Special Interfaces; Table 3: Network Interface Types And Purposes; Table 4: Special Interface Types And Purposes - Juniper EX2200 Hardware Manual

Network Interfaces for EX4300 Switches

Table 3: Network Interface Types and Purposes

Type
Aggregated Ethernet
interfaces
LAN access interfaces
Power over Ethernet (PoE)
interfaces
Trunk interfaces

Special Interfaces

Table 4: Special Interface Types and Purposes

Type
Console port
Loopback
Management interface
4
Purpose
All EX Series switches allow you to group Ethernet interfaces at the physical layer to form a
single link layer interface, also known as a link aggregation group (LAG) or bundle. These
aggregated Ethernet interfaces help to balance traffic and increase the uplink bandwidth.
Use these EX Series switch interfaces to connect a personal computer, laptop, file server, or
printer to the network. When you power on an EX Series switch and use the factory-default
configuration, the software automatically configures interfaces in access mode for each of the
network ports. The default configuration also enables autonegotiation for both speed and link
mode.
EX Series switches provide PoE network ports with various switch models. These ports can be
used to connect voice over IP (VoIP) telephones, wireless access points, video cameras, and
point-of-sale devices to safely receive power from the same access ports that are used to
connect personal computers to the network. PoE interfaces are enabled by default in the factory
configuration.
EX Series access switches can be connected to a distribution switch or customer-edge (CE)
switches or routers. To use a port for this type of connection, you must explicitly configure the
network interface for trunk mode. The interfaces from the distribution switch or CE switch to
the access switches must also be configured for trunk mode.
Table 4 on page 4 lists the types of special interfaces supported on EX Series switches.
Purpose
Each EX Series switch has a serial port, labeled
terminals to the switch using standard PC-type tty cables. The console port does not have a
physical address or IP address associated with it. However, it is an interface in the sense that
it provides access to the switch. On an EX3300 Virtual Chassis, an EX4200 Virtual Chassis, or
an EX4500 Virtual Chassis, you can access the master and configure all members of the Virtual
Chassis through any member's console port. For more information about the console port in a
Virtual Chassis, see Understanding Global Management of a Virtual Chassis.
All EX Series switches have this software-only virtual interface that is always up. The loopback
interface provides a stable and consistent interface and IP address on the switch.
The Juniper Networks Junos operating system (Junos OS) for EX Series switches automatically
creates the switch's management Ethernet interface,
provides an out-of-band method for connecting to the switch. To use
port, you must configure its logical port,
management interface over the network using utilities such as SSH or Telnet. SNMP can use
the management interface to gather statistics from the switch. (The management interface
is analogous to the
me0 fxp0
or
CON CONSOLE
me0 . The management Ethernet interface
, with a valid IP address. You can connect to the
me0.0
interfaces on routers running Junos OS.)
Copyright © 2015, Juniper Networks, Inc.
, for connecting tty-type
as a management
me0