Tx Matrix Plus Switch-Fabric Chassis Description - Juniper TX MATRIX PLUS Hardware Manual

TX Matrix Plus Router Hardware Guide
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TX Matrix Plus Switch-Fabric Chassis Description

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operate, each host subsystem requires a Routing Engine installed directly into the
TXP-CB. If two host subsystems are installed, one functions as the master and the
other functions as the backup.
If the master host subsystem (or either of its components) fails, the backup can take
over as the master. For information about the effect of taking the host subsystem
offline, see "Taking the Host Subsystem Offline" on page 354. For more information
about high availability features, see the Junos OS High Availability Configuration Guide.
TXP-CIPs—The TX Matrix Plus router has two TXP-CIPs. Each TXP-CIP provides the
ports for the control plane connections to the Control Boards (LCC-CBs) in up to four
T1600 routers.
NOTE: The remaining ports are reserved for future use.
If the master TXP-CIP fails, the backup TXP-CIP provides redundant connections to
the active host subsystem in the TX Matrix Plus router and the active LCC-CBs in the
T1600 routers. In this case, the Routing Engines in the TX Matrix Plus router and T1600
routers do not perform a switchover to their backups.
Power supplies—The TX Matrix Plus router has two power supplies, which share the
load evenly. If one power supply fails, the other power supply can provide full power
to the TX Matrix Plus router indefinitely.
Cooling system—The cooling system has redundant components, which are controlled
by the host subsystem. If one of the fans fails, the host subsystem increases the speed
of the remaining fans to provide sufficient cooling for the TX Matrix Plus router
indefinitely.
Routing Matrix with a TX Matrix Plus Router System Architecture on page 55
Routing Matrix with a TX Matrix Plus Router System Control Plane Architecture on
page 56
Routing Matrix with a TX Matrix Plus Router Switch Fabric and Switching Plane
Architecture on page 60
The TX Matrix Plus switch-fabric chassis is a rigid sheet metal structure that houses all
the other system components (see Figure 2 on page 10 and Figure 3 on page 11). The
chassis measures 52 in. (132.1 cm or approximately 29.7 U) high, 21.4 in. (54.4 cm) wide,
and 36.2 in. (91.9 cm) deep. The cable management system comb assembly that installs
on top of the chassis adds 17 in. (43.2 cm or approximately 9.7 U) to the height. You can
install a TX Matrix Plus router in a rack that has at least 39.4 U of usable vertical space.
The cable management system on the rear of the chassis adds 9 in. (22.86 cm) to the
depth. The chassis installs into 23-in. equipment racks or telco racks. One TX Matrix Plus
router can be installed into a (44-U) rack, if the rack can handle the maximum
configuration weight of 925 lb (420 kg).
Copyright © 2010, Juniper Networks, Inc.