Chapter 11 Flashcards
Because all the host involved had to go to the corporate backbone in order to reach any network services both LAN and mainframe. p336
Collapsed backbone
Bridges use software to create and manage a filter table but switches used what? p338
Applicationspecific Intergrated Circuits (ASICs)
Layer 2 switching provides the following benefits: p339
Hardware-based bridging (ASIC)
Wire speed
Low latency
Low cost
Both bridges and switches don’t forward Layer 2 broadcast. true or false p340
false they do forward broadcast
Switches have a higher number of ports than most bridges. true or false p340
true
There are three distinct functions of Layer 2 switching you need to know: p340
Address learning
Forward/filter decisions
Loop avoidance
Not transmitting the frame preserves bandwidth on the other network segments and is called what? p343
Frame filtering
The bewildered switch could get so caught up in constantly updating the MAC filter table with source hardware address location that it might fail to forward a frame. This is called what? p345
Thrashing the MAC table
STP uses the ________ to first create a topology database and then search out and destroy redundant link. p346
Spanning-tree algorithm (STA)
(STP) stands for? p346
Spanning Tree Protocol (STP)
The ports on a bridge or switch running STP can transition through five different states: p347
Blocking Listening Learning Forwarding Disabled
Is what happens when all the ports on bridges and switches have transitioned to either forwarding or blocking modes. p347
STP Convergence
Switches populate the MAC address table in learning and forwarding modes only. true or false p347
True
Was not designed to be a brand new protocol but more of an evolution of the 802.1d standard with faster convergence time when a topology change occurs. p348
Rapid Spanning Tree protocol (RSTP)
QoS methods focus on one of five problems that can affect data as it traverses network cable: p353
Delay Dropped packets Error Jitter Out-of-order delivery
What is an Access Port. p355
An access port belongs to and carries the traffic of only one VLAN. Anything arriving on an access port is simply assumed to belong to the VLAN assigned to the port.
Is a 100Mbps or 1000Mbps point-to-point link between two switches, between a switch and router or even between a switch and server and it carries the traffic of multiple VLANs from 1 to 4,094 VLANs at a time. p356
Trunk link
Is a way of explicitly tagging VLAN information onto an Ethernet frame. p357
Inter-Switch Link (ISL)
Pretty versatile and can be used on a switch port on router interfaces and on server interface cards to trunk a server. p357
ISL routing
The voice VLAN used to be called the ________VLAN which allowed it to be overlaid on top of the data VLAN enabling both types of traffic through the same port. p356
AUXILIARY
Are to manage all configured VLANs across a switched internetwork and to maintain consistency throughout that network. p359
VLAN Trunking Protocol (VTP)
What are some of the features VTP has to offer: p359
Consistent VLAN configuration across all switches in the network
Accurate tracking and monitoring of VLANs
Dynamic reporting of added VLANs to all switches in the VTP domain
Adding VLANs using plug-and-play
You can configure switches to foward VTP information through trunk ports but not to accept information updates or update their VTP database. p359
VTP Transparent mode
Requirements for VTP to communicate VLAN information between switches: p359-360
The VTP management domain name of both switches must be the same.
One of the switches has to be configured as a VTP server.
Set a VTP password if used.
No router is necessary and a router is not a requirement.
The three different modes of operation within a VTP domain: p360
SERVER
CLIENT
TRANSPARENT
You can buy switches that are _______ but you never ever want to do that for an enterprise network. p361
Unmanaged
Anything you get for an office or larger network absolutely must be a _______ switch. p361
Managed
Configuring a switch _________ mean you’re not going through the network to configure the device you’re actually using a port such as a console port to configure the switch instead. p361
Out-of-band
