Removing a node from Topology involves two cases namely,
Case 1: No L2 Configuration to be deleted. In this case, the user can directly remove a node from the ring or link by deleting the connecting TLs to that node and restore the ring or link by connecting the remaining nodes.
Case 2: L2 Configuration to be deleted. In this case, use button. The node to be deleted must be a pass through node; else an alert message "None of the ports are free for deletion" will be displayed.
Points to Remember
It is recommended to run service discovery before removing the node from topology. For more information, refer to the topic Discover Services.
If the node is in new state, that means no tunnels or services created, remove the node directly.
To remove the node from topology, both the topological links of a pair (east port and west port) should belong to same switch.
Node cannot be removed when:
tunnels created on the node are in orphan, conflict and incomplete state.
topological links are shared between different MPLS tunnels and services. If the user tries to delete the node in this case, a failure message "Link on the port:EMS-<name>|<Node IP>|ci|si|pn is a shared link. Deleting which would leave some tunnels and services permanently broken. Please delete all the extra configurations on this port." will be displayed.
Setup
Node removal from topology is explained using the setup as per the following steps:
Node A, Node B, and Node C present with Ethernet links from Nodes A to Node B and Node B to Node C.
L2 service present from Node A to Node C with Node B as a pass through node.
Procedure
Perform the following steps to delete a node (Node B) from topology:
Go to Topology menu and click Topology View option. Topology View window is displayed.
Click Network View (Nodes)tab and select the desired partition from the left hand pane.
Select the node to be removed, go to Topology menu tab and click . The Remove Node: "EMS-<name>|<Node IP>" is displayed with port details in Remove Node browser window.
Under Ports Info, select the row with East Port and West Port pair information of the node for deletion. For example, to remove Node B from topology (as shown in the setup above) select the row with ETH-1-5-6 as East Port and ETH-1-5-5 as West Port.
NOTE: To remove the node from different links, select the rows and press CTRL key simultaneously to select multiple rows.
Click Remove Node. A confirmation message is displayed.
Click OK. Node Deletion request sent successfully message is displayed.
Click OK. Click Close to exit the Remove Node browser window. The connecting TLs between the nodes will still remain and have to be manually deleted.
Physically connect fibers from Node A to Node C and configure the topological link between Node A and Node C as shown in the following figure:
button. The node to be deleted must be a pass through node; else an alert message "None of the ports are free for deletion" will be displayed.
. The Remove Node: "EMS-<name>|<Node IP>" is displayed with port details in Remove Node browser window.
