GE MDS ORBIT ECR, Technical Manual

Page: 291 / 463

MDS 05-6632A01, Rev. F MDS Orbit MCR/ECR Technical Manual 291
In the IPv4 headers:
- IP protocol
- Source address
- Source port
- Destination address
- Destination port
- DSCP value
- TOS value
In the Ethernet header:
- Ether-type
- Source address
- Destination address
- VLAN ID
- VLAN priority
- VLAN encapsulated ether-type
The following figures show a simplified relationship between the packet classifiers and the packet queues.
IPv4 Classifiers Packet Queue
Egress
Interface
Local Process
Figure 3-208. Packet classification for locally generated traffic
Ingress
Interface
IPv4 Classifiers Packet Queue
Egress
Interface
Figure 3-209. Packet classification of routed traffic
Ingress
Interface
Bridge
Ethernet
Classifiers
IPv4 Classifiers Packet Queue
Egress
Interface
Figure 3-210. Packet classification of bridged traffic
It is important to note that the Ethernet classifiers are only pertinent to traffic that is bridged through the
system.
By design, Orbit QoS will affect data priorities if and only if the interface is saturated.
For example, QoS configured as:
- GOOSE traffic treated as the highest priority.
- VLAN 101 traffic treated as the next lowest priority.
- All remaining traffic treated as the lowest priority.
In this case, QoS is invoked only when traffic is queued due to exceeding maximum throughput. GOOSE
traffic would be given highest priority and be sent over the air first, followed by any VLAN 101 traffic
and then all remaining traffic.
Configuring
In the web UI, the QoS service is configured under QoS Services ---> Basic Config .