Understanding Interface Naming Conventions On J-Ex Series Switches - Dell PowerConnect J-EX4200-24T Software Manual

Table 118: Special Interface Types and Purposes (continued)
Type
Virtual Chassis port (VCP)
interfaces
Virtual management Ethernet
(VME) interface
Related
Documentation

Understanding Interface Naming Conventions on J-EX Series Switches

Physical Part of an Interface Name
Purpose
Each J-EX4200 switch has two dedicated Virtual Chassis ports (VCPs) on its rear panel. These
ports can be used to interconnect two to ten J-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 702. When you power on J-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 J-EX4200 switches across distances of up to 25 miles
(40 km) by using the SFP or SFP+ 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 792. 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 702.
J-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 699.
J-EX4200 Switches Hardware Overview on page 25
J-EX8208 Switch Hardware Overview on page 27
J-EX8216 Switch Hardware Overview on page 30
PoE and J-EX Series Switches Overview on page 3009
Understanding Aggregated Ethernet Interfaces and LACP on page 867
Understanding Layer 3 Subinterfaces on page 871
J-EX Series Switches use a naming convention for defining the interfaces that is similar
to that of other platforms running under the Junos OS. This topic provides brief information
on the naming conventions used for interfaces on J-EX Series switches. For additional
information, see the Junos OS Network Interfaces Configuration Guide at
http://www.juniper.net/techpubs/software/junos/
This topic describes:
Physical Part of an Interface Name on page 865
Logical Part of an Interface Name on page 866
Wildcard Characters in Interface Names on page 867
Interfaces in Junos OS are specified as follows:
type-fpc / pic / port
Chapter 50: Interfaces—Overview
.
865