Connections Between JCS1200 and T Series Chassis

The JCS1200 and T Series routers are connected through standard Ethernet links between one or more JCS switch modules and one or more T Series Control Boards (T-CBs). The JCS switch module has six ports. Port 1 is connected to Root System Domain 1 (RSD1), port 2 to RSD2, and port 3 to RSD3. Port 6 connects to the management ports on all Routing Engines in the JCS chassis. Port 4 and port 5 are reserved.

In Figure 1, Ethernet port 1 (RSD1) on JCS switch module 1 is connected to the T Series Connector Interface Panel (CIP) port on T-CB-0, whereas Ethernet port 1 (RSD1) on JCS switch module 2 is connected to the CIP port on T-CB-1.

When there are two JCS switch modules, each Routing Engine can be configured with two Ethernet management ports. One port (fxp0.0) is connected to port 6 on the JCS switch module in bay 1, whereas the other port (fxp1.0) is connected to port 6 on the JCS switch module in bay 2. Each connection is a dedicated 1000-Mbps link.

Figure 1: JCS Switch Module Ports

When you first access a PSD through the console port on the Routing Engine, you configure the IP address for one or both of these management ports.

Figure 2 provides a more detailed look at the connections between the two platforms. RE m indicates a master Routing Engine on the JCS1200 platform, whereas RE b represents a backup Routing Engine.

Figure 2: Connections Between JCS1200 and T Series Platforms