Juniper EX Series User Manual

Table 107: Summary of Key CoS Forwarding Class Output Fields
ValuesField
Names of forwarding classes assigned to queue numbers. The following are the default
forwarding classes:
• best-effort—Provides no special CoS handling of packets. Loss priority is typically not
carried in a CoS value.
• expedited-forwarding—Provides low loss, low delay, low jitter, assured bandwidth, and
end-to-end service.
• assured-forwarding—Provides high assurance for packets within the specified service
profile. Excess packets are dropped.
• network-control—Packets can be delayed but not dropped.
EX8200 switches have the following additional default forwarding classes:
• mcast-be—Provides no special CoS handling of packets.
• mcast-ef—Provides low loss, low delay, low jitter, assured bandwidth, and end-to-end
service.
• mcast-af—Provides high assurance for packets within the specified service profile. Excess
packets are dropped.
EX4300 switches supports all the forwarding classes mentioned above and the one
mentioned in this section:
• mcast-nc—Provides multicast network-control traffic.
Forwarding Class
Queue number corresponding to the forwarding class name. The default forwarding classes
are assigned as follows:
• best-effort—0
• expedited-forwarding—5
• assured-forwarding—1
• network-control—7
• mcast-be—2
• mcast-ef—4
• mcast-af—6
EX4300 switches have the following queue numbers for the forwarding classes:
• best-effort—0
• expedited-forwarding—1
• assured-forwarding—2
• network-control—3
• mcast-be—8
• mcast-ef—9
• mcast-af—10
• mcast-nc—11
Queue
(EX8200 switches only) Fabric priority for the forwarding class, either high or low. The fabric
priority determines the priority of packets entering the switch fabric.
Fabric Priority
229Copyright © 2017, Juniper Networks, Inc.
Chapter 16: Monitoring Tasks

Juniper EX Series Specifications

General

Series	EX Series
Category	Switch
Layer	Layer 2/3
Operating System	Junos OS
Managed	Yes
ACLs	Yes
Port Density	Varies by model
Power over Ethernet (PoE)	Available on some models
Virtual Chassis	Supported on some models
Form Factor	Fixed configuration, Modular
Switching Capacity	Varies by model
Forwarding Rate	Varies by model
Power Supply	Varies by model (AC or DC, redundant options available)
Management	CLI, Web UI, SNMP
Redundancy	Power supply, fan, Virtual Chassis
Latency	Varies by model
Jumbo Frames	Supported
VLAN Support	Yes
MAC Address Table Size	Varies by model
QoS	Yes
Energy Efficiency	EEE (802.3az)
Dimensions	Varies by model
Weight	Varies by model
Operating Temperature	0° to 45° C
Storage Temperature	-40° to 70° C
Humidity	5% to 90% non-condensing
MTBF	Varies by model
Warranty	Limited Lifetime