Cisco ONS 15454 Series Procedure Manual page 178

NTP-A181 Create an Automatically Routed DS-1 Circuit
Click Include to include the node or span in the circuit. Click Exclude to exclude the node or span
c.
from the circuit. The order in which you choose included nodes and spans is the order in which the
circuit is routed. Click spans twice to change the circuit direction.
Repeat Steps b and c for each node or span you wish to include or exclude.
d.
Review the circuit route. To change the circuit routing order, choose a node in the Required
e.
Nodes/Lines or Excluded Nodes Links lists and click the Up or Down buttons to change the circuit
routing order. Click Remove to remove a node or span.
Click Next. In the Create area of the VT Matrix Optimization panel, choose one of the following:
Step 16
Create VT tunnel on transit nodes—This option is available if the DS-1 circuit passes through a node
•
that does not have a VT tunnel, or if an existing VT tunnel is full. VT tunnels allow VT circuits to
pass through ONS 15454s without consuming cross-connect card resources. VT tunnels can carry
28 VT1.5 circuits. In general, creating VT tunnels is a good idea if you are creating many VT
circuits from the same source and destination. Refer to the Cisco ONS 15454 Reference Manual for
more information.
Create VT aggregation point—This option is available if the DS-1 circuit source or destination is on
•
an EC1, DS3, DS3E, DS3i-N-12, DS3XM-6, DS3XM-12, or OC-N port on a BLSR, 1+1, or
unprotected node. VAPs collect DS-1s on an STS for handoff to non-ONS 15454 networks or
equipment, such as an IOF, switch, or digital access and cross-connect system (DACS). It allows
VT1.5 circuits to be routed through the node using one STS connection on the cross-connect card
matrix rather than multiple VT connections on the cross-connect card VT matrix. If you want to
aggregate the DS-1 circuit you are creating with others onto an STS for transport outside the
ONS 15454 network, choose one of the following:
–
–
None—Choose this option if you do not want to create a VT tunnel or a VAP. This is the only
•
available option if CTC cannot create a VT tunnel or VAP.
If you selected Review Route Before Creation in
Step 17
continue with
Click Next.
a.
Review the circuit route. To add or delete a circuit span, choose a node on the circuit route. Blue
b.
arrows show the circuit route. Green arrows indicate spans that you can add. Click a span arrowhead,
then click Include to include the span or Remove to remove the span.
If the provisioned circuit does not reflect the routing and configuration you want, click Back to
c.
verify and change circuit information. If the circuit needs to be routed to a different path, see the
"NTP-A182 Create a Manually Routed DS-1 Circuit" procedure on page
Step 18 Click Finish. One of the following results occurs, depending on the circuit properties you chose in the
Circuit Creation dialog box:
• If you entered more than 1 in the Number of Circuits field and selected Auto-ranged, CTC
automatically creates the number of circuits entered in the Number of Circuits field. If auto-ranging
cannot complete all the circuits, for example, because sequential ports are unavailable at the source
or destination, a dialog box appears. Set the new source or destination for the remaining circuits,
then click Finish to continue auto-ranging. After completing the circuits, the Circuits window
appears.
Cisco ONS 15454 Procedure Guide, R5.0
6-10
STS grooming node is [source node], VT grooming node is [destination node]—Creates the
VAP on the DS-1 circuit source node. This option is available only if the DS-1 circuit originates
on an EC1, DS3, DS3E, DS3i-N-12, DS3XM-6, DS3XM-12, or OC-N card.
STS grooming node is [destination node], VT grooming node is [source node]—Creates the
VAP on the DS-1 circuit destination node. This option is available only if the DS-1 circuit
terminates on an EC1, DS3, DS3E, DS3i-N-12, DS3XM-6, DS3XM-12, or OC-N card.
Step 18.
Chapter 6
Step 11, complete the following substeps. If not,
Create Circuits and VT Tunnels
6-11.
August 2005