關(guān)于Cisco native vlan的實(shí)驗(yàn)

alpin

以前沒(méi)接觸過(guò)cisco,都是作別的廠商�，F(xiàn)在改作cisco了,以前做的其他廠商,都是untag/tag來(lái)配vlan.\r\n做了個(gè)針對(duì)native vlan的實(shí)驗(yàn).\r\nshare一下\r\nS1-port24-------------------port24-S2\r\n\r\nS1#sho running-config \r\n!\r\nhostname S1\r\nvtp mode transparent\r\nip routing\r\n\r\n!\r\nvlan 100,200-201 \r\ninterface FastEthernet1/0/24\r\n switchport trunk encapsulation dot1q\r\n switchport trunk native vlan 100\r\n switchport mode trunk\r\n!\r\ninterface Vlan1\r\n ip address 1.1.1.1 255.255.255.0\r\ninterface Vlan100\r\n ip address 100.1.1.1 255.255.255.0\r\ninterface Vlan200\r\n ip address 200.1.1.1 255.255.255.0\r\ninterface Vlan201\r\n ip address 201.1.1.1 255.255.255.0\r\nS1#\r\n\r\nS2#sho running-config \r\n!\r\nhostname S2\r\nvtp mode transparent\r\nip routing\r\n!\r\n!\r\nvlan 100,200-201 \r\n\r\ninterface GigabitEthernet1/0/24\r\n switchport trunk encapsulation dot1q\r\n switchport trunk native vlan 100\r\n switchport mode trunk\r\n!\r\ninterface Vlan1\r\n ip address 1.1.1.2 255.255.255.0\r\n!\r\ninterface Vlan100\r\n ip address 100.1.1.2 255.255.255.0\r\n!\r\ninterface Vlan200\r\n ip address 200.1.1.2 255.255.255.0\r\n!\r\ninterface Vlan201\r\n ip address 201.1.1.2 255.255.255.0\r\n\r\nS2#\r\n此時(shí):\r\n分別PING對(duì)端vlan互連地址,都能通.\r\n\r\n\r\n我的理解:\r\nnative vlan其實(shí)就是untag端口\r\nvlan 1也可以打標(biāo)簽通過(guò)trunk端口(好像使用untag/tag命令行的廠商,做不到這點(diǎn))\r\nswitchport trunk native vlan ?\r\n  <1-4094>  VLAN ID of the native VLAN when this port is in trunking mode\r\n呵呵，命令的解釋說(shuō)明native vlan只存在于trunk(untag時(shí)換名字了叫access 端口)\r\n\r\n大家平常用native vlan嗎？我覺(jué)得還是有用處的,比如你要骨干(用三層)是環(huán)的話,骨干之間要用trunk.這樣vlan 1就存在環(huán)了，必須起stp. 而修改native vlan,就不存在環(huán)路,這樣就可以不用stp.\r\n當(dāng)然你不在乎stp的收斂時(shí)間也無(wú)所謂.\r\n另,大家平常用vtp嗎？我覺(jué)得用處不大,無(wú)非就是讓你在其他交換機(jī)上少配給個(gè)vlan xxx.而且這樣還限制了vlan id只能在1-1000,但這樣就把客戶引導(dǎo)到cisco上來(lái)了,改用其它廠商的,客戶可能就覺(jué)得不方便.\r\n\r\n另,大家平常用pvst嗎？我覺(jué)得簡(jiǎn)直就是個(gè)垃圾,相當(dāng)于把用戶綁架到cisco,別的廠商沒(méi)法跟他互通(能的話,這個(gè)廠商當(dāng)心知識(shí)產(chǎn)權(quán)).\r\n我覺(jué)得如果cisco用stp,還是用mstp吧,你覺(jué)得呢\r\n\r\n隨便說(shuō)說(shuō),剛開(kāi)始做cisco

cnadl

pvst+不但不垃圾，而且是相當(dāng)優(yōu)秀的一個(gè)協(xié)議。

alpin

pvst+當(dāng)然是個(gè)優(yōu)秀的協(xié)議，我只是說(shuō)在有標(biāo)準(zhǔn)的時(shí)候，你還用私有的協(xié)議。mstp也是吸收了pvst+的許多東西。但是畢竟是私有的東西。還是用標(biāo)準(zhǔn)比較好

cnadl

配置mstp和配置pvst+的難度呢？