Cisco ONS 15454 SDH Specifications download pdf (Page 263)

6-11

Cisco ONS 15454 SDH Installation and Operations Guide, R3.3

May 2002

Chapter 6 Circuits and Tunnels

Creating VC Low-Order Path Tunnels for Port Grouping

Step 1 Log into an ONS 15454 SDH and click the Circuits tab. Circuits can be created from the network view,

node view, or card view.

Tip You can also right-click a source node in network view, select Provision Circuit To, and choose the

circuit destination node from the menu.

Step 2 Click Create.

Step 3 In the Circuit Creation dialog box (Figure 6-5 on page 6-12), complete the following fields:

• Name—(optional) Assign a name to the circuit. The name can be alphanumeric and up to 32

characters (including spaces). If you leave the Name field blank, CTC assigns a default name to the

circuit.

• Type—Select VC_LO_Path_Tunnel. The circuit type determines the circuit-provisioning options

that are displayed. The E3 and DS3i cards must use VC low-order path tunnels.

• Size—This field is automatically set to VC4.

• For VC3 Port Grouping Only—The checkbox is automatically selected.

• Bidirectional—The checkbox is automatically selected. (VC low-order path tunnels are

bidirectional).

• Number of circuits—This field automatically lists one port group.

Three ports form one port group. For example, in one E3 or one DS3i card, there are four port

groups: Ports 1—3 = PG1, ports 4—6 = PG2, ports 7—9 = PG3 and ports 10—12 = PG4. Low-order

path tunneling is performed at the VC3 level.

• Auto Ranged—The checkbox is automatically selected.

If you select the source and destination of one circuit, CTC automatically determines the source and

destination for the remaining Number of circuits and creates the circuits. To determine the source

and destination, CTC increments the most specific part of the end point. An end point can be a port

or a VC4. If CTC cannot find a valid destination, or selects an end point that is already in use, CTC

stops and allows you to either select a valid end point or cancel. If you select a valid end point and

continue, auto-ranging begins after you click Finish for the current circuit.

• Protected Drops—If this box is checked, CTC only displays protected cards and ports (1:1 or 1:N)

as choices for the circuit source and destination.

1 2 ... 258 259 260 261 262 263 264 265 266 267 268 ... 503 504

No comments

Cisco ONS 15454 SDH Specifications Page 263