TAILIEUCHUNG - Lecture Medium-Sized Switched Network Construction - Chapter 3: Improving Performance with Spanning Tree

The following will be discussed in this chapter: A redundant switched topology includes multihomed switches and EtherChannel; a redundant switched topology causes looping issues such as broadcast storms; the STP establishes a loop-free network; the original STP has been enhanced by PVST+ and RSTP. | Medium-Sized Switched Network Construction Improving Performance with Spanning Tree Interconnection Technologies Technology Use Fast Ethernet Connects end-user devices to the access layer switch Gigabit Ethernet Connects access switch to distribution switch and high use servers to switches 10-Gigabit Ethernet Provides high-speed switch to switch links, backbones EtherChannel Provides high-speed switch to switch links, backbones with redundancy 142,142,149 Determining Equipment and Cabling Needs Each link provides adequate bandwidth for the total aggregate traffic over that link. Advantages of EtherChannel Logical aggregation of similar links between switches Load-shares across links Viewed as one logical port to STP Redundancy Redundant Topology Redundant topology eliminates single points of failure. Redundant topology causes broadcast storms, multiple frame copies, and MAC address table instability problems. Emphasize: Layer 2 has no mechanism (like a TTL) to stop loops. Station D sends a broadcast frame. Broadcast frames are flooded to all ports except the originating port. Broadcast Frames Broadcast Storms Host X sends a broadcast. Switches continue to propagate broadcast traffic over and over. Layer 3 of 3 Emphasize: Layer 2 has no TTL mechanism to stop looping frames. Multiple Frame Copies Host X sends a unicast frame to router Y. The MAC address of router Y has not been learned by either switch. Router Y will receive two copies of the same frame. Layer 2 of 2 Host X sends a unicast frame to router Y. The MAC address of router Y has not been learned by either switch. Switches A and B learn the MAC address of host X on port 1. The frame to router Y is flooded. Switches A and B incorrectly learn the MAC address of host X on port 2. MAC Database Instability Layer 2 of 2 Provides a loop-free redundant network topology by placing certain ports in the blocking state Published in the IEEE specification Enhanced with the Cisco PVST+ implementation .

• Quản trị mạng
• Switched Network
• Switched Network Construction
• Spanning Tree
• Interconnection technologies
• Redundant topology
• MAC Database
• Switched Networks
• Lecture Switched Networks
• LAN Design
• The Switched Environment
• Converged Network
• Frame Forwarding
• Poorly Designed Network
• Designing VLANs
• VTP server
• Configuring VLANs
• VLAN to VLAN
• Interface fastethernet
• Inter VLAN routing
• information technology
• international certification
• network cisco
• Administering
• cisco exam
• Multilayer Switched Networks
• Cisco Systems
• Network Devices
• computer
• businesses
• technology operational
• Cisco IOS
• Extending switched networks
• VLANs
• Switched reluctance motor
• Back stepping control
• Flux estimator
• Artificial neural networks
• Backpropogation algorithm
• Optical burst switched networks
• Optical circuit switching
• Optical packet switching
• Optical burst switching
• OBS network architecture
• Threshold based burst assembly techniques
• Signaling schemes
• Guide to Networks
• Network operating systems
• WAN essentials
• WAN topologies
• Public Switched Telephone Network
• Frame relay
• Computer Networks
• Network hardware
• The physical layer
• The public switched telephone network
• The network layer
• The theoretical basis for data communication
• Campus Network
• Internetworking
• cisco network
• Switching
• manage network
• CCNP Cisco
• The Need for Synchronisation
• Characterizing Synchronisation Quality
• Summary on Standards
• Mixed Technology Networks
• SDH and SONET Networks
• The Public Switched Telephony Network
• Global System for Mobile Communications
• Telecommunications
• digital cellular networks
• data transport
• GPRS
• modschemes
• passband
• demodulator
• LAN Switching
• LAN Wireless
• Implement VTP
• VTP Pruning
• VTP advertisements
• Implement Spanning Tree Protocols
• Converged Switched Network
• STP algorithm
• VLAN spanning
• CCNA Exploration 4
• Lecture CCNA Exploration 4
• Spanning Tree Protocols
• Lecture Advanced Computer Networks
• Advanced Computer Networks
• Bài giảng Mạng máy tính nâng cao
• Inter process communication
• Network architecture
• Lecture Wireless networks
• Wireless networks
• Bài giảng Mạng không dây
• Evolution of wireless networks
• Packet switched network
• Global information multimedia communication village
• CCNA
• semester 3
• VTP VLAN Trunking Protocol