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Add a Link


To add a link in the topology map:

  1. Click Network > Topology.

    The Topology page is displayed with the topology map at the center and the network information table at the bottom of the page.

  2. On the Link tab, click the add (+) icon.

    The Add Link page appears.

  3. Configure the link fields as per the Table 1.Note

    Fields marked with asterisk (*) are mandatory.

  4. Click Add.

    A confirmation message appears stating that the request is successfully submitted. The new link is displayed under the Link tab.

Table 1: Fields on the Add Link Page





Enter a name for the link.

Node A

Click the Node A list and select the name of the ingress (source) node from the list.

Node Z

Click the Node Z list and select the name of the egress (destination) node from the list.


Enter the IPv4 address of Node A.


Enter the IPv4 address of Node Z.

Bandwidth AZ and ZA

Enter the bandwidth (in bps) for each direction (Node A to Z and from Z to A). You must enter a number immediately followed by K (Kbps), M (Mbps), or G (Gbps). For example, 10M signifying 10 Megabits per second.

Note: If you enter a value without units, bps is applied.


Toggle the button to enable or disable ISIS protocol.


Toggle the button to enable or disable the RSVP protocol. Enter the RSVP bandwidth for each direction AZ (Node A to Z) and ZA (from Z to A).


Admin Group AZ and ZA

Select the bit-level link coloring from the list for A to Z and Z to A links.

Delay AZ and ZA

Enter the delay metric for each direction in milliseconds for A to Z and Z to A links.

This field is used only if the routing method is set to Delay Metric. When the program performs path placement and is trying to find the best route for a call, delay metrics are examined to determine the desirability/undesirability of a link. Two delay metrics are supported, one for each direction of the trunk. If asymmetric delay metrics are not supported by the hardware, the second delay is marked as '-'. If a delay metric is not defined for a trunk, a default delay is calculated based on propagation delay and serialization delay.

Admin Weight AZ and ZA

Enter the admin weight (number) for links between Node A and Z. Range: 1-2^31 (1 through 2147483648).

Util Reroute Threshold AZ and ZA

Enter the link utilization threshold (in percentage) for A to Z and Z to A links. When the link utilization exceeds the specified threshold, the controller reroutes the LSPs to reduce the link utilization within the threshold value.

Packet Loss Threshold

Enter the packet loss threshold in percentage for A to Z and Z to A links. When packet loss on a link exceeds this threshold, the link is considered unstable and rerouting of traffic to avoid the link is triggered. To achieve this, a maintenance event is created for each link, temporarily making the link unavailable for traffic.



Enter a text description for the link.


Click the Type field and select the type of link you want to create from the list.

Protected Link

Toggle this button to enable protected link status for this link. By default, this is disabled.

PCE supports preferred protected links routing constraint for packet LSPs. When this constraint is selected, PCE computes the path that maximizes the number of protected links, and therefore offers the best overall protection.

Custom Attributes Node A and Node Z

Simple name-value pairs which can be used to add any arbitrary customer-specific information. For example, to differentiate between properties for different vendor nodes.

To add custom properties associated with the node:

  1. Click add (+) icon to add a new row.

  2. Click the newly added row to enter the Name and Value.

  3. Click √ icon to save your changes.


  • You can add multiple rows (properties).

  • To delete an entry (row), select the row and click the delete (trash can) icon.

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