Specifications

4-2
Book Title
78-13113-06 B0
Chapter 4 Creating a Four-Node Ring Using the Uplink Cards
DPT Uplink Card
Step 1 Install a DPT uplink card in a Cisco 10720 Internet Router on the network.
Step 2 Choose a router with a DPT uplink card to become Node 1 in the four-node DPT ring.
Step 3 Add nodes to the ring by connecting the receive (RX) and transmit (TX) cables. The RX port on one DPT
uplink card must be connected to a TX port on the next DPT uplink card.
Figure 4-2 provides a view of the network when a four-node DPT ring is created.
Table 4-1 Cable Connections for an Four-Node SRP Ring
Cable Connections
From Node / Connector To Node / Connector
Node 1 / TX side B Node 2 / RX side A
Node 2 / TX side B Node 3 / RX side A
Node 3 / TX side B Node 4 / RX side A
Node 4 / TX side B Node 1 / RX side A
Node 1 / TX side A Node 4 / RX side B
Node 4 / TX side A Node 3 / RX side B
Node 3 / TX side A Node 2 / RX side B
Node 2 / TX side A Node 1 / RX side B