VTP Version 1と2の違いによる転送

NOTE

  • 古いドキュメントにはversion 1はドメイン名とversionが一致すれば転送するとあったために確認した時の内容。
  • 最近のスイッチではドメイン名さえ同じであれば転送する。

 

DIAGRAM

Server              Transparent         Client
[SW1]---------------[Sw2]---------------[SW3]
         fa1/0/1             fa1/0/2

 

VERIFICATION

[v1]–––––[v2]–––––[v1]

  • version 2はドメイン名のみチェックなので上記でもSW2はSW1からの変更をSW3に渡すはず
    ⇒OK、SW3にVLANが作成されている
SW2#debug sw-vlan vtp event
vtp events debugging is on
SW2#
*Mar  1 00:20:20.383: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:20:20.383: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:20:20.408: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:20:20.416: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

 

[v2]–––––[v1]–––––[v2]

  • version 1はドメイン名とversionをチェックなので、ドメイン名を合わせてもversion違いにより転送しないはず
    ⇒NG、SW3にはVLANが作成されていた(最近のSWは転送する)
SW2#debug sw-vlan vtp event
vtp events debugging is on
SW2#
*Mar  1 00:31:04.787: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:31:04.795: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:31:04.812: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:31:04.812: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

SW2#
*Mar  1 00:31:06.851: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:31:06.851: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:31:06.876: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:31:06.876: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

 

[v1]–––––[v1]–––––[v2]

  • version 1はドメイン名とversionをチェックなので、ドメイン名を合わせ、versionも同じなので転送するはず
    ⇒OK、SW3にVLANが作成されている
SW2#debug sw-vlan vtp event
vtp events debugging is on
SW2#
*Mar  1 00:35:44.128: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.128: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.153: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.153: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.849: VTP LOG RUN
SW2#TIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.849: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/1 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.866: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

*Mar  1 00:35:44.866: VTP LOG RUNTIME: Relaying packet received on trunk Fa1/0/2 - in TRANSPARENT MODE (nc = false)

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