Juniper EX2200 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 EX2200 Specifications

General

Throughput	77 Mpps
MAC address table	8000 entries
Jumbo frames support	Yes
Number of VLANs	1024
Networking standards	-
Switch type	Managed
SFP module slots quantity	4
Installed SFP modules quantity	0
Basic switching RJ-45 Ethernet ports quantity	48
Stackable	No
Product color	Black
Power consumption (typical)	100 W
Operating altitude	0 - 3048 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 %

Weight and Dimensions

Depth	254 mm
Width	441 mm
Height	43 mm
Weight	3600 g