Juniper EX3300 Hardware Guide

Disabling a Logical Interface
You can unconfigure a logical interface, effectively disabling that interface, without
removing the logical interface configuration statements from the configuration. To do
this, include the disable statement:
disable;
You can include this statement at the following hierarchy levels:
•
[edit interfaces interface-name unit logical-unit-number]
•
[edit logical-systems logical-system-name interfaces interface-name unit
logical-unit-number]
When an interface is disabled, a route (pointing to the reserved target “REJECT”) with
the IP address of the interface and a 32–bit subnet mask is installed in the routing table.
See Routing Protocols.
Configuring Flow Control
By default, the router or switch imposes flow control to regulate the amount of traffic
sent out on a Fast Ethernet, Tri-Rate Ethernet copper, Gigabit Ethernet, and 10-Gigabit
Ethernet interface. Flow control is not supported on the 4-port Fast Ethernet PIC. This is
useful if the remote side of the connection is a Fast Ethernet or Gigabit Ethernet switch.
You can disable flow control if you want the router or switch to permit unrestricted traffic.
To disable flow control, include the no-flow-control statement:
no-flow-control;
To explicitly reinstate flow control, include the flow-control statement:
flow-control;
You can include these statements at the following hierarchy levels:
•
[edit interfaces interface-name aggregated-ether-options]
•
[edit interfaces interface-name ether-options]
•
[edit interfaces interface-name fastether-options]
•
[edit interfaces interface-name gigether-options]
NOTE: On the Type 5 FPC, to prioritize control packets in case of ingress
oversubscription, you must ensure that the neighboring peers support MAC
flow control. If the peers do not support MAC flow control, then you must
disable flow control.
Related
Documentation
flow-control on page 181•
47Copyright © 2015, Juniper Networks, Inc.
Chapter 2: Configuration Tasks

Juniper EX3300 Specifications

General

Ethernet LAN	Yes
Authentication method	RADIUS, TACACS+
Connectivity technology	Wired
Ethernet interface type	Gigabit Ethernet
Number of VLANs	4096
Networking standards	IEEE 802.1ab, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3x, IEEE 802.3z
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Copper ethernet cabling technology	1000BASE-T, 100BASE-TX, 10BASE-T
Console port	-
ExpressCard slot	No
Fiber ports quantity	4
USB 2.0 ports quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Throughput	130 Mpps
Number of queues	8
MAC address table	16000 entries
Maximum data transfer rate	176 Gbit/s
Supported data transfer rates	10, 100, 1000Mbps
Switch type	Managed
Switch layer	L2
Security algorithms	SSH-2
Power source	AC
AC input voltage	100 - 240 V
Power consumption (typical)	100 W
Form factor	1U
Product color	Black
Flash memory	1024 MB
Processor frequency	1000 MHz
Compatible operating systems	Junos
Operating altitude	0 - 3049 m
Non-operating altitude	0 - 4877 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 45 °C
Storage relative humidity (H-H)	0 - 95 %
Operating relative humidity (H-H)	10 - 85 %
Supported network protocols	IPv6

Weight and Dimensions

Depth	310 mm
Width	437 mm
Height	44 mm
Weight	4900 g