dritrail creation procedure[1]

8/4/2019 DRItrail Creation Procedure[1]

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Agenda

What is DRI.

What are the advantage when using DRI.

How to create DRI trail step after step.

Hands on training.


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What is DRI ?

Dual Ring Interworking (DRI)

User-assisted DRI

Automatic DRI


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The advantage of using DRI


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One fiber cut.

Switch to protection path.


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Two fiber cuts

TRAFFICAFFECTING!!!!!


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So,what can we do ?

Add links:

TRAFFIC WORKS!!!


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Even if we have more fiber cut:

Even with 3 fiber cuts the traffic works!!!


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DRI

In order to use it we need to create path from the mainTo the protection andvice versa.

The step for creating DRI trail:

1. choose current&underline in the protection filed

2. Sign V the create trail window DRI.

3.define the main and the protection path.

4.define the first link for the bridge.

5.in the segment window- go to the main and find the linkwhich you already defined for the bridges.

6.right click and choose DRI bridge.

7.select the first End Point and its link.

8.select the secondEnd Point and its link.


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DRI - Example

Path from the main to the protection


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Step A:Define the protection

criteria and protection type:


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Step B:Define the main and the

protection path:

A

B

CD

E

G

H

I

JK

L

M

R

W

S


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Step C:Define the first link for the

main path:

A

B

CD

E

G

H

I

JK

L

M

R

W

S


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Selection of the bridge:

Note: The direction of this link is veryimportant,

it should be from the main to the

protection.

D

R

D RLinkName

STName

In this case we need the direction

From D to R.

Select Segment

The Same action should be done for the rest of the

required bridges.

STName


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Step D: Select ST for the bridges:

Afterdefining the first link of the bridge, go the trail path

List (in the bottom of the left side) and choose the first bridge.

Press right click and select DRI bridge:

Note: before

Defining theBridge, the EP

Must be selected.


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Step E: Define the DRI bridge.

Now you need to match between the server trail and

the source end point.

For each bridge we need to match the first end point to one server

Trail an

dthe secon

dend

point to the other!!!!!


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After you define which resources will be used for the bridges

You will see a small blue sign near the resource, in the trail path, inside the tree view:

This sign shows us that this server in part of bridge.


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After finishing the definition of the first

part of each bridge, we can complete

the trail, and is the result is successfullycompleted we can activate it.

Note: because of the using of the Path Finder DRI completing can be

little longer comparing 1+1 protected trail.

Step F: Complete and activate.


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The result of the complete:

A

B

CD

E

G

H

I

JK

L

M

R

W

S


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Common problems and solutions:

In case the trail is failed to complete:

Cross bridge path: Define the DRI bridge

again, you probably had a mistake in the

bridge definition.

In case the trail cant find bridge: check

the resource trough the server.

Remember that a bridge need 2 TU12 foractivate.


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Thanks

dritrail creation procedure[1]

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