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CCNP Switch > CCNP switch slides 10 > Flashcards

CCNP switch slides 10 Flashcards

1
Q

source

A

http://www.coursehero.com/flashcards/430770/CCNP-SWITCH-642-813-VLAN-Implementation/

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2
Q

What are the two methods of identifying VLANs over trunk links? (i.e. trunking methods)

A

-ISL-802.1Q

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3
Q

VLANs separate what?

A

Broadcast domains.

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4
Q

How do you set a native VLAN for a trunk port?

A

(if)switchport trunk native vlan ##

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5
Q

If a switch recieves a VTP advertisement with a lower configuration revision number, what will it do?

A

It will send the originator an update containing its higher revision number.

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6
Q

How many classes of PoE are there, what are they, and what is the default class?

A

There are 5 classes, 0-4, and 0 is default.

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7
Q

How do you set encapsulation methods on a trunk?

A

(if)switchport trunk encapsulate [isl, dot1q, negotiate]

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8
Q

Is VTP version 1 compatible with version 2? How do you enable version 2 across an entire VTP domain?

A

-No, version 2 is NOT compatible with version 1.-Enabling VTP version 2 on the VTP server will enable it on all connected domain members capable of supporting it.

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9
Q

What information is contained in the 802.1Q tag on a frame?

A

-The first two bytes are the the Tag-Protocol ID (always 0x8100 for dot1q).-The second two bytes are for the Tag Control Info, that contain the three-bit priority field (for CoS/QoS) and the VLAN ID is the last 12-bits.

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10
Q

What is VTP?

A

VLAN Trunking Protocol, Cisco proprietary.

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11
Q

What is DTP?

A

Dynamic Trunking Protocol - used for negotiating trunking states.

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12
Q

What command will tell an interface to prune VLANs from a trunk?

A

(if)switchport trunk pruning vlan [add, except, remove, or none]

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13
Q

What is the definition of an ‘Active’ VLAN?

A

One that has been defined and has ports assigned to carry it.

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14
Q

What is the command to remove a VTP password from a VTP Domain?

A

(config)no vtp password

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15
Q

What are the two types of VLANs?

A

-End-to-End (Multi-switch VLANs)-Local (stays on single switch)

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16
Q

Define the difference between a physical subnet and a logical subnet.

A

-Physical, devices that share the same wire. -Logical, devices assigned to the same VLAN.

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17
Q

What are the three types of VTP advertisements?

A

-Summary, send every 300 seconds or when a change occurs(like a heads-up)-Subset, sent only when changes occur, and contain only the changes.-Request, sent when a client needs info (like when it reboots or changes domains)

18
Q

When are frames tagged and untagged in trunking?

A

-Frames are tagged when leaving on a trunk, and untagged when arriving on a trunk.-Frames are tagged internally once received on a port, and untagged when they are sent out the destination port.

19
Q

What command can be used to check on the configuration revision number in VTP?

A

show vtp status

20
Q

VTP advertisements are sent as what type of frame? (Unicast, Broadcast, Multicast?)

A

Multicast frames when there is a change.

21
Q

What switchport mode, when configured on BOTH ends, will never establish a trunk?

A

dynamic AUTO.

22
Q

How do you enable vtp pruning?

A

(config)vtp pruning. Done on the server, this will enable it for an entire domain.

23
Q

What are the VLAN show commands?

A

show vlan, show vlan brief, show vlan id ##, show vlan name NAME

24
Q

What is the over-subscriber ratio of Access-to-Distribution and Distribution-to-Core?

A

A-D 20:1, D-C 4:1

25
Q

What are the commands to create a VLAN?

A

(global) vlan ##, name MYNAME (optional)

26
Q

What are the 5 DTP modes?

A

-Access, member of a single VLAN.-Trunk, port attempts to negotiate trunking.-Non-negotiate, port set to trunk but does NOT negotiate.-Dynamic Desirable, Actively negotiates a trunk, and links if other side is Trunk, DD, or DA.-Dynamic Auto. Passively waits for other side to negotiate trunk. Links if other side is trunk or DD.

27
Q

What are the three roles for a VTP switch?

A

-Server, create delete and rename.-Client, cannot make changes.-Transparent, local only create delete and rename.

28
Q

How do you set a trunk to allow only certain VLANs?

A

(if)switchport trunk allowed vlan ##s

29
Q

What happens if a non-trunking port receives an 802.1Q frame?

A

The tag field is ignored and the frame is switched normally at L2 with the Source and Destination MAC.

30
Q

What VTP version do switches use by default?

A

Version 1.

31
Q

How often does VTP send out advertisements, by default, and what do they contain?

A

Every 5 minutes, they contain the configuration revision number.

32
Q

How do you make a switchport into a trunk?

A

(if)switchport mode [trunk, dyn auto, dyn des]

33
Q

What are the 4 commands to configure a switch for VTP?

A

(config)vtp [server, client, transparent]vtp domain NAMEvtp password PASSWORDvtp version 2

34
Q

How often are DTP frames sent out on switchports?

A

Every 30 Seconds.

35
Q

What are the default ranges for VLAN numbers?

A

1-1005, with 1 being reserved for default, and 1002-1005 are reserved for legacy

36
Q

What is contained in the ISL header and trailer when tagging a frame?

A

a 15-bite VLAN ID field in the header, and a CRC value in the trailer.

37
Q

What are the commands to assign a port to a VLAN?

A

(if)switchport mode accessswitchport access vlan ##

38
Q

What command displays Power over Ethernet information about a switch?

A

(exec)show power inline

39
Q

What are the differences between VTP version 1 and version 2?

A

Version 2 supports Token Ring VLANs, transparent switches will pass both versions, and consistency checks are only performed when changes are manually configured.

40
Q

What is 802.1Q?

A

-Standards-based trunking protocol.-inserts a field into the original frame after source MAC address field.-Supports Ethernet and Token Ring.

41
Q

What are the ranges for extended VLANs and when can they be used?

A

1-4094 and only on a switch in Transparent VTP mode.

42
Q

What is ISL?

A

-Inter-Switch Link-Cisco proprietary-encapsulates frame in a 26-byte header containing VLAN info and a 4-byte trailer.-Protocol-independant-Can identify CDP and BPDU frames.

CCNP Switch (16 decks)

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