Chapter 5 Analyzing Ethernet LAN Switching Flashcards Preview

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Flashcards in Chapter 5 Analyzing Ethernet LAN Switching Deck (14)
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1
Q

What is a broadcast frame.

A

An Ethernet Frame sent to a destination address FFFF.FFFF.FFFF , meaning that the frame should be delivered to all hosts on the LAN

2
Q

Known unicast frame

A

And ethernet frame who’s destination Mac address is listed in a switches Mac address table, so the switch will forward that frame out the one port associated with the entry and that Mac address table

3
Q

STP

A

Spanning tree protocol. A protocol defined by IEEE standard 802.ID . Allow switches and bridges to create a redundant LAN with the protocol dynamically causing some ports to block traffic, so that the bridge / switch forwarding logic will not cause frames to loop indefinitely around the LAN.

4
Q

Unknown unicast frame

A

and ethernet frame whose destination Mac address is not listed in a switches Mac address table, so the switch must flood the frame

5
Q

Mac address table

A

A table of forwarding information held by a layer to switch, built dynamically by listening to incoming frames and used by the switch to match frames to make decisions about where to forward the frame

6
Q

What is flooding and forwarding in regards to switches

A

Forwarding is regarding sending a frame received in one interface out another interface, towards his ultimate destination.

flooding is the result of the land switch forwarding process for broadcast and unknown unicast frames. Switches for these frames out all interfaces, except the interface in which the frame arrived. Switches also fled multicass by default, although this behavior can be changed.

7
Q

CLI

Show mac address-table

A

Shows all Mac table entries of all types

8
Q

CLI

Show mac address-table dynamic

A

Shows all dynamic we learned Mac table entries

9
Q

CLI

Show mac address-table count

A

Shows the number of entries in a Mac table and a total number of remaining empty slots in the Mac table

10
Q

Show mac address-table aging-time

A

Shows the global and per VLAN aging time out for inactive mac table entries

11
Q

CAM

A

Content addressable memory. This is the type of memory used to store a mac address table.

12
Q

Switches build incoming frames by listening to what address.

A

Source Mac address

13
Q

When a switch receives a frame and there is no matching entry into it’s mac table, the switch forwards that frame out of all interfaces except what .

A

The incoming interface.

14
Q

What is the broadcast address

A

FFFF.FFFF.FFFF