qos ppt

Hybrid testing of QOS and ACL in a vswitch: Declaration: the correspondence between queues and priorities in QOS is as follows: Traffic Class table---------------------Port Priority Traffic Class---------------------------Gi0/4 0 1Gi0/4 1 0Gi0/4 2 0Gi0/4 3 1Gi0/4 4 2Gi0/4 5 2Gi0/4 6 3Gi0/4 7 3 Lab device: One IXIA device and one vswitch Device, The test line is as follows: IXIA PORT SWITCH PORT 1 ----------

24-port full-Gigabit Switch error frame Filtering test QoS test master knowledge of the following 24-port full-Gigabit Switch knowledge, such as broadcast forwarding and latency test. You can easily select your preferred method to implement 24 full gigabit switches. Many methods will make you suddenly enlightened. Test of broadcast forwarding and latency of www.2cto.com this test measures the packet loss rate of the tested device when forwarding the b

Aggregatable Networks:Coexistence between voice and video trafficLack of bandwidth, end-to-end latency, jitter delay, packet lossAddressing bandwidth scarcity:1, Update bandwidth2, forwarded as important traffic3, 2-layer compression4, compressed 3 laminarDelay:1, processing delay2, Queue delay3, serial delay (8bit converted to one byte)4, Link delayTo resolve the delay:1, Update bandwidth2, forward the important traffic3, compression 2-layer load4, compressed IP headerPacket loss rate:1,tail dr

above. Personally think that u32 match can match different protocols such as IP TCP ICMP, and match such as IP segment, port, etc., but after all, not as iptables more flexible, while u32 match for two layers of sense, which all make it through iptables/ebtables Mark aims to make the filter more flexible and controllable. For two examples, the first is TC + iptables to the IP address 192.168.1.1 packet to do QoS, limit bps to 2Mbit, allow burst bps

DM-ioband is not integrated in mainstream kernel and must be patched for use. Besides, it must be the source code of the kernel community, if I patch the kernel with a red hat, an error is reported... Http://sourceforge.net/apps/trac/ioband/wiki/dm-ioband After the patch is downloaded, mark it and make menuconfig. Then, check the ioband module under LVM/raid/devicemapper, re-compile and install the kernel, and restart lsmod | grep ioband, if you can see ioband, it indicates that the installation

I recently read an article about QOS, which is good. ========================================================== === Detailed description of IP QoS stream classification methods [Url] www.net130.com [/url] Date: 2007-11-18 views: 3337 Source: blog.sina.com.cn/stimwooi discussed with my colleagues the priority of qostraffic and resolution traffic. Later I found this article. . In RFC 791, the TOS-bit IP prec

First, Service model for QOS: 1. Do your bestAll data are equal, the tail drops are implemented when congestion occurs; forward --fifo2. The Integration service model uses RSVP(Resource Reservation protocol) Advantages :(1) can manage and control the network capital(2) for each outgoing traffic can be deployed with different policies(3) is based on each type of traffic definition(4) based on QOSper stream, rather than per packet (5) The established s

This article focuses on how cgroup controls the QoS of the blkio sub-system. First, let's look at the settings Blkio. Weight blkio. weight_device my understanding is that blkio. weight is the weight of the entire Io subsystem, while blkio. weight_device is the weight of a specific major: minor device. Blkio. Throttle. Limit blkio. Throttle. write_bps_device blkio. Throttle. Limit blkio. Throttle. write_iops_device the maximum number of read/write BP

Does anyone know about the QoS tc (trafficcontrol) command? -- Linux Enterprise Application-Linux server application information. For details, refer to the following section. Recently I am working on linux QoS and reading scripts on tc, but I have a lot of questions about this part. According to the document, for a network card, there are two queues, one is egress and the other is ingress. For egress, there

1. QoS modelBest Effort Service model (Best-effort)Integration Service Model (Integrated services)Differential service model (differentiated services)2. Differential service model structure3. Classification and markingTags can be marked with the high three-bit (IP priority) or high six-bit (DSCP) of the TOS in the IP header.On R1, the priority of ICMP traffic is set to 2, the DSCP value of the HTTP traffic is set to AF22, the other unmatched traffic p

1. Enable Qos:c6509n01 (config) #mls QoS2, write access to the list, matching to limit the IP (here you have to distinguish between the limit upload or download, I am limited to download):C6509n01 (config) #ip access-list extended Name (Access control List name)C6509n01 (config-ext-nacl) #permit IP host 192.168.0.3 anyC6509n01 (config-ext-nacl) #permit IP host 192.168.0.2 anyC6509n01 (config-ext-nacl) #permit IP host 192.168.0.1 anyC6509n01 (config-ext-nacl) #permit IP host 192.168.0.4 anyC6509n

This article explains the ioband mechanism. The ioband principle is simple: the ioband device sets many groups, each of which has its own weight and threshold value. The ioband driver controls the QoS of the IO requests of these groups. Ioband devices are controlled based on tokens and different tokens are allocated based on group weights. The policy also includes request-based and sector-based Token control. DM-ioband involves several important data

, the DBA will gradually increase the video bit rate. On the contrary, if DBA continuously detects packet loss, it will not adjust the video bit rate, but will continue the call. Therefore, DBA is suitable for packet loss environments caused by network overuse or throughput problems. When the systems of all parties involved in the call do not support LPR, you can use the video error concealment (PVEC) function. PVEC is an algorithm used for IP video quality of service (

Bcm56133 chip supports four QoS modes: Port-ID-based, MAC address-based, 802.1 p-based, and DiffServ-based priority settings. Registers based on 802.1 p and DiffServ priority settings are quickly found in register definitions;The Port-based priority setting register is in the 802.1Q VLAN section.. ConfigurationQoS pause enable register registers will be encountered during the configuration process, and later I will understand its role: (Before depart

Article title: LINUX route and QOS speed limit. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. I have been paying attention to and trying LINUX for a long time, but it is rarely used. I just need a vro in the unit, and I have an idle old host to improve my practical ability! There are a lot of mistakes in online a

1. Use Qos to limit the upload speed Step 1. Define the host range for which you want to limit the speedS3760> enS3760 # confS3760 (config) # access-list 101 permit ip host 192.168.1.101 any ---- Define the IP address for Speed LimitS3760 (config) # access-list 102 permit ip host 192.168.1.102 any Step 2. Create a rule class and apply the previously defined Host RangeS3760 (config) # class-map xiansu101 ---- create a class-map named xiansu101S3760 (co

Some enterprises want to configure specific users, such as special internal network users such as managers and directors) large bandwidth is provided, the internal network selects a specific WAN to access the external network, and the specific lines are left to specific users. The above functions can be achieved through QoS bandwidth management.The Qno xiaonuo router allows you to select a single IP address, a series of IP addresses, or an IP group of

address 13.1.1.1 255.255.255.0router OSPF 110Router-id 1.1.1.1Network 12.1.1.0 0.0.0.255 Area 0Network 13.1.1.0 0.0.0.255 Area 0R2 ConfigurationInterface serial0/0IP address 12.1.1.2 255.255.255.0Interface fastethernet1/0IP address 24.1.1.2 255.255.255.0router OSPF 110Router-id 2.2.2.2Network 12.1.1.0 0.0.0.255 Area 0Network 24.1.1.0 0.0.0.255 Area 0R3 ConfigurationInterface SERIAL0/1IP address 13.1.1.3 255.255.255.0Interface fastethernet1/0IP address 35.1.1.3 255.255.255.0router OSPF 110Router

/M00/7A/30/wKiom1aljN_h_64wAAGIjUzqhy8610.png "style=" float: none; "title=" Q34.png "alt=" Wkiom1aljn_h_64waagijuzqhy8610.png "/>CBWFQ: module-based weighted fair queue (with 64+1 class, can be divided into 64, all the remaining traffic is classified into 1 classes, for the default class, you can also do Wfq) to set the bandwidth for each class, pollingClass-map Match-all VOIPMatch IP RTP 16384 16383Policy-map CBWFQClass VOIPBandwidth Percent 50Class Class-defaultBandwidth Percent 30Interface s

Some enterprises have complicated network settings and do not want to change their routing devices. We also want to use smart QoS functions and behavior management of wayos. What should we do at this time? Tell you: the new version of wayos has a function called transparent bridge. This function is also explained by the Alliance, that is, as long as the wayos is directly connected to the network, let the traffic pass through from him. Other devices d