Cisco 10720 Configuration Guide - Page 66
Cable Connections, Four-node DPT Ring, Table 3-1
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Creating a Four-Node DPT Ring Chapter 3 Installing the Cisco 10720 Internet Router Figure 3-16 Four-node DPT Ring 1 A RX TX TX RX Node 1 B TX 2 RX A B RX Node 4 TX TX B Node 2 RX RX 2 A TX Outer ring Inner ring Node 3 B RX TX TX RX 2 A Table 3-1 Cable Connections for a Four-Node DPT Ring Cable Connections From Node / Connector Node 1 / TX side B Node 2 / TX side B Node 3 / TX side B Node 4 / TX side B Node 1 / TX side A Node 4 / TX side A Node 3 / TX side A Node 2 / TX side A To Node / Connector Node 2 / RX side A Node 3 / RX side A Node 4 / RX side A Node 1 / RX side A Node 4 / RX side B Node 3 / RX side B Node 2 / RX side B Node 1 / RX side B 57877 3-16 Cisco 10720 Internet Router Installation and Configuration Guide 78-13062-10
3-16
Cisco 10720 Internet Router Installation and Configuration Guide
78-13062-10
Chapter 3
Installing the Cisco 10720 Internet Router
Creating a Four-Node DPT Ring
Figure 3-16
Four-node DPT Ring
Table 3-1
Cable Connections for a Four-Node DPT 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
57877
Node 1
Node 4
Node 3
Inner ring
Outer ring
Node 2
TX
RX
RX
RX
RX
B
B
B
B
A
A
A
RX
TX
TX
TX
TX
RX
RX
TX
TX
TX
A
RX
1
2
2
2