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ͥåȥڥꥹȻ˹ʤȡͥåȥ˴ؤμ䵻ѤǤʤɲϤʸϤȤˤĤޤ
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ƥꡧ7.ءL1,L2 > 7.3 VLAN

VLANVirtual LAN)ϡŪʥͥåȥΤǤ롣
H17SW1ˤˡVLANˤĤƤΤǾҲ𤹤롣
ȸΥåˤ,ʪŪ³֤ȤΩŪʥͥåȥΥ롼פVLAN"ǽĤΤ롣VLANѤ뤳Ȥ,ʣʷ֤Υͥåȥưפ˹ۤǤȤȤ,[b]ˤбǤ褦ˤʤ롣VLANμʤΤˤ,ݡȥ١VLANȥVLAN2ब롣
ά
VLAN[c]ȤɸಽƤΤ,ۤʤ륹å٥ʤȤäޥ٥ĶǤѤǽǤ롣

β
b֥ͥåȹѹ
cIEEE802.1Q

VALNΥե졼๽¤˴ؤƤϡVLANΥե졼ǧƤۤñˤȡMACɥ쥹ȥפδ֤VLANֹ椬롣

ǤϤꡣ
ͥåȥʬ䤷֥ɥ㥹ȥɥᥤʬ䤹Τϲ
ꥸɥᥤʬ䤹Τϲ


֥ɥ㥹ȥɥᥤʬ䡧VLAN
ꥸɥᥤʬ䡧å󥰥ϥ

VLANˤϡݡVLANȥVLAN2Ĥ롣
H17SW1ˤˡξԤƤ줤˲⤵Ƥ롣
ݡȥ١VLANǤ,åʪŪʥݡȤȤVLAN롼פꤹ롣,VLANǤ̿ѥåޤ줿IDVLAN롼פ꤬ǽǤ롣VLANǤ,ĤʪŪʥݡȤʣVLAN롼פ˽°ǤΤ,ʣΥå֤1ܤʪŪʥ֥³Ǥ,ƥåʣVLAN롼פѤǽˤʤ롣
4

ϤʤȤʤ狼ޤ
ºݤ˼ʬꤷʤȡ᡼狼ʤǤ
Ǥ͡ºݤꤹ뤳Ȥ򤪴ᤷޤ
ΤƤĶˤäƤϡºݤꤹ뤳Ȥ񤷤⤷ޤ󡣤ʾϡºݤ꤬ɤʤäƤ뤫ǧǤ⡢᡼來䤹ʤ롣

ʲˡºݤñ˾Ҳ𤹤롣

ʣ˥ݡVLAN
ݡȤȤVLANƤ롣ʲCiscoҤSwitchǤCatalystΥݡ1֤VLAN10ƤǤ롣
ConfigϻˤϽФʤConfig⸫Ƥ򤬿ޤ롣
Switch(config)# interface fastethernet 0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 10

ʣ˥VLAN
VLANե졼VLAN򸫤VLANȽǤ롣嵭Ʊͤ˥ݡ2֤Trunk򤹤롣AllowdVlanȤΤϡĤVLANǤ롣ξVLAN1020ĤƤ롣
Switch(config)# interface fastethernet 0/2
Switch(config-if)# switchport trunk allowed vlan 10,20
Switch(config-if)# switchport mode trunk


ͥƥVLANNative VLAN)
H21NW11ʸǡͥƥVLANΤȤ֥VLANѤѤVLANΰĤ̤VLANȤưղäʤե졼ѤפƤ롣

VLANǡͣ쥿դʤVLANǤ롣CiscoǤС̾VLAN1ͥƥVLANǤ롣TrunkꤷƤݡȤ̾ϥդ줿ե졼षήʤVLAN1ϥդʤäơdot1Q꤬Ƥʤ˥ѥ³Ƥ̿Ǥ롣

CiscoǥͥƥVLANѹˤ륳ޥɤϰʲǤ롣 
Switch(config-if)# switchport trunk native vlan 30

ޤϤ餤ǡͥåȤΥե졼๽¤ϰʲǤ롣
VlanΥե졼๽¤


MACɥ쥹ȥפδ֤4ХȤVLAN802.1Qإåˤ롣
פȥǡδ֤ǤϤʤ
IEEE802.1Qإå4Х
TPID(Tag Protocol Identifier)ϡ̾ΥVLANIEEE802.1QˤǤϡ0x8100Ȥ͡
TCI(Tag Control Informationˤ3ӥåȤͥ١CoSˡCoSIEEE802.1pˤͥѤ롣
TCI1ӥåȤCFI ޤDEIˤʤäƤޤְ㤤
TCI12ӥåȤVLAN ID12ӥåȤʤΤǡ212=4096ͤ롣04096ѤǤʤΤǡºݤˤ4094VLAN IDǤ롣

H25NW孵3ˤ򤤤Ƥߤ褦
IEEE 802.1Qȥͥ󥰡
ṾѤΡ̡ͤ, 32ӥåȤǹ졤VIDˤϡ̡ͥӥåȤƤ롣

IEEE802.1Qˤơե졼ͿVLANˤĤƤޤϡ֥פǤŪˤϡӥåȤTPIDȡӥåȤTCIʤףӥåȤξǤʸΡIEEE802.1Qȥͥ󥰡ͤǤϡVLANפȲ٤⼨ƤꡤҥȤˤʤäƤޤ



ͿΤVIDVLANIDˤ˳ƤӥåȿƤޤVIDϣӥåȤǤΨ㤫ä褦Ǥ
ɾˤϡVLAN󤬤뤳ȤΤäƤƤ⡤ɤΤ褦ͳˤΤʤΤ򤷤ƤʤΤȻפ롣ѸͤˤĤƤϡñ˰ŵǤʤͳȤߤ򤷤ƤƤۤפȤޤޤ̤ȻפޤVLANϡVID12ӥåȤʤǤ򤷤ƤơǤVLANξ¤4000ȤͤФƤͤϡ4096=212褫ջƳȤǤ礦
 
12ӥå

VXLAN(֥åVirtual eXtensible Local Area NetworkˤˤĤ

饦ɻȼԤǤϰĤΥͥåȥޥƥʥȤߤФȤŪȡVLANξ4094ǤVLAN­ʤʤäƤ롣
VXLANϡե륹ڥ̤ꡢVLANeXtensibleʳĥˤΤǤ
VLANǤVLAN ID12ӥåȡʡ4096ˤǤVXLANVXLAN IDǤVNIVXLAN Network Identifierˤ24ӥåȡ=1677ˤǤ
VXLANϡCiscoVMwareʤɤ󾧤Ǥ롣ʳˤ⡤ޥեȼҤ󾧤NVGRENetwork Virtualization Generic Routing EncapsulationˤϤᡢޤޤ롣̤бε郎¿Ȥ¡

H25NW孵䣳ˤˤϼεҤ롣
ܵҤIEEE 802.1QդΥͥå̿ʰʲ, VLAN̿Ȥˤ¾θܵҤ˱ƶͿˡNWפͳžˤ,  IEEE 802.1Qȥͥ󥰵ѤɬפȤʤ롣Υȥͥ󥰤ϡܵҤVLANդΥѥåȤ򡤹̤VLANդ뤳Ȥˤäƥץ벽롣, IEEE 802.1adˤäɸಽƤ롣
VLANŤͿIEEE 802.1adˤĤƽҤ٤Ƥ롣IEEE802.1QVLANIEEE802.1QVLANȤ̣QinQȤդ߿ͤ⤤뤳ȤȤߤϥץǡVLAN⤦դ襤ͥåȥӥʤɡʣθܵҤ˥ͥåȥӥ󶡤륷Ѥ롣

ե졼๽¤ϰʲΤ褦ˤʤ롣TPIDIEEE802.1adѤ0x88a8ȤͤȤ롣
QinQΥե졼-ͥåȥڥꥹȻк


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