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dum0785's avatar
dum0785
Icon for Cirrus rankCirrus
Jun 03, 2019
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What's the difference "Virtual Wire" and "VLAN group(Transparent) "

What's the difference "Virtual Wire" and "VLAN group(Transparent) "?

Please tell me easily!

application delivery
BIG-IP
LTM
  • SWJO's avatar
    SWJO
    Jun 03, 2019

    I just know difference simply.

    ​

    vlan-group can create self-ip.

    and virtual-wire can`t create self-ip.

    ​

    that difference cause difference result.

    1) virtual-wire can`t health check.

    -> to do HC, you have to using other interface and considering lots of things.

    ​

    2) vlan-group function is basically arp-proxy architecture. transparent was little different.

    -> If your L2 layer knowledge was poor, very hard to trouble shooting.

    ​

    3) virtual-wire feature support over i5600.(not correct bigip 5000 series support too.)

    ​

    If you have other question, let`s discuss!

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  • SWJO's avatar
    SWJO
    Icon for Cirrostratus rankCirrostratus
    Jun 03, 2019

    I just know difference simply.

    ​

    vlan-group can create self-ip.

    and virtual-wire can`t create self-ip.

    ​

    that difference cause difference result.

    1) virtual-wire can`t health check.

    -> to do HC, you have to using other interface and considering lots of things.

    ​

    2) vlan-group function is basically arp-proxy architecture. transparent was little different.

    -> If your L2 layer knowledge was poor, very hard to trouble shooting.

    ​

    3) virtual-wire feature support over i5600.(not correct bigip 5000 series support too.)

    ​

    If you have other question, let`s discuss!

    • Kalo's avatar
      Kalo
      Icon for Nimbostratus rankNimbostratus
      Nov 22, 2019

      Hello,

      ​

      Do you know whether or not the virtual wire also disable the PVA acceleration automatically(like vlan-group does), if we have confgigured FatL4 virtuals?

      I'm wondering which one has better performance.

  • rob_carr's avatar
    rob_carr
    Icon for Cirrostratus rankCirrostratus
    Jun 04, 2019

    A VLAN group is used to forward traffic between two disparate VLANs, and can have self IP addresses associated with it.

     

    A virtual-wire can be used to forward traffic between two interfaces, typically both with the same 802.1q tag. According to documentation, not all iSeries platforms support the virtual-wire option.

  • dum0785's avatar
    dum0785
    Icon for Cirrus rankCirrus
    Jun 04, 2019

    Thanks, answering.

    Is the meaning the same otherwise?

    ​

    >3) virtual-wire feature support over i5600.(not correct bigip 5000 series support too.)

    Oh, it's OK. I use i2600 this time.

    • SWJO's avatar
      SWJO
      Icon for Cirrostratus rankCirrostratus
      Jun 04, 2019

      i2600 didn`t support virtual-wire.

       

      virtual-wire feature support hardware platform over i5000

  • SWJO's avatar
    SWJO
    Icon for Cirrostratus rankCirrostratus
    Jun 05, 2019

    vlan group and virtual wire are used for transparent topology.

     

    to use vlan group, have to create 2 vlans. ex) ext int

    -> both ext int vlan is same broadcast-domain.

    -> In normal case, each vlan have different broadcast-domain.

    and create vlan-group with member ext int name VG

    and you can create self-ip with vlan->VG.

    If you consider HA pair, have to consider loop topology.

    And you have to configure exclusive IP address each bigip`s self-ip.