Day 17 Flashcards - VLANs (Part 2)

VLANs: […] ports are known as 'tagged' ports.

Trunk

VLANs: […] ports are known as 'untagged' ports.

Access

VLANs: Switches will tag frames sent out of […] ports with a VLAN number.

trunk

What is a Cisco proprietary VLAN trunking protocol?

ISL (Inter-Switch Link)

What is an industry standard VLAN trunking protocol?

IEEE 802.1Q (dot1q)

The 802.1Q tag is inserted after the […] field of the Ethernet header.

Source MAC Address

The 802.1Q tag is […] bytes in length.

4

802.1Q tag: What does TPID stand for?

Tag Protocol Identifier

802.1Q tag: What does PCP stand for?

Priority Code Point

802.1Q tag: What does DEI stand for?

Drop Eligible Indicator

802.1Q tag: What does VID stand for?

VLAN ID

802.1Q tag: The TPID field is […] bits in length.

16

802.1Q tag: The TPID field is alway set to a value of […]

0x8100

802.1Q tag: The PCP field is […] bits in length.

3

802.1Q tag: The […] field is use for Class of Service.

PCP

802.1Q tag: The DEI field is […] in length.

1 bit

802.1Q tag: The […] field indicates that a frame can be dropped if the network is congested.

DEI

802.1Q tag: The […] field identifies the VLAN the frame belongs to.

VID

VLANs […] and […] are reserved and cannot be used.

0  /  4095

The range of usable VLANs is […] to […]

1 to 4094

The Normal VLAN range is […] to […]

1 to 1005

The Extended VLAN range is […] to […]

1006 to 4094

The default native VLAN is VLAN […] on all trunk ports.

1

The switch does not add an 802.1Q tag to frames in the […] VLAN over a trunk link.

native

When a switch receives an untagged frame on a trunk port, it assumes the frame belongs to the […] VLAN.

native

Configure the interface as a trunk port:SW1(config-if)# […]

switchport mode trunk

Configure the encapsulation type on a trunk port:SW1(config-if)# […]

switchport trunk encapsulation encapsulation-type

Display all trunk ports on the switch:SW1# […]

show interfaces trunk

Configure the allowed VLANs on a trunk port:SW1(config-if)# […]

switchport trunk allowed vlan allowed-vlans

For security purposes, it is best to change the native VLAN to an […] VLAN.

unused

Configure the native VLAN on a trunk port:SW1(config-if)# […]

switchport trunk native vlan vlan-number

Configure the VLAN number on a router subinterface:R1(config-subif)# […]

encapsulation dot1q vlan-number

ROAS involves configuring VLAN tags and IP addresses on router […].

subinterfaces