User manual
58
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Between the applicant and the authentication system using the MD5-Challenge, other methods do not support network
connection without "authentication" option, Please select "Accessories" -> "Administrative Tools" -> "Component Services"
-> "Service", set the "Wired AutoConfig" to "automatic" billing server, if the setting is incorrectly will also result in the
applicant cannot pass authentication. We do not need to set the appropriate port as the uplink port if don't have billing
system, the default is authenticated, the user can not set up, all uplink ports or downlink ports must be forced to certificate,
be "prohibit the use of certification", or cannot use the remote server, the administrator have to make sure that the device
can access the remote server if use the remote server, the device address of the gateway settings are correct, if you use
the domain name, the DNS must be set correctly.
6.6 Advanced configuration
6.6.1 QOS configuration
QoS (Quality of Service) is a ubiquitous concept that exists in the service supply and demand relations, it
evaluates the ability of service providers to meet customer service requirements. Commonly known as
QoS, is the packet forwarding process for delay, jitter, packet loss rate and other core needs to provide
support for the assessment of the service capabilities.
6.6.1.1 Global configuration
QoS provides four internal queues, each queue supports four different levels of traffic, shorter persistence
time of high-priority data packets in the switch, supports lower latency for certain delay-sensitive traffic.
According to 802.1p priority tags and IP TOS, equipment can be able to put the packets to an appropriate
level.
Users can choose QOS priority queue mechanism, its queue mechanism has four kinds: SP(Strict
Priority), WRR(Weighted Round Robin), WFQ(Weighted Fair Queuing), DRR(deficit round robin)
SP: according to the priority order, the higher priority forwarding.
WRR: Each port is divided into a number of output queue, the queue between the scheduling, to ensure
that each queue will get a certain service time
WFQ: WFQ weighting is based on the flow in the IP precedence, to ensure that the flow of high IP
precedence distribution to more bandwidth. Algorithm for (IP pre1)/Sum(IP pre1);
DRR: DRR algorithm is an extension of RR algorithm. DRR algorithm for each queue to assign a constant
QN (to the weights of the time slice) and a variable DN (difference).
In the menu bar, click "main menu", "advanced configuration", "QoS configuration", "global configuration"
into QoS global configuration interface, the interface can configure QoS scheduling strategy, cos queue
map and DSCP queue mapping.