Tx Matrix Plus Routing Engine Description - Juniper TX MATRIX PLUS Hardware Manual

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TX Matrix Plus Routing Engine Description

Copyright © 2010, Juniper Networks, Inc.
Table 8: TXP-CB LEDs (continued)
Label Color
Green
ETHERNET
Yellow
–
Green
ACT
–
TX Matrix Plus TXP-CB Overview on page 21
Maintaining the TX Matrix Plus TXP-CBs on page 268
Troubleshooting the TX Matrix Plus Host Subsystem on page 311
Troubleshooting the TX Matrix Plus TXP-CBs on page 311
You can install one or two Routing Engines in the TX Matrix Plus router. The Routing
Engines install into the control boards labeled
installed, one functions as the master and the other acts as the backup. If the master
Routing Engine fails or is removed and the backup is configured appropriately, the backup
restarts and becomes the master.
NOTE: Nonstop active routing is supported for the TX Matrix Plus router in
Junos OS Release 10.0 and later.
The TX Matrix Routing Engine constructs and maintains one or more routing tables. From
the routing tables, the Routing Engine derives a table of active routes, called the forwarding
table, which is then copied to the T1600 routers. The Junos kernel running on each T1600
Routing Engine copies its forwarding table to all Packet Forwarding Engines in the router.
The design of the ASICs allows the forwarding table in the Packet Forwarding Engine to
be updated without interrupting forwarding performance.
The TX Matrix Plus Routing Engines handle all routing protocols, as well as the software
processes that control the interfaces in the TX Matrix Plus router and user access to the
TX Matrix Plus router. All Routing Engines in the routing matrix run software processes
that control chassis components and system management.
The Routing Engines include the following functions and features:
Chapter 2: TX Matrix Plus Hardware Component Overview
State Description
On steadily 1-Gbps connection
On steadily 10/100-Mbps connection
Off TXP-CB is offline.
On steadily Traffic is passing through the port.
Off No traffic is passing through the port.
and
CB0
. If two Routing Engines are
CB1
25