Fujitsu PRIMERGY BX900 User Manual page 34

Standard ACLs are the oldest type of ACL. Standard ACLs control traffic by comparing the source
address of the IP packets to the addresses configured in the ACLs. Extended ACLs control traffic by
comparing the source and destination addresses of the IP packets to the addresses configured in the
ACLs. Rules can be configured to inspect up to six fields of a packet: Source IP, Destination IP, Source
L4 Port, Destination L4 Port, TOS Byte, and Protocol Number.
Strict Scheduling for Priority Queue
In addition to WRR, PRIMERGY BX400/BX900 also supports strict scheduling ensures that the highest
priority packets will always get serviced first, ahead of all other traffic, and that the other three queues
will be serviced using WRR scheduling
WRR (Weighted Round Robin)
The PRIMERGY BX400/BX900 supports Weighted Round Robin (WRR) scheduling. The WRR queuing
algorithm ensures that the lower priority packets are not entirely starved for bandwidth and are serviced
without compromising the priority settings administered by the network manager.
Differentiated Services
Network resources are apportioned based on traffic classification and priority, giving preferential
treatment to data with strict timing requirements according to network management policy. The
PRIMERGY BX400/BX900 supports the Differentiated Services (DiffServ). The DiffServ is a method of
offering quality-of-service treatment for network traffic without the need for a resource reservation
protocol. An administration specifically provisions the network equipment to identify the following: The
classes of traffic in the network & The QoS treatment the classes of traffic receive.
DiffServ controls the traffic acceptance throughout the DiffServ domain, the traffic transmission
throughout the DiffServ domain and the bandwidth guarantee within the network nodes. By controlling
the acceptance, the transmission and bandwidth, a policy-based range of services is established.
There are 3 keys QoS building blocks to configure DiffServ. Class, Policy and Services
Class,
Policy,
Services.
On configuring a Class, users specify the matching criterions of a specific traffic class. The criterions
provided in Ethernet Connection Blade include
Destination MAC address,
Destination IP address,
Destination layer 4 port,
IP DSCP,
IP Precedence,
IP TOS,
Protocol,
Source MAC address,
Source IP address,
Source layer 4 port,
Any.
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