නෙට්වර්ක් කරපු අයගෙන් පොඩි උදව්වක් ඕන

chinthaka156

Well-known member
  • Jun 26, 2008
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    එලකිරි හන්දිය
    1642386639864.png


    ඔය උඩ තියෙන Diagram එකෙ IT එකෙ තියෙන Switch එකට පුලුවන් වෙන්න ඕන අනිත් Switch වල තියෙන VLAN info ශෙයර්‍ කර ගන්න.

    ඒ configuration එක කරන්නෙ මොකොහොමද ?

    configure කලාට පස්සේ ඒ ටික verify කරගන්න ඕන. ඒ නිස show command එකත් එවන්න පුලුවන් නම් හොඳයි.

    Switch located at the IT department should be able to distribute VLAN information to all other switches. Use the most preferred method.
     
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    tharakaf

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  • Oct 19, 2020
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    View attachment 157504

    ඔය උඩ තියෙන Diagram එකෙ IT එකෙ තියෙන Switch එකට පුලුවන් වෙන්න ඕන අනිත් Switch වල තියෙන VLAN info ශෙයර්‍ කර ගන්න.

    ඒ configuration එක කරන්නෙ මොකොහොමද ?

    configure කලාට පස්සේ ඒ ටික verify කරගන්න ඕන. ඒ නිස show command එකත් එවන්න පුලුවන් නම් හොඳයි.

    Switch located at the IT department should be able to distribute VLAN information to all other switches. Use the most preferred method.
    If these are different VLANs, you won't be able to communicate inter VLAN without a router or a L3 switch. is the 2960 a L3 switch?
     

    tharakaf

    Well-known member
  • Oct 19, 2020
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    ehema thamai thiyenne. eka verify karaganne kohomada ?
    Can't remember the commands ban. Show IP routes wage ewa thama use wenne. You can google it. To verify if they are working trying pining from one end to the other.

    Anyways since the subnets are directly connected I don't think you need to dance too much. Just configure the default GWs of the end nodes with the relevant GW of that subnet.

    eg: If VLAN 1 has 192.168.10.0/24 subnet the IP on the trunk port will be something like 192.168.10.254 or 192.168.10.1. This will also be the Default GW for the nodes in that VLAN.
     

    lalindutj

    Well-known member
  • Sep 12, 2010
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    VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol

    Before using Vlan, VTP or enabling Trunk in the network, below best practices should be kept in mind.

    VTP is generally not recommended anymore because of configuration complexity and the potential for catastrophic failure. In other words, a small mistake on the VTP configuration can take whole network down.
    If VTP must be used, VTP Transparent mode is best practice because it decreases the potential for operational error.
    Always configure VTP Domain name and password.
    Manually prune unused VLANs from trunked interfaces to avoid
    broadcast propagation.

    Don’t keep default VLAN as native VLAN, it protects from VLAN hopping attacks.
    Disable trunks on host ports.
    Don’t put too many host in one VLAN; keep it small to provide manageable fault domain. In the same VLAN all broadcast unknown unicast packets have to be processed by all the nodes.
    If fast convergence is required, don’t use Dynamic Trunking Protocol (DTP). DTP slows down the convergence because switches negotiate the trunking mode.



    Why VTP is not recommended?
    I have always read to not use VTP because of its risky nature to wipe VLAN configs if improperly configured switches are accidentally placed in production with a newer revision number.


    https://www.cisco.com/c/en/us/td/do..._Guide_Release_5-x_chapter4.html#task_1273736
     

    Geeth_Nuwan

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  • Dec 11, 2007
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    ubata oni VLAN athare communication eka hadagnna da ? Yes nam Inter-VLAN routing config krnna oni, L3 switch ekak nisa eka puluwan. "VLAN info ශෙයර්‍ කර ගන්න" kiyana eka poddk explain karnna mchn, hariyatama mean krnne mokdda kiyala click une na mata
     

    vito

    Well-known member
  • May 5, 2008
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    අදාළ නෑ නේ
    you can configure vtp so vlans would propagate to each switch
    other way is to manually add the vlans and set up the trunks correctly. either way should work.
    either way you can verify by looking at vlans at each switch (show vlan brief). if there are vlans present in each switch after you've done the configuration you're successful.
    is this an exam question or are you doing this in an actual network?
    by default cisco switches come with vtp server mode if I'm not mistaken.. good luck