Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 105

If a TX Matrix Plus router contains redundant host subsystems, the independent
control planes are connected by two physical links between the two 10-Gigabit
Ethernet ports on their respective Routing Engines.
The primary link to the remote Routing Engine is at the
10-Gigabit Ethernet switch on the local Control Board also connects the
Routing Engine to the 10-Gigabit Ethernet port accessed by the
interface on the remote Routing Engine.
The alternate link to the remote Routing Engine is the 10-Gigabit Ethernet
port at the
ixgbe1
to the 10-Gigabit Ethernet switch on the remote Control Board, which
connects to the 10-Gigabit Ethernet port at the
Routing Engine.
If one of the two links between the host subsystems fails, both Routing Engines
can use the other link for IP communication.
T1600 routers in a routing matrix—On a T1600 router configured in a routing
matrix, the Routing Engine (RE-TXP-LCC) and Control Board (LCC-CB) function
as a unit, or host subsystem. For each host subsystem in the router, the JUNOS
Software automatically creates two internal Ethernet interfaces,
for the two Gigabit Ethernet ports on the Routing Engine.
The Gigabit Ethernet port at the
to the Routing Engines of every other T1600 router configured in the routing
matrix.
The port connects the Routing Engine to a Gigabit Ethernet switch on the
local Control Board.
The switch connects the Control Board to the remote Routing Engines of
every other T1600 router configured in the routing matrix.
If a T1600 router in a routing matrix contains redundant host subsystems, the
independent control planes are connected by two physical links between the
Gigabit Ethernet ports on their respective Routing Engines.
The primary link to the remote Routing Engine is at the
Gigabit Ethernet switch on the local Control Board also connects the Routing
Engine to the Gigabit Ethernet port accessed by the
remote Routing Engine.
The alternate link to the remote Routing Engine is at the
second port connects the Routing Engine to the Gigabit Ethernet switch on
the remote Control Board, which connects to the Gigabit Ethernet port at
the interface on the remote Routing Engine.
bcm0
If one of the two links between the host subsystems fails, both Routing Engines
can use the other link for IP communication.
Each router also has two serial ports, labeled console and auxiliary, for connecting
tty type terminals to the router using standard PC-type tty cables. Although these
ports are not network interfaces, they do provide access to the router.
Chapter 2: Understanding Router Interfaces
interface. This second port connects the Routing Engine
bcm0 interface connects the LCC Routing Engine
Understanding Internal Ethernet Interfaces
interface; the
ixgbe0
ixgbe1
ixgbe0 interface on the remote
and
bcm0 em1
interface; the
bcm0
em1 interface on the
em1 interface. This
,
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