Supported Platforms
Displaying Internal Ethernet Interfaces for a Routing Matrix with a TX Matrix Plus Router
The router internal Ethernet interface connects the Routing Engine with the router’s packet forwarding components. The Junos OS automatically configures internal Ethernet interfaces. For TX Matrix Plus routers, the internal Ethernet interfaces are ixgbe0 and ixgbe1. For T1600 routers configured in a routing matrix, the internal Ethernet interfaces are bcm0 and em1. For more information about internal Ethernet interfaces, see Understanding Internal Ethernet Interfaces.
 | Note: Do not modify or remove the configuration for the internal Ethernet interface that the Junos OS automatically configures. If you do, the router will stop functioning. |
The following example is a sequence of show interfaces commands issued in a Junos OS command-line interface (CLI) session with a TX Matrix Plus router in a routing matrix. In the example, the TX Matrix Plus router, which is also called the switch-fabric chassis (SFC), is known by the IP host name host-sfc-0 and contains redundant Routing Engines. The commands display information about the management Ethernet interface and both internal Ethernet interfaces configured on the Routing Engine to which you are currently logged in:
user@host-sfc-0> show interfaces em0 terseInterface Admin Link Proto Local Remote em0 up up em0.0 up up inet 192.168.35.95/24
user@host-sfc-0> show interfaces ixgbe0
terseInterface Admin Link Proto Local Remote
ixgbe0 up up
ixgbe0.0 up up inet 10.34.0.4/8
162.0.0.4/2
inet6 fe80::200:ff:fe22:4/64
fec0::a:22:0:4/64
tnp 0x22000004
user@host-sfc-0> show interfaces ixgbe1
terseInterface Admin Link Proto Local Remote
ixgbe1 up up
ixgbe1.0 up up inet 10.34.0.4/8
162.0.0.4/2
inet6 fe80::200:1ff:fe22:4/64
fec0::a:22:0:4/64
tnp 0x22000004
The following example is a sequence of show interfaces commands issued in a CLI session with a T1600 router in a routing matrix. In the example, the T1600 router, which is also called the line-card chassis (LCC), is known by the IP host name host-sfc-0-lcc-2 and contains redundant Routing Engines.
This T1600 router is connected to the routing matrix through a connection in the TXP-SIB-F13 in slot 2 of the SCC. The commands display information about the management Ethernet interface and both internal Ethernet interfaces configured on the Routing Engine to which you are currently logged in:
| Note: In a routing matrix, the show interfaces command displays information about the current router only. If you are logged in to the TX Matrix Plus router, the show interfaces command output does not include information about any of the attached T1600 routers. To display interface information about a specific T1600 router in the routing matrix, you must first log in to that router. |
The previous example shows a CLI session with the TX Matrix Plus router. To display interface information about the T1600 router known as host-sfc-0-lcc-2, first use the request routing-engine login command to log in to that LCC.
user@host-sfc-0> request routing-engine
login lcc 2--- JUNOS 9.6I built 2009-06-22 18:13:04 UTC % cli warning: This chassis is a Line Card Chassis (LCC) in a multichassis system. warning: Use of interactive commands should be limited to debugging. warning: Normal CLI access is provided by the Switch Fabric Chassis (SFC). warning: Please logout and log into the SFC to use CLI.
user@host-sfc-0-lcc-2> show interfaces
em0 terseInterface Admin Link Proto Local Remote em0 up up em0.0 up up inet 192.168.35.117/24
user@host-sfc-0-lcc-2> show interfaces
bcm0 terseInterface Admin Link Proto Local Remote
bcm0 up up
bcm0.0 up up inet 10.1.0.5/8
129.0.0.5/2
inet6 fe80::201:ff:fe01:5/64
fec0::a:1:0:5/64
tnp 0x1000005
user@host-sfc-0-lcc-2> show interfaces
em1 terseInterface Admin Link Proto Local Remote
em1 up up
em1.0 up up inet 10.1.0.5/8
129.0.0.5/2
inet6 fe80::201:1ff:fe01:5/64
fec0::a:1:0:5/64
tnp 0x1000005
