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1. Introduction Weighted Random Early Detection (WRED) is a congestion avoidance QoS mechanism that randomly drops packets before the queue is full, helping to prevent global TCP synchronization and optimize network performance. 📌 Key Benefits of WRED:✅ Prevents queue tail drops, reducing congestion✅ Improves TCP traffic performance✅ Differentiates traffic by priority levels✅ Works best in
1. Introduction Traffic policing is a QoS mechanism that limits the rate of traffic by dropping or marking excess packets when the defined limit is exceeded. Unlike traffic shaping, which buffers excess traffic, policing discards or reclassifies packets immediately. 📌 Key Benefits of Traffic Policing:✅ Enforces bandwidth limits on applications/users✅ Prevents network abuse (e.g., users
1. Introduction Traffic shaping is a QoS mechanism that controls the rate of outbound traffic to prevent network congestion and packet loss. It smooths traffic bursts by buffering and delaying packets to maintain a steady transmission rate. 📌 Key Benefits of Traffic Shaping: ✅ Prevents network congestion✅ Ensures consistent bandwidth allocation✅ Helps with Service Level
1. Introduction The QoS Trust Boundary defines where and how QoS markings (such as DSCP or CoS) are trusted, modified, or discarded in a network. It ensures that only trusted devices (like IP phones or network switches) can set QoS values, while preventing unauthorized or misconfigured endpoints from affecting network performance. 2. Why is the
1. Introduction Quality of Service (QoS) ensures that critical traffic like VoIP, video streaming, and business applications get higher priority over less important traffic like bulk data transfers or web browsing. Key Concepts 2. QoS Classification What is Classification? Classification identifies and groups network traffic based on parameters such as:✅ Source/Destination IP or Port✅ Application
1. Introduction In Quality of Service (QoS), traffic is classified and prioritized to ensure better performance for critical applications. Two common packet marking mechanisms used in QoS are: These values are set in the Type of Service (ToS) byte in the IP header to indicate priority levels. 2. IP Precedence (Legacy) IP Precedence Binary Priority
What is QoS? Quality of Service (QoS) is a set of technologies and techniques used in networking to manage and prioritize traffic, ensuring efficient data transmission, reduced latency, and improved performance for critical applications. Why is QoS Important? Without QoS, all network traffic is treated equally, which can lead to:✅ Poor VoIP call quality (jitter,
Power over Ethernet (PoE) allows network cables to carry both data and electrical power to devices like IP phones, wireless access points, and security cameras, eliminating the need for separate power adapters. PoE Standards Standard Max Power per Port Devices Supported 802.3af (PoE) 15.4W Phones, small APs 802.3at (PoE+) 30W High-power APs, cameras 802.3bt (PoE++)
Troubleshooting Cisco switch interface errors requires a structured approach to diagnose and resolve issues efficiently. Here’s a step-by-step guide: 1. Check Interface Status Run: Switch#show interfaces status If the interface is down, enable it: Switch#conf tinterface <interface_id>no shutdownexit 2. Verify Cable and Physical Connection 3. Check Interface Errors Run: Switch#show interfaces <interface_id> Look for: 4.
This guide covers hardware & VMware prerequisites, setting up EVE-NG, and installing Cisco SD-WAN components (vManage, vBond, vSmart, vEdge). 1. Prerequisites Hardware Requirements VMware Workstation Requirements 2. EVE-NG Setup on VMware If you haven’t installed EVE-NG yet, follow this guide:📌 How to Install EVE-NG on VMware Workstation Once EVE-NG is running, find its IP address
The Lazy Networker 