Understanding Interface Naming Conventions On Ex Series Switches - Juniper JUNOS OS 10.3 - SOFTWARE Manual

Table 161: Special Interface Types and Purposes (continued)
Type
Virtual Chassis port (VCP)
interfaces
Virtual management Ethernet
(VME) interface
Related
Documentation

Understanding Interface Naming Conventions on EX Series Switches

Copyright © 2010, Juniper Networks, Inc.
Purpose
Each EX4200 switch has two dedicated Virtual Chassis ports (VCPs) on its rear panel. These
ports can be used to interconnect two to ten EX4200 switches as a Virtual Chassis, which
functions as a single network entity. See "Understanding the High-Speed Interconnection of
the Virtual Chassis Members" on page 932. When you power on EX Series switches that are
interconnected in this manner, the software automatically configures the VCP interfaces for
the dedicated ports that have been interconnected. These VCP interfaces are not configurable
or modifiable. You can also interconnect EX4200 switches across distances of up to 25 miles
(40 km) by using the SFP, SFP+, or XFP uplink module ports. To do so, you must explicitly set
the uplink module ports on the members you want to connect as VCPs. See "Setting an Uplink
Module Port as a Virtual Chassis Port (CLI Procedure)" on page 1023. When you set the uplink
module ports as uplink VCPs and connect member switches through those uplink VCPs, a LAG
is automatically formed when the link speed is the same on connected VCPs and at least two
VCPs on one member are connected to at least two VCPs on another member. See
"Understanding Virtual Chassis Configurations and Link Aggregation" on page 932.
EX4200 switches have a VME interface. This is a logical interface that is used for Virtual Chassis
configurations and allows you to manage all the members of the Virtual Chassis through the
master. For more information on the VME interface, see "Understanding Global Management
of a Virtual Chassis Configuration" on page 929.
EX2200 Switches Hardware Overview on page 25
EX3200 and EX4200 Switches Hardware Overview on page 26
EX4500 Switches Hardware Overview on page 30
EX8208 Switch Hardware Overview on page 33
EX8216 Switch Hardware Overview on page 36
PoE and EX Series Switches Overview on page 3303
Understanding Aggregated Ethernet Interfaces and LACP on page 1099
Understanding Layer 3 Subinterfaces on page 1104
Juniper Networks EX Series Ethernet Switches use a naming convention for defining the
interfaces that is similar to that of other platforms running under Juniper Networks Junos
operating system (Junos OS). This topic provides brief information on the naming
conventions used for interfaces on EX Series switches. For additional information, see
the Junos OS Network Interfaces Configuration Guide at
http://www.juniper.net/techpubs/software/junos/index.html
This topic describes:
Physical Part of an Interface Name on page 1098
Logical Part of an Interface Name on page 1099
Wildcard Characters in Interface Names on page 1099
Chapter 50: Interfaces—Overview
.
1097