Juniper Networks G10 CMTS manual HFC Connector Module Fast Ethernet LEDs

Chassis Rear Modules

•HFC Connector Module

•
•	The HFC Connector Module contains a 6 U (267 mm) x 80 mm card with an 8 HP (40 mm),
•	double-wide rear panel. The module installs from the rear of the chassis and is
•	hot-swappable.
•
•	The HFC Connector Module has two RJ-45 Ethernet connectors carrying IP data to and from
•	the network-side interface. The module also has four downstream F-connectors and four
•	upstream F-connectors for routing traffic to and from the HFC network (see Figure 18 on
•	page 51).
•
•	The HFC Connector Modules are located on the opposite side of the midplane from the
•	DOCSIS Modules. These modules can occupy slots 1 through 4 and 10 through 13. There is
•	one HFC Connector Module for each DOCSIS Module.
•
•
		If a NIC Module is used in a version 2 chassis, you must use
•
•		a SIM opposite each DOCSIS Module to provide the
•		Ethernet connectivity between a DOCSIS Module and a
•		NIC Module (through the midplane). You must not use an
•		HFC Connector Module in this configuration.
•
•	The HFC Connector Module receives downstream IP data from the 100Base-T Ethernet cables
•
	coming from the NIC Access Module. IP data is then passed to the DOCSIS Module for
•
	processing into DOCSIS frames, then into an MPEG stream. The MPEG stream is modulated
•
	onto the RF carrier signal and routed back to the HFC Connector Module (through the
•
	midplane) for downstream distribution through the F-connectors to the HFC network.
•
•	Upstream data follows the path in reverse order, starting with data coming into the upstream
•
	F-connectors. Figure 19 on page 52 shows this data flow.
•
•	Table 24 summarizes the definitions of the Fast Ethernet LEDs on the HFC Connector
•
	Module. Figure 18 on page 51 shows the HFC Connector Module rear panel.
•
•

•Table 23: HFC Connector Module Fast Ethernet LEDs

•	LED	Function
•
	Green	On—Link is present.
•
•		Off—Link is not present.
•		Blinking—Activity on link.
•
	Amber	On—100Base-T mode.
•
		Off—10Base-T mode.
•
•
•
•
•
•
•
•
•
•
•
•
•
•

50 JUNOSg 3.0 G10 CMTS Hardware Guide