Cisco Networking වැඩ්ඩෝ

genius_EK

Well-known member
  • Jan 8, 2011
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    ۩ Apocrypha ۩
    යකෝ උබේ config එක නිකන් අච්ච්රුවක් වගේ නේ බන් එපා වෙනවා :nerd:

    හරියට vlan ටික හදපන් කම්මැලි නම් VTP enable කරපන්, Distribution layer එකේ switch වලත් සම්පුර්ණ vlan database එක තියෙන්න ඕන, access, trunk පොර්ට් හරියට config කරපන් (HR ට එක switch එකයි IT ට එක switch එකයි තියෙන්න හදනවා නම් vlan මොකටද බෝල) native vlan match නෑ කියල එන error එක හදපන් Distribution layer එකේ. හරියට vlan ටික හැදුව නම් දැන් root දෙකක් තියෙන case එක විසදේවි, ඔකේ stp අව්ලක් කොහේ වත් නෑ බන්.
     

    bulza

    Well-known member
  • Apr 21, 2010
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    පාතාලේ
    යකෝ උබේ config එක නිකන් අච්ච්රුවක් වගේ නේ බන් එපා වෙනවා :nerd:

    හරියට vlan ටික හදපන් කම්මැලි නම් VTP enable කරපන්, Distribution layer එකේ switch වලත් සම්පුර්ණ vlan database එක තියෙන්න ඕන, access, trunk පොර්ට් හරියට config කරපන් (HR ට එක switch එකයි IT ට එක switch එකයි තියෙන්න හදනවා නම් vlan මොකටද බෝල) native vlan match නෑ කියල එන error එක හදපන් Distribution layer එකේ. හරියට vlan ටික හැදුව නම් දැන් root දෙකක් තියෙන case එක විසදේවි, ඔකේ stp අව්ලක් කොහේ වත් නෑ බන්.

    VTP enable karala tynne bn.. uba hriyta balal ne...

    Code:
    D_Switch1#sh vtp status 
    VTP Version                     : 2
    Configuration Revision          : 49
    Maximum VLANs supported locally : 1005
    Number of existing VLANs        : 12
    VTP Operating Mode              : Server
    VTP Domain Name                 : trustsecurities.lk
    VTP Pruning Mode                : Disabled
    VTP V2 Mode                     : Disabled
    VTP Traps Generation            : Disabled
    MD5 digest                      : 0x49 0x92 0x3C 0xB0 0xCF 0xD1 0xD3 0xAE 
    Configuration last modified by 0.0.0.0 at 3-1-93 00:00:00
    Local updater ID is 0.0.0.0 (no valid interface found)
    D_Switch1#
    D_Switch1#
    D_Switch1#sh vl
    D_Switch1#sh vlan br
    D_Switch1#sh vlan brief 
    
    VLAN Name                             Status    Ports
    ---- -------------------------------- --------- -------------------------------
    1    default                          active    
    10   HR                               active    Fa0/1
    20   ACC                              active    Fa0/2
    30   Finance                          active    Fa0/3
    40   QA                               active    Fa0/4
    50   Sales&MKT                        active    Fa0/5
    60   IT                               active    Fa0/6
    70   VLAN0070                         active    Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                    Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                    Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                    Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                    Fa0/23, Fa0/24
    1002 fddi-default                     active    
    1003 token-ring-default               active    
    1004 fddinet-default                  active    
    1005 trnet-default                    active    
    D_Switch1#

    Okkm VLAN create karala tynne access layer eke newei distribution layer switches wala.. hierarchy model eke describe krana widhata.. (access layer switch unmanageable wage tynne) ow bn native vlan case 1k tama tynne... solve karagnna widhak kyapnko pddk.. PAgp channel 1k ahak kalm baba wage weda packets loop wen ne.. vlan wla priority wens karala bluwa eth hri yan ne.. :no:



    ubata config eke clear natte koheda bn ? ;)
     

    lalindutj

    Well-known member
  • Sep 12, 2010
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    ubata wenna one tika dapan machan meke
    danna un eka balala udaw karai

    yata switches wala vlan hadanna one nadda bn ?
     

    sanjaya22

    Well-known member
  • Nov 19, 2012
    1,356
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    1. First of all ,configure the error disable commands.
    Ex :
    errdisable recovery cause udld
    errdisable recovery cause bpduguard
    errdisable recovery cause security-violation
    errdisable recovery cause channel-misconfig
    errdisable recovery cause pagp-flap
    errdisable recovery cause dtp-flap
    errdisable recovery cause link-flap
    errdisable recovery cause gbic-invalid
    errdisable recovery cause l2ptguard
    errdisable recovery cause psecure-violation
    errdisable recovery cause dhcp-rate-limit
    errdisable recovery cause unicast-flood
    errdisable recovery cause vmps
    errdisable recovery cause storm-control
    errdisable recovery interval 60

    2.Check the logs of the switches .You will get the answer.

    3.Sometimes Packet Tracer allows you to simulate the packet path. From this also you can get an idea.

    4.Did you check debug logs ?
     

    sanjaya22

    Well-known member
  • Nov 19, 2012
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    When the switches of distribution layer are executed show spanning tree command, both switches show as a root. i think that its the problem. Further, for overcome this issue i have given spanning tree VLAN priority for each VLANS. But it was not successfully. And also, RPVST+ was also configured by me. But it was also not successfully. So i think that it i have done it wrongly.

    Two Root bridges should not reside in the same segment. It will analyze highest Interface IP address , Bridge ID etc to determine the root bridge.Change the MAC address of a One switch and make only one of them root bridge.
     
    Last edited:

    bulza

    Well-known member
  • Apr 21, 2010
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    367
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    පාතාලේ
    When the switches of distribution layer are executed show spanning tree command, both switches show as a root. i think that its the problem. Further, for overcome this issue i have given spanning tree VLAN priority for each VLANS. But it was not successfully. And also, RPVST+ was also configured by me. But it was also not successfully. So i think that it i have done it wrongly.

    Two Root bridges should not reside in the same segment. It will analyze highest Interface IP address , Bridge ID etc to determine the root bridge.Change the MAC address of a One switch and make only one of them root bridge.

    As you mentioned, the switches has been configured already.i have changed VLAN priority in both switches. ( i have rooted one distribution layer switch for 3 VLANs and other distribution switch for another 3 VLAN ) but it was not working for me. :(:(

    I did not execute any bebug command. I think that there is a native vlan problem.. :(
     

    colomboguy321

    Junior member
  • Apr 18, 2010
    64
    3
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    Hi just by looking at the topology i feel it look like theres a desighn failure the way you have configured the switches
    actually what you really wanted to happen do you want to kee the departments like HR , ACC , Finance , QA , Sales , Marketing in their own VLAN but no connectivity between them oy you need inter VLAN routing among them

    clearly specify you requirement

    Thanks