Juniper EX2200 Hardware Guide

NOTE: We recommend that you be careful when setting this value. Any
interface bandwidth value that you configure using the bandwidth statement
affects how the interface cost is calculated for a dynamic routing protocol,
such as OSPF. By default, the interface cost for a dynamic routing protocol
is calculated using the following formula:
cost = reference-bandwidth/bandwidth,
where bandwidth is the physical interface speed. However, if you specify a
value for bandwidth using the bandwidth statement, that value is used to
calculate the interface cost, rather than the actual physical interface
bandwidth.
To configure the bandwidth value for a logical interface, include the bandwidth statement:
bandwidth rate;
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]
rate is the peak rate, in bps or cps. You can specify a value in bits per second either as a
complete decimal number or as a decimal number followed by the abbreviation k (1000),
m (1,000,000), or g (1,000,000,000). You can also specify a value in cells per second
by entering a decimal number followed by the abbreviation c; values expressed in cells
per second are converted to bits per second using the formula 1 cps = 384 bps. The value
can be any positive integer. The bandwidth statement is valid for all logical interfaces,
except multilink interfaces.
Configuring the Media MTU
The media maximum transmission unit (MTU) is the largest data unit that can be
forwarded without fragmentation.
This topic contains the following sections:
•
Media MTU Overview on page 54
•
How to Configure the Media MTU on page 55
•
Encapsulation Overhead by Encapsulation Type on page 56
•
Media MTU Sizes by Interface Type for M5 and M7i Routers with CFEB, M10 and M10i
Routers with CFEB, and M20 and M40 Routers on page 57
•
Media MTU Sizes by Interface Type for M40e Routers on page 57
•
Media MTU Sizes by Interface Type for M160 Routers on page 59
•
Media MTU Sizes by Interface Type for M7i Routers with CFEB-E, M10i Routers with
CFEB-E, and M320 and M120 Routers on page 59
53Copyright © 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