Understanding Management Ethernet Interfaces
The management Ethernet interface on the router provides an out-of-band method for connecting to the router. You can connect to the management interface over the network using utilities such as ssh and telnet. The Simple Network Management Protocol (SNMP) can use the management interface to gather statistics from the router.
- M Series, MX Series, and most T Series routers—For
M Series and MX Series routers, and for T Series routers other than
TX Matrix Plus routers or T1600 routers configured in a routing matrix,
the JUNOS Software automatically creates the router’s management
Ethernet interface, fxp0. To use fxp0 as a management
port, you must configure its logical port, fxp0.0, with a
valid IP address.
Note: On M Series routers and T Series routers running JUNOS Software later than Release 7.0R2.7 or Release 7.1R2.2, the fxp0 interface does not support load-sharing next hops. This restriction only affects fxp0 routes.
- TX Matrix Plus routers and T1600 routers in a routing
matrix—For Juniper Networks TX Matrix Plus Routers and for T1600
Core Routers configured in a routing matrix, the JUNOS Software automatically
creates the router’s management Ethernet interface, em0. To use em0 as a management port, you must configure its
logical port, em0.0, with a valid IP address.
Note: Automated scripts that have been developed for standalone T1600 routers (T1600 routers not configured in a routing matrix) might contain references to the fxp0, fxp1, or fxp2 interfaces. Before reusing the scripts on T1600 routers in a routing matrix, edit any command lines that reference the T1600 router management Ethernet interface fxp0 by replacing “fxp0” with “em0.”
- J Series routers—For the Juniper Networks J Series Services Routers, you can use any of the built-in Ethernet ports as a management interface. To use a built-in interface as a management Ethernet interface, configure it with a valid IP address. The factory configuration for the J4350 and J6350 Services Routers automatically enables the J-Web user interface on the ge-0/0/0, ge-0/0/1, ge-0/0/2, and ge-0/0/3 interfaces. To manually configure J-Web access, include the interface interface-name statement at the [edit system services web-management http] hierarchy level.
For information about establishing basic connectivity and configuring a management port, see the Getting Started guide for your router.
