Figure 5-21 Connecting Fiber To A Four-Node Upsr - Cisco ONS 15327 User Documentation

Unidirectional Path Switched Rings
Procedure: Install the UPSR Trunk Cards
Install the OC-N cards that will serve as the UPSR trunk cards. You can install the OC-3, OC-12, and
Step 1
OC-48 cards in any high-speed slot (Slots 1–4).
Allow the cards to boot.
Step 2
Attach the fiber to the east and west UPSR ports at each node.
Step 3
To avoid errors, make the east and west ports the same slot in each node. Fiber connected to an east port
at one node must plug into the west port on an adjacent node.
four-node UPSR with trunk cards in Slot 1 (west) and Slot 2 (east).
Always plug the fiber plugged into the transmit (Tx) connector of an OC-N card at one node into the
receive (Rx) connector of an OC-N card at the adjacent node. The card will display an SF LED if Tx and
Rx fibers are mismatched.

Figure 5-21 Connecting fiber to a four-node UPSR

Tx
Tx
Procedure: Configure the UPSR DCC Terminations
Log into the first node that will be in the UPSR.
Step 1
Click the Provisioning > Sonet DCC tabs.
Step 2
In the SDCC Terminations section, click Create.
Step 3
On the Create SDCC Terminations dialog box, press Control and click the two slots/ports that will serve
Step 4
as the UPSR ports at the node. For example, Slot 3 (OC-48)/Port 1 and Slot 2 (OC-48)/Port 1.
Note
Cisco ONS 15327 User Documentation, R3.3
5-24
Slot 1 Slot 2
Rx Tx Rx
Node 1
Slot 1 Slot 2
Rx Tx Rx
Node 3
The ONS 15327 uses the SONET Section layer DCC (SDCC) for data communications. It
does not use the Line DCCs. Line DCCs can be used to tunnel DCCs from third party
equipment across ONS 15327 networks. For procedures, see the
section on page 6-20.
Figure 5-21 shows fiber connections for a
Slot 1 Slot 2
Tx Rx Tx Rx
Node 2
Slot 1 Slot 2
Tx Rx Tx Rx
Node 4
"Creating DCC Tunnels"
Chapter 5 SONET Topologies
June 2002