, Secondary	Displays whether the ASON trail is the primary or the secondary one.
Concatenation Type	Non-Concatenation, Standard Concatenation	Displays the concatenation type of an ASON trail.
Concatenation Count	4, 16, 64	If Concatenation Type is Standard Concatenation, Concatenation Count is countable. If Non-Concatenation, Concatenation Count is null.
Created On	For example, 05/09/2008 11:18:15	Displays the time when the ASON trail was created.
Reroute Lockout	Locked, Unlocked	Specifies whether the ASON trail is rerouting locked. If locked, the trail is not rerouted if it is interrupted.
Rerouting Priority	High, Low, Low and Delayed	Displays the rerouting priority of an ASON trail. Compared with low priority services, high priority services first obtain the link resources during the rerouting.
Revertive Mode	Non-Revertive, Automatically Revertive, Scheduled Revertive	Displays the revertive attribute of a trail during rerouting. It indicates whether a trail can automatically revert to the original route that has been restored after service rerouting.
Source (Sink) Node	For example, 1.1.1.11	Displays the source or sink node ID.
Level	For example, VC4	Displays the level of cross-connections of the selected ASON trail.
Type	Normal, SNC	For normal ASON services, the value is Normal. For diamond services, the value is Normal or SNC.
Source (Sink) Board	For example, 21-JL64-1(SDH-1)	Displays the source or sink board for cross-connections.
Source (Sink) Timeslot/Path	Path: Timeslot For example, VC4:1	Displays the path and timeslot that the source or sink port uses.
Working/Protection	Working, Protection	Displays whether the cross-connection is in the working or protection state.
Setting	See the following sample value. The selected column's width: 75 Pixels The selected column's name: Source	Allows the user to set trail list fields. The user can specify what fields to display and in what order the fields are displayed. The user can also set the width for a selected column.