Big Buffer of Switch
|
|
- Piers Farmer
- 6 years ago
- Views:
Transcription
1 Big Buffer of Switch
2 Content Why Do We Need Big Buffer Arch of Switch Buffer How to Test Buffer 1
3 Why Do We Need Big Buffer When audience watch movies on the Internet, they are faced with the fact that the movies often suspends for seconds. If a big buffer is provided, audience will not sense what has happened. In Quality of Service (QoS) shaping, a big buffer can make traffic more even than a small buffer so that downstream devices can process traffic easily. In the data center environment, a big buffer can make data transfer faster and more smooth. Without a big buffer, packets are lost when traffic bursts, and mosaics appear on the image. Flow in STOR With a big buffer, packets are not lost when traffic bursts, and the image is clear and smooth. Flow out 2
4 Why Do We Need Big Buffer Fine-grained traffic management Level 1. Service-based CAR Level 2. VLAN-based CAR Three-class CAR: service + user + interface Level 3. Interface-based scheduling 3
5 Content 1 Why Do We Need Big Buffer 2 Arch of Switch Buffer 3 How to Test Buffer 4
6 Buffering Mechanism of a Common LPU Static Buffer A chip provides four types of interface: GE interface, 10GE interface, HG interface, and CPU interface. Static buffer is allocated on GE, 10GE, and HG interfaces using the same rules. This training document takes the GE interface as an example to introduce the static buffer allocation mechanism. There are eight queues (0-7) on a GE interface. The static buffer is allocated by queue which is the minimum unit. Each queue is allocated 24 cells, that is, approximately MB (24 x 128 bytes). The static buffer configured on the GE interface is the total of static buffer allocated on the eight queues, which is approximately MB (8 x MB). Different from the GE, 10GE, and HG interfaces, the CPU interface needs to process a certain number of important packets. Therefore, 72 cells (approximately MB) of static buffer are allocated to each queue on the CPU interface. The total static buffer for eight queues amounts to approximately MB. 5
7 Buffering Mechanism of a Common LPU Static Buffer Next, let's move on to calculation of the buffer allocated to the entire chip. This slide takes the dual-chip device for example. If the 24 interfaces on the front panel and interfaces on the rear card belong to the first chip. The 24 interfaces on the rear panel and four 10GE interfaces belong to the second chip. The two chips are connected using four HG interfaces. Assuming the rear cards on the first chip are two 8 x GE cards, interfaces on a chip are 24 fixed interfaces, 16 GE interfaces, four HG interfaces, and one CPU interface. The first chip has two rear cards, and each rear card has eight GE interfaces, so there are a total of 16 GE interfaces. Based on the calculation method in the preceding slide, the total static buffer is calculated using the formula: ( ) x 8 x 24 x x 72 x 128 = MB. 6
8 Buffering Mechanism of a Common LPU Dynamic Buffer Assuming the dynamic buffer threshold (DBT) of each interface is X, the available buffer is A (the difference between the total buffer and the total static buffer, namely, 4 MB MB = MB), and the parameter of the dynamic buffer is a, the rules for allocating buffer to the interface comply with the following formulas: X α (A - X), which indicates that the DBT must be smaller than the product of a and the available buffer. X α x A/(1 + α) To ensure that buffer is allocated to each interface when the interface is congested or blocked, set the value of a to 1. Then, a single interface's DBT is a half of A. If there are two interfaces, the following formulas must be complied with: X α (A - X -Y) X α (A - X -Y) X + Y 2α x A/(1 + 2α) X + Y 2A/3 As shown in these formulas, when the number of interfaces that occupy buffer increases, the available buffer gets closer to the actual value. 7
9 Buffering Mechanism of a Common LPU Dynamic Buffer The buffer space that is supported by current switches is 4 MB in total. Therefore, the dynamic buffer is MB (4 MB MB). Original Mode: The value of a is set to 1/16. The maximum of dynamic buffer that each interface can occupy is calculated using the formula: X = (1/16)/(1 + 1/16) x = MB. After the MMU value is increased, the value of a is set to 2. The maximum of dynamic buffer that each interface can occupy is calculated using the formula: X = 2/(1 + 2) x MB = 1.89 MB. In burst traffic buffering mode, the value of a is set to 8. The maximum of dynamic buffer that each interface can occupy is calculated using the formula: X = 4/(1 + 4) x MB = 2.27 MB. It is obvious that when the number of interfaces that occupy buffer becomes larger, the available buffer gets closer to the actual value. It can be seen from the preceding formulas that even in burst traffic buffering mode, a single interface's buffer is still small and cannot meet the requirement for a delay of less than 200 ms. 8
10 Methods of Implementing Big Buffer on Frame Switches Intelligent Buffer 10 Gbit/s Private Field 1.6 Mbit/s Public Field 9.9 Gbit/s External buffer capacity: The rate on the backplane is 4 x 12 Gbit/s. When traffic bursts, the backplane sends the traffic to one of the 48 GE interfaces. The other 47 GE interfaces need to buffer the rest of traffic. Switch reliability requires the buffering time be 200 ms and the buffer capacity be 9.4 GB. In addition, 10 Gbit/s external DDR3 modules meet the design requirement. That is, the external buffer supports the downstream buffering time of 200 ms on a single interface. Maximum buffering time of a single interface = Buffer capacity/interface rate 10 GB/1 Gbit/s = 10s To improve security of interface buffer, private fields need to be configured in data packets. Among 10 GB of traffic, the maximum private field of a single interface occupies 1.6 MB, and the public field occupies 9.9 GB. Therefore, the maximum buffering time of a single interface is approximately 9.9s. 9
11 Specifications for the LPUs with Big Buffer on Frame Switches 48GE optical big buffer Item Maximum power consumption MAC IP ARP ACL MPLS VPN Specifications 48GE electrical interface: 160 W 48GE optical interface: 185 W 128 kbit/s IPv4: 128 kbit/s, IPv6: 64 kbit/s 16 kbit/s Ingress: 38 kbit/s MPLS L2 VPN, MPLS L3 VPN 48GE electrical big buffer Super large buffer: 1.25 GB data buffer of a single interface with the buffering time of 200 ms, which prevents packet loss caused by traffic burst. 10
12 Content Why Do We Need Big Buffer Arch of Switch Buffer How to Test Buffer 11
13 Test Buffer DUT_1 Port-3 Port-1 Port-2 Tport-1 Tester Tport-2 Tport-3 1. Establish the test environment according to the preceding diagram. 2. Tport2 sends data flows to Tport1 with no packet loss. At the same time, Tport3 sends some packets to Tport1. 3. Stop transmitting all data flows at the same time. Compare the number of sent packets of Tport2 and Tport3 with the number of received packets of Tport1. 4. If received packets are more than packets, decrease the number of burst packets on Tport3 and repeat the second process until the number of sent packets is equal to that of received packets. 5. At that time, the burst traffic is buffered in the switch. The number of burst packets is set to m, and the packet size is set to n. buffer = m x n 12
14 Test Buffer For example, the Quality of Experience (QoE) line card test result is as follows: Each interface has 25 MB of buffer space, and the total slot buffer is 1.2 GB. 25 MB x 8/1 Gbit/s = 200 ms Each interface is enabled with a delay of 200 ms, so that the movie will not suspend for seconds. 13
15 HUAWEI ENTERPRISE ICT SOLUTIONS A BETTER WAY Copyright 2012 Huawei Technologies Co., Ltd. All Rights Reserved. The information in this document may contain predictive statements including, without limitation, statements regarding the future financial and operating results, future product portfolio, new technology, etc. There are a number of factors that could cause actual results and developments to differ materially from those expressed or implied in the predictive statements. Therefore, such information is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the information at any time without notice.
Configuring PFC QoS CHAPTER
38 CHAPTER This chapter describes how to configure quality of service (QoS) as implemented on the Policy Feature Card 3B (PFC3B) on the Supervisor Engine 32 PISA. Note For complete syntax and usage information
More informationATN 910C Product Brochure
ATN 910C Product Brochure 产品外观 Product appearance ATN 910C-A 4x10GE(SFP+)+8xFE/GE/10GE(SFP/SFP+)+ 16xFE/GE(SFP) ATN 910C-B 4x10GE(SFP+)+8xFE/GE/10GE(SFP/SFP+)+8xFE/ GE(SFP)+8xFE/GE(RJ-45) ATN 910C-D 4x10GE(SFP+)+8xFE/GE/10GE(SFP/SFP+)+
More informationContents. QoS overview 1
Contents QoS overview 1 QoS service models 1 Best-effort service model 1 IntServ model 1 DiffServ model 1 QoS techniques overview 1 Deploying QoS in a network 2 QoS processing flow in a device 2 Configuring
More informationCloudEngine 6800 Series Data Center Switches
Series Data Center Switches Series Data Center Switches Product Overview Huawei CloudEngine series (CE for short) switches are nextgeneration 10G Ethernet switches designed for data centers and highend
More informationConfiguring QoS CHAPTER
CHAPTER 34 This chapter describes how to use different methods to configure quality of service (QoS) on the Catalyst 3750 Metro switch. With QoS, you can provide preferential treatment to certain types
More informationHuawei CloudFabric Solution Optimized for High-Availability/Hyperscale/HPC Environments
Huawei CloudFabric Solution Optimized for High-Availability/Hyperscale/HPC Environments CloudFabric Solution Optimized for High-Availability/Hyperscale/HPC Environments Internet Finance HPC VPC Industry
More informationPUSHING THE LIMITS, A PERSPECTIVE ON ROUTER ARCHITECTURE CHALLENGES
PUSHING THE LIMITS, A PERSPECTIVE ON ROUTER ARCHITECTURE CHALLENGES Greg Hankins APRICOT 2012 2012 Brocade Communications Systems, Inc. 2012/02/28 Lookup Capacity and Forwarding
More informationHuawei Enterprise S2700 Series Switches
Huawei Enterprise S2700 Series Switches 2 Product Overview The S2700 series enterprise switches (S2700 for short) are next-generation energy-saving M Ethernet intelligent switches. The S2700 utilizes cutting-edge
More informationTable of Contents Chapter 1 Link Aggregation Configuration
Table of Contents Table of Contents... 1-1 1.1 Over... 1-1 1.2 LACP... 1-2 1.3 Link Aggregation Types... 1-2 1.3.1 Manual Aggregation and Static LACP Aggregation... 1-2 1.3.2 Dynamic LACP Aggregation...
More informationH3C S9500 QoS Technology White Paper
H3C Key words: QoS, quality of service Abstract: The Ethernet technology is widely applied currently. At present, Ethernet is the leading technology in various independent local area networks (LANs), and
More informationQuidway S2700 Series Enterprise Switches
Quidway S2700 Series Enterprise Switches Quidway S2700 Series Enterprise Switches Product Overview The Quidway S2700 enterprise switches (S2700 for short) are next-generation energy-saving 100M Ethernet
More informationThe First Aggregation OLT for Vertical Industry Huawei SmartAX MA5600T Series Product
The First Aggregation OLT for Vertical Industry Huawei SmartAX MA5600T Series Product HUAWEI TECHNOLOGIES CO., LTD. SmartAX MA5600T As the first aggregation OLT in the industry, The SmartAX MA5600T series
More informationHuawei AR1000V Brochure
Huawei AR1000V Brochure AR1000V Brochure AR1000V Brochure Huawei AR1000V is a virtual router based on Network Functions Virtualization (NFV). As a software product, the AR1000V uses the x86 server hardware
More informationCloudEngine 1800V Virtual Switch
CloudEngine 1800V Virtual Switch CloudEngine 1800V Virtual Switch Product Overview Huawei CloudEngine 1800V (CE1800V) is a distributed virtual switch designed for virtualized environments in cloud data
More informationHuawei Enterprise S2700 Series Switches
2 Product Overview The S2700 series enterprise switches (S2700s) are next-generation energy-saving intelligent 100M Ethernet switches. The S2700 utilizes cutting-edge switching technologies and Huawei
More informationS7500 series Core Routing Switches. Datasheet. Shenzhen TG-NET Botone Technology Co., Ltd.
S7500 series Core Routing Switches Datasheet Shenzhen TG-NET Botone Technology Co., Ltd. Overview The S7500 series switches are high-end smart routing switches designed for nextgeneration enterprise networks.
More informationCloudEngine 6810 Series Data Center Switches
CloudEngine 6810 Series Data Center Switches CloudEngine 6810 Series Data Center Switches Product Overview Huawei CloudEngine 6810 (CE6810 for short) series switches are next-generation 10G Ethernet switches
More informationHuawei S2300 Series Switches Product Brochure
Huawei S2300 Series Switches Product Brochure S2300 Series Enterprise Switches Product Overview S2300 switches (S2300 for short) are next-generation Ethernet intelligent switches developed by Huawei to
More informationTOC: Switching & Forwarding
TOC: Switching & Forwarding Why? Switching Techniques Switch Characteristics Switch Examples Switch Architectures Summary TOC Switching Why? Direct vs. Switched Networks: n links Single link Direct Network
More informationConfiguring QoS. Finding Feature Information. Prerequisites for QoS
Finding Feature Information, page 1 Prerequisites for QoS, page 1 Restrictions for QoS, page 3 Information About QoS, page 4 How to Configure QoS, page 28 Monitoring Standard QoS, page 80 Configuration
More informationQuality of Service (QoS)
Quality of Service (QoS) The Internet was originally designed for best-effort service without guarantee of predictable performance. Best-effort service is often sufficient for a traffic that is not sensitive
More informationPFC QoS. Prerequisites for PFC QoS. Restrictions for PFC QoS CHAPTER
58 CHAPTER Prerequisites for, page 58- Restrictions for, page 58- Information about, page 58-7 Default Settings for, page 58-33 How to Configure, page 58-56 Common QoS Scenarios, page 58- Glossary, page
More informationConfiguring Modular QoS Congestion Avoidance
Congestion avoidance techniques monitor traffic flow in an effort to anticipate and avoid congestion at common network bottlenecks. Avoidance techniques are implemented before congestion occurs as compared
More informationTable of Contents 1 QoS Overview QoS Policy Configuration Priority Mapping Configuration 3-1
Table of Contents 1 QoS Overview 1-1 Introduction to QoS 1-1 Networks Without QoS Guarantee 1-1 QoS Requirements of New Applications 1-1 Congestion: Causes, Impacts, and Countermeasures 1-2 Causes 1-2
More informationConfiguring global CAR 73 Overview 73 Configuring aggregate CAR 73 Configuration procedure 73 Configuration example 73
Contents QoS overview 1 Introduction to QoS 1 QoS service models 1 Best-effort service model 1 IntServ model 1 DiffServ model 2 QoS techniques overview 2 Deploying QoS in a network 2 QoS processing flow
More informationNE20E-S Series Network Service Processor
NE20E-S Series Network Service Processor Product Overview The Huawei NE20E-S Series Network Services Processors (NSPs) handle all the network data-plane traffic-processing tasks of Huawei NE20E-S series
More informationS1700 Series Switches
S1700 Series Switches S1700 Series Switches Product Overview The S1700 series enterprise switches (S1700s) are next-generation energy-saving Ethernet access switches. The S1700 uses high-performance hardware,
More informationHP 5130 EI Switch Series
HP 5130 EI Switch Series ACL and QoS Configuration Guide Part number: 5998-5471a Software version: Release 31xx Document version: 6W100-20150731 Legal and notice information Copyright 2015 Hewlett-Packard
More informationTable of Contents. Chapter 1 Port Configuration Overview
Table of Contents Table of Contents Chapter 1 Port Configuration Overview... 1-1 Chapter 2 Ethernet Port Configuration... 2-1 2.1 Ethernet Port Overview... 2-1 2.2 Ethernet Port Configuration... 2-1 2.2.1
More informationHuawei Technologies engaged Miercom to evaluate the S2700-EI
Lab Testing Summary Report March 2012 Report SR120126B Product Category: Enterprise Layer 2 Switch Vendor Tested: Key findings and conclusions: Huawei S2700-EI is resilient and robust to meet enterprise
More informationS1700 Series Switches
S1700 Series Switches S1700 Series Switches Product Overview The S1700 series enterprise switches (S1700) are next-generation energy-saving Ethernet access switches. The S1700 uses high-performance hardware,
More informationArista EOS Central Drop Counters
Arista EOS Central Drop Counters eos.arista.com /eos-4-15-3f/drop-counters/ With this feature, user can fetch various internal hardware info from each switch and isolate the switch or fabric card or SerDes
More informationdifferent problems from other networks ITU-T specified restricted initial set Limited number of overhead bits ATM forum Traffic Management
Traffic and Congestion Management in ATM 3BA33 David Lewis 3BA33 D.Lewis 2007 1 Traffic Control Objectives Optimise usage of network resources Network is a shared resource Over-utilisation -> congestion
More informationHUAWEI Tecal X8000 High-Density Rack Server
HUAWEI Tecal X8000 High-Density Rack Server Professional Trusted Future-oriented HUAWEI TECHNOLOGIES CO., LTD. HUAWEI Tecal X8000 High-Density Rack Server (X8000) High density and innovative architecture
More informationArista 7010 Series: Q&A
7010 Series: Q&A Document Arista 7010 Series: Q&A Product Overview What is the 7010 Series? The Arista 7010 Series are a family of purpose built high performance and power efficient fixed configuration
More informationConfiguring QoS CHAPTER
CHAPTER 37 This chapter describes how to configure quality of service (QoS) by using automatic QoS (auto-qos) commands or by using standard QoS commands on the Catalyst 3750-E or 3560-E switch. With QoS,
More informationConfiguring priority marking 63 Priority marking overview 63 Configuring priority marking 63 Priority marking configuration example 64
Contents QoS overview 1 Introduction to QoS 1 QoS service models 1 Best-effort service model 1 IntServ model 1 DiffServ model 2 QoS techniques overview 2 Deploying QoS in a network 2 QoS processing flow
More informationQuality of Service Commands
Quality of Service Commands This module lists quality of service (QoS) commands in alphabetical order. To use commands of this module, you must be in a user group associated with a task group that includes
More informationCopyright Huawei Technologies Co., Ltd All rights reserved. Trademark Notice General Disclaimer
Copyright Huawei Technologies Co., Ltd. 2011. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Huawei Technologies
More informationHuawei Enterprise Wireless Access Controller Brochure
Enterprise Wireless Access Controller Brochure 2 Enterprise Wireless Access Controller Brochure 's third-generation WLAN access controller (AC) products provide comprehensive service support for WLANs
More informationmls qos (global configuration mode)
mls qos (global configuration mode) mls qos (global configuration mode) To enable the quality of service (QoS) functionality globally, use the mls qos command in global configuration mode. To disable the
More informationHP 5920 & 5900 Switch Series
HP 5920 & 5900 Switch Series MCE Configuration Guide Part number: 5998-2896 Software version: Release2207 Document version: 6W100-20121130 Legal and notice information Copyright 2012 Hewlett-Packard Development
More informationHUAWEI NetEngine5000E Core Router V800R002C01. Feature Description - QoS. Issue 01 Date HUAWEI TECHNOLOGIES CO., LTD.
V800R002C01 Issue 01 Date 2011-10-15 HUAWEI TECHNOLOGIES CO., LTD. 2011. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written
More informationQoS Technology White Paper
QoS Technology White Paper Keywords: Traffic classification, congestion management, congestion avoidance, precedence, differentiated services Abstract: This document describes the QoS features and related
More informationContents. Introduction. Background Information. Terminology. ACL TCAM Regions
Contents Introduction Background Information Terminology ACL TCAM Regions Defaults Nexus 9500 Series TCAM Allocation Nexus 9300 Series TCAM Allocation Configuration Example Scenario Verification Commands
More informationDatasheet. comboo GE network. Highlights. Network Security. control, & Management. Advanced QoS. U.S.A. Headquarters.
ISCOM2128EA-MAA Enhanced L2 Carrier Ethernet Access Switch ISCOM2128EA-MAA is designed for Carrier Ethernet access portfolio, which provides cost-effective solutions for campus, enterprise, and residential
More informationCubro Packetmaster EX48600
Cubro Packetmaster EX48600 PRODUCT REVIEW Network Packet Broker (NPB) At a glance Definition A network packet broker (NPB) is a tool that receives data from number of network links; duplicates, aggregates
More informationConfiguring Quality of Service
CHAPTER 25 QoS refers to the ability of a network to provide improved service to selected network traffic over various underlying technologies including Frame Relay, ATM, Ethernet and 802.1 networks, SONET,
More informationConfiguring QoS. Understanding QoS CHAPTER
29 CHAPTER This chapter describes how to configure quality of service (QoS) by using automatic QoS (auto-qos) commands or by using standard QoS commands on the Catalyst 3750 switch. With QoS, you can provide
More informationUnderstanding How Routing Updates and Layer 2 Control Packets Are Queued on an Interface with a QoS Service Policy
Understanding How Routing Updates and Layer 2 Control Packets Are Queued on an Interface with a QoS Service Policy Document ID: 18664 Contents Introduction Prerequisites Requirements Components Used Conventions
More informationHUAWEI TECHNOLOGIES CO., LTD. HUAWEI FusionServer X6000 High-Density Server
HUAWEI TECHNOLOGIES CO., LTD. HUAWEI FusionServer X6000 High-Density Server HUAWEI FusionServer X6000 High-Density Server High computing density The X6000 is 2U high and features a centralized power supply
More informationNetEngine9000 Series Converged Core Router
NetEngine9000 Series Converged Core Router Huawei NetEngine9000 Series Convergence Core Routers Product Overview The NetEngine9000 (NE9000) series are high-performance, next-generation converged backbone
More informationHighlights. Datasheet ISCOM2128EA-MA. comboo GE network. Network Security. control, Aggregation. & Management. Advanced QoS. Support IGMP.
ISCOM2110EA-MAA Enhanced L2 Carrier Ethernet Access Switch ISCOM2110EA-MAA is designed for Carrier Ethernet access portfolio, which provides cost-effective solutions for campus, enterprise, and residential
More informationCISCO CATALYST 4500-X SERIES FIXED 10 GIGABIT ETHERNET AGGREGATION SWITCH DATA SHEET
CISCO CATALYST 4500-X SERIES FIXED 10 GIGABIT ETHERNET AGGREGATION SWITCH DATA SHEET ROUTER-SWITCH.COM Leading Network Hardware Supplier CONTENT Overview...2 Appearance... 2 Key Features and Benefits...2
More informationAccelerating Metro. Huawei MPLS-TP Solution HUAWEI TECHNOLOGIES CO., LTD.
Accelerating Metro Huawei MPLS-TP Solution HUAWEI TECHNOLOGIES CO., LTD. The metro transport network faces the special challenges as follows. Complex services: Multi-services coexist such as multiple
More informationBefore configuring standard QoS, you must have a thorough understanding of these items:
Finding Feature Information, page 1 Prerequisites for QoS, page 1 QoS Components, page 2 QoS Terminology, page 3 Information About QoS, page 3 Restrictions for QoS on Wired Targets, page 41 Restrictions
More informationCN-100 Network Analyzer Product Overview
CN-100 Network Analyzer Product Overview CN-100 network analyzers offer an extremely powerful yet cost effective solution for today s complex networking requirements. Test Ethernet or ATM networks with
More informationTable of Contents 1 QoS Overview QoS Policy Configuration Priority Mapping Configuration 3-1
Table of Contents 1 QoS Overview 1-1 Introduction to QoS 1-1 Introduction to QoS Service Models 1-1 Best-Effort Service Model 1-1 IntServ Service Model 1-2 DiffServ Service Model 1-2 QoS Techniques Overview
More informationLine Cards and Physical Layer Interface Modules Overview, page 1
Line Cards and Physical Layer Interface Modules Overview This chapter describes the modular services cards (MSCs), forwarding processor (FP) cards, label switch processor (LSP) cards, and associated physical
More information720Gbps Switching Capacity
224 GPON Ports Support 28672 ONTs V1.1.1 ITU-T G.988 GPON ONT 2.5Gbps Downstream 720Gbps Switching Capacity Dual Power Supply 8*10GE Uplink Port SGT9700B 224 Port GPON OLT: SGT9700B 10U chassis is high
More informationHP 5920 & 5900 Switch Series
HP 5920 & 5900 Switch Series ACL and QoS Configuration Guide Part number: 5998-2897 Software version: Release2207 Document version: 6W100-20121130 Legal and notice information Copyright 2012 Hewlett-Packard
More informationHUAWEI USG6000 Series Next-Generation Firewall Technical White Paper VPN HUAWEI TECHNOLOGIES CO., LTD. Issue 1.1. Date
HUAWEI USG6000 Series Next-Generation Firewall Technical White Paper VPN Issue 1.1 Date 2014-03-14 HUAWEI TECHNOLOGIES CO., LTD. 2014. All rights reserved. No part of this document may be reproduced or
More informationStein Gjessing Simula Research Laboratory
Rate Control in RPR Lessons Learned from Java Simulations Stein Gjessing Simula Research Laboratory Contents Granularity of rate control Fine grained vs bursty 1. Simple version 2. Multiple (N) VOQs /
More information100 GBE AND BEYOND. Diagram courtesy of the CFP MSA Brocade Communications Systems, Inc. v /11/21
100 GBE AND BEYOND 2011 Brocade Communications Systems, Inc. Diagram courtesy of the CFP MSA. v1.4 2011/11/21 Current State of the Industry 10 Electrical Fundamental 1 st generation technology constraints
More informationConfiguring QoS CHAPTER
CHAPTER 36 This chapter describes how to configure quality of service (QoS) by using automatic QoS (auto-qos) commands or by using standard QoS commands on the Catalyst 3750 switch. With QoS, you can provide
More informationTOC: Switching & Forwarding
TOC: Switching & Forwarding Why? Switching Techniques Switch Characteristics Switch Examples Switch Architectures Summary Why? Direct vs. Switched Networks: Single link Switches Direct Network Limitations:
More informationRouters: Forwarding EECS 122: Lecture 13
Routers: Forwarding EECS 122: Lecture 13 epartment of Electrical Engineering and Computer Sciences University of California Berkeley Router Architecture Overview Two key router functions: run routing algorithms/protocol
More informationHighlights. Datasheet ISCOM2110EA-MA. comboo GE network. Network Security. control, & Management. Advanced QoS. U.S.A.
ISCOM2110EA-MAA Enhanced L2 Carrier Ethernet Access Switch ISCOM2110EA-MAA is designed for Carrier Ethernet access portfolio, which provides cost-effective solutions for campus, enterprise, and residential
More informationGigabit Ethernet XMVR LAN Services Modules
Gigabit Ethernet XMVR LAN Services Modules Ixia's Gigabit Ethernet XMVR LAN Services Modules (LSMs) offer Layer 2-3 network testing functionality in a single test system. Each test port supports wire-speed
More informationHP FlexFabric 5930 Switch Series
HP FlexFabric 5930 Switch Series ACL and QoS Configuration Guide Part number: 5998-7761a Software version: Release 241x Document version: 6W102-20151210 Legal and notice information Copyright 2015 Hewlett-Packard
More informationH3C S9500 Series Routing Switches
Command Manual Hangzhou H3C Technologies Co., Ltd. http://www.h3c.com Manual Version: T2-08194S-20081225-C-1.24 Product Version: S9500-CMW310-R1648 Copyright 2007-2008, Hangzhou H3C Technologies Co., Ltd.
More informationGigabit Ethernet XMVR LAN Services Modules
Gigabit Ethernet XMVR LAN Services Modules Ixia's Gigabit Ethernet XMVR LAN Services Modules (LSMs) offer Layer 2-3 network testing functionality in a single test system. Each test port supports wire-speed
More informationModular Policy Framework. Class Maps SECTION 4. Advanced Configuration
[ 59 ] Section 4: We have now covered the basic configuration and delved into AAA services on the ASA. In this section, we cover some of the more advanced features of the ASA that break it away from a
More informationCisco ASR 1000 Series Aggregation Services Routers: QoS Architecture and Solutions
Cisco ASR 1000 Series Aggregation Services Routers: QoS Architecture and Solutions Introduction Much more bandwidth is available now than during the times of 300-bps modems, but the same business principles
More informationBarcelona: a Fibre Channel Switch SoC for Enterprise SANs Nital P. Patwa Hardware Engineering Manager/Technical Leader
Barcelona: a Fibre Channel Switch SoC for Enterprise SANs Nital P. Patwa Hardware Engineering Manager/Technical Leader 1 Agenda Introduction to Fibre Channel Switching in Enterprise SANs Barcelona Switch-On-a-Chip
More informationHuawei Enterprise AP Series ac Brochure
Enterprise AP Series 802.11ac Brochure 01 Enterprise AP Series 802.11ac Brochure 1 Overview Release of 802.11ac standards has driven wireless technologies to the era of GE Wi-Fi. Enterprise Wi-Fi networks
More informationQoS: Time-Based Thresholds for WRED and Queue Limit
QoS: Time-Based Thresholds for WRED and Queue Limit The QoS: Time-Based Thresholds for WRED and Queue Limit feature allows you to specify the Weighted Random Early Detection (WRED) minimum and maximum
More informationModel T4050a L2 & L3 Gigabit Ethernet Switch PICMG2.16 & Vita31.1
Model T4050a L2 & L3 Gigabit Ethernet Switch PICMG2.16 & Vita31.1 24 Gigabit Ethernet ports with full wire speed switching capability up to 37Mpps 24 10/100/1000 Ethernet ports Key features of the T4050a:
More informationISCOM6820-GP GPON OLT
ISCOM6820-GP GPON OLT Introduction The ISCOM6820-GP is a next-generation, compact, small-capacity, 2U GPON OLT with a card plug-in design intended for industrial and rural networking. It provides abundant
More informationTechnology Overview. Frequently Asked Questions: MX Series 3D Universal Edge Routers Quality of Service. Published:
Technology Overview Frequently Asked Questions: MX Series 3D Universal Edge Routers Quality of Service Published: 2014-01-10 Juniper Networks, Inc. 1194 North Mathilda Avenue Sunnyvale, California 94089
More informationGIGABIT ETHERNET XMVR LAN SERVICES MODULES
GIGABIT ETHERNET XMVR LAN SERVICES MODULES DATA SHEET Ixia's Gigabit Ethernet XMVR LAN Services Modules (LSMs) offer Layer 2-3 network testing functionality in a single test system. Each test port supports
More informationQoS Configuration. Overview. Introduction to QoS. QoS Policy. Class. Traffic behavior
Table of Contents QoS Configuration 1 Overview 1 Introduction to QoS 1 QoS Policy 1 Traffic Policing 2 Congestion Management 3 Line Rate 9 Configuring a QoS Policy 9 Configuration Task List 9 Configuring
More informationHP A5820X & A5800 Switch Series MPLS. Configuration Guide. Abstract
HP A5820X & A5800 Switch Series MPLS Configuration Guide Abstract This document describes the software features for the HP 5820X & 5800 Series products and guides you through the software configuration
More informationQuidway S5300 Series Gigabit Switches
Quidway S5300 Series Gigabit Switches 1 Quidway S5300 Series Gigabit Switches Quidway S5300 Series Gigabit Switches Product Overview Quidway S5300 series gigabit switches (hereinafter referred to as the
More informationCisco - Catalyst G-L3 Series Switches and WS-X4232-L3 Layer 3 Modules QoS FAQ
Page 1 of 7 Catalyst G-L3 Series Switches and WS-X4232-L3 Layer 3 Modules QoS FAQ Document ID: 19641 Questions Introduction Which QoS features do the Layer 3 (L3) Catalyst switches support? What is the
More informationConfiguring QoS. Finding Feature Information. Prerequisites for QoS. General QoS Guidelines
Finding Feature Information, on page 1 Prerequisites for QoS, on page 1 Restrictions for QoS, on page 2 Information About QoS, on page 2 How to Configure QoS, on page 10 Monitoring Standard QoS, on page
More informationQuality of Service. Understanding Quality of Service
The following sections describe support for features on the Cisco ASR 920 Series Router. Understanding, page 1 Configuring, page 2 Global QoS Limitations, page 2 Classification, page 3 Marking, page 6
More informationNetwork Protocols - Revision
Network Protocols - Revision Luke Anderson luke@lukeanderson.com.au 18 th May 2018 University Of Sydney Overview 1. The Layers 1.1 OSI Model 1.2 Layer 1: Physical 1.3 Layer 2: Data Link MAC Addresses 1.4
More informationOperation Manual MCE H3C S3610&S5510 Series Ethernet Switches. Table of Contents
Table of Contents Table of Contents Chapter 1 MCE Overview... 1-1 1.1 MCE Overview... 1-1 1.1.1 Introduction to BGP/MPLS VPN... 1-1 1.1.2 BGP/MPLS VPN Concepts... 1-2 1.1.3 Introduction to MCE... 1-5 1.1.4
More informationHuawei Technologies engaged Miercom to evaluate the S12700
Key findings and conclusions: Huawei S12708 agile switch demonstrates 100% line rate throughput with 384 10GE ports in full line rate throughput tests Lab Testing Summary Report August 2013 Report SR130801
More informationConfiguring Quality of Service
CHAPTER 13 This chapter describes the Quality of Service (QoS) features built into your ML-Series card and how to map QoS scheduling at both the system and interface levels. This chapter contains the following
More informationConfiguring Quality of Service
This chapter describes the Quality of Service and procedures to configure Quality of Service. Introduction to Quality of Service, page 1 CPT System QoS, page 4 Ingress QoS Functions, page 7 Egress QoS
More informationHP Switch Series
HP 10500 Switch Series ACL and QoS Configuration Guide Part number: 5998-5230 Software version: Release 2111P01 and later Document version: 6W101-20140331 Legal and notice information Copyright 2014 Hewlett-Packard
More informationConfiguring Quality of Service
3 CHAPTER This chapter describes how to configure quality of service (QoS) by using automatic QoS (auto-qos) commands or by using standard QoS commands on a Catalyst 45 series switch. It also describes
More informationArista 7170 series: Q&A
Arista 7170 series: Q&A Product Overview What are the 7170 series? The Arista 7170 Series are purpose built multifunctional programmable 100GbE systems built for the highest performance environments and
More informationHuawei Enterprise S6700 Series 10G Switches
Huawei Enterprise 2 Product Overview The S6700 series switches (S6700 for short) are next-generation 10G case-shaped switches. It can function as an access switch in an Internet data center (IDC) or a
More informationS9700 Core Routing Switch V200R001C00. Configuration Guide - EPON. Issue 01 Date HUAWEI TECHNOLOGIES CO., LTD.
V200R001C00 Issue 01 Date 2012-03-15 HUAWEI TECHNOLOGIES CO., LTD. 2012. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written
More informationApplying QoS Features Using the MQC
QoS: Modular QoS Command-Line Interface Configuration Guide, Cisco IOS XE Release 3S (Cisco ASR 900 Series) First Published: November 30, 2012 Last Modified: March 31, 2014 This chapter discusses the Modular
More information2014 年 3 月 10 日星期一. Huawei Cloud Fabric Data Center Network Solution
2014 年 3 月 10 日星期一 Huawei Cloud Fabric Data Center Network Solution Challenges to Data Center Network Prevailing Big Data Growing Virtualization SDN: Accelerates Internet Service Innovation Volume Velocity
More informationForwarding Architecture
Forwarding Architecture Brighten Godfrey CS 538 February 14 2018 slides 2010-2018 by Brighten Godfrey unless otherwise noted Building a fast router Partridge: 50 Gb/sec router A fast IP router well, fast
More information