Hirschmann RS20 User Manual

Network Load Control
Basic Configuration
Release 6.0 07/2010
8.4 QoS/Priority
143
Note: Network protocols and redundancy mechanisms use the highest traffic
classes 3 (RS20/30/40, MS20/30, RSR20/RSR30, MACH 1000, OCTOPUS)
or 7 (PowerMICE, MACH 104/MACH 1040, MACH 4000). Therefore, select
other traffic classes for application data.
Figure 37: Ethernet data packet with tag
Figure 38: Tag format
t
min. 64, max. 1522 Octets
Preamble Field Start Frame Delimiter Field Destination Address Field Source Address Field Tag Field Data Field Length/Type Field Data Field Pad Field Frame Check
Seque
nce Field
42-1500 Octets 4246671
t
4 Octets
User Priority, 3 Bit Canonical Format Identifier
1 Bit
VLAN Identifier
12 Bit
Tag Protocol Identifier
2 x 8 Bit

Hirschmann RS20 Specifications

General

Mounting	DIN Rail
Operating Temperature	-40°C to +70°C
Protection Class	IP30
Switching Technology	Store-and-Forward
Product Type	Industrial Ethernet Switch
Port Details	10/100 Mbps Ethernet ports
Switching Capacity	3.2 Gbps
MAC Address Table	8k
Management	Web, SNMP
Redundancy	MRP
Ports	8 or 16