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New Member

VTP Server-Client-Trans !!!

Hi All,

Secinario :  PC1 -- SW1 --  SW2 -- SW 3 -- PC2

SW1 - Server ,  SW2- Trans , SW3- Client

Vlan - 10,20 on swithces.

1)  I have created  SW1 - Server ,  SW2- Trans , SW3- Client & created  Vl 10,20 on SW1 but not updating Vlan on SW3- client Switch. ???  why  ??  might be bcoz of SW2 is trans mode !!! it should bcoz SW2 will not update it's own DB but pass that info to other client SW's.

2) What I did , just change the mode on SW2 - trans to Client & working fine.& able to ping Pc1 to PC2 !!!! ???

3) Again , I changed that mode back to Trans mode on SW2. still  I can ping Pc1 to PC2 !!!! Bcoz,  I can see Vl 10 & 20 in that Vlan DB in trans mode.

4) Now, just removed , Vl 10 , 20 from SW2 - trans mode & not able to ping Pc1 to PC2 !!!!

Can any one please explain briefly on it ??? why it' happening ??

Thanks in advance..

Thanks,

Raj

Thanks & regards, Rajdeep Parmar
Everyone's tags (4)
2 ACCEPTED SOLUTIONS

Accepted Solutions
Purple

Re: VTP Server-Client-Trans !!!

  Because you are using Sw2 as a transit vlan between server and client switches.  If you delete 10,20 on Sw2 the switch has no way to tag the data from those vlans across the trunks . It thus gets dropped on the floor. The vlan database  and what is allowed across the trunks are 2 different things.

You still have to manually create those vlans on Sw 2 if you want traffic to flow between Sw1 and 3 .

Gold

Re: VTP Server-Client-Trans !!!

Raj, as i said earlier u need necessary vlan definitions if applicable (in ur case 10,20) on all ur switches including ur transparent switch, to allow transiting for vlan 10 and 20 on ur SW2 trunks.

Manualy create vlan 10 n 20 on SW2 n there u go.

now rate me LOL.

Soroush.

Hope it Helps, Soroush.
7 REPLIES
Gold

VTP Server-Client-Trans !!!

Hi,

Things to Check;

VTP Domain , VTP Password, VTP Version, necessary vlan definitions if applicable (in ur case 10,20).

also check your revision number on SW3 ** < important >  **  switch# show vtp status

cheerZ

plz rate if helped,

Soroush.

Hope it Helps, Soroush.
New Member

VTP Server-Client-Trans !!!

Hi,

Thanks for reply.  Here is the config.  Please advice !!! a

--------------------------------------------------------------------

SW__1__(config)#do sh vt sta

VTP Version                     : 2

Configuration Revision          : 0

Maximum VLANs supported locally : 255

Number of existing VLANs        : 7

VTP Operating Mode              : Server

VTP Domain Name                 : ABC

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xFB 0x53 0x04 0x9F 0xA9 0x96 0xE1 0x60

Configuration last modified by 0.0.0.0 at 3-1-93 00:01:57

SW__2__(config)#do sh vt sta

VTP Version                     : 2

Configuration Revision          : 0

Maximum VLANs supported locally : 255

Number of existing VLANs        : 5

VTP Operating Mode              : Transparent

VTP Domain Name                 : ABC

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xFB 0x53 0x04 0x9F 0xA9 0x96 0xE1 0x60

Configuration last modified by 0.0.0.0 at 3-1-93 00:01:57

SW__2__(config)#

SW__3__(config)#do sh vtp sta

VTP Version                     : 2

Configuration Revision          : 0

Maximum VLANs supported locally : 255

Number of existing VLANs        : 7

VTP Operating Mode              : Client

VTP Domain Name                 : ABC

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xFB 0x53 0x04 0x9F 0xA9 0x96 0xE1 0x60

Configuration last modified by 0.0.0.0 at 3-1-93 00:01:57

SW__3__(config)#

===================================

SW__1__(config)#do sh vl

VLAN Name                             Status    Ports

---- -------------------------------- --------- -------------------------------

1    default                          active    Fa0/2, Fa0/3, Fa0/4, Fa0/5

                                                Fa0/6, 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, Gig1/1

                                                Gig1/2

10   HR                               active   

20   ACC                              active   

1002 fddi-default                     act/unsup

1003 token-ring-default               act/unsup

1004 fddinet-default                  act/unsup

1005 trnet-default                    act/unsup

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2

---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------

1    enet  100001     1500  -      -      -        -    -        0      0

10   enet  100010     1500  -      -      -        -    -        0      0

20   enet  100020     1500  -      -      -        -    -        0      0

1002 fddi  101002     1500  -      -      -        -    -        0      0  

1003 tr    101003     1500  -      -      -        -    -        0      0  

1004 fdnet 101004     1500  -      -      -        ieee -        0      0  

1005 trnet 101005     1500  -      -      -        ibm  -        0      0  

Remote SPAN VLANs

------------------------------------------------------------------------------

Primary Secondary Type              Ports

------- --------- ----------------- ------------------------------------------

===============================================================

SW__2__(config)#

SW__2__(config)#do sh vl

VLAN Name                             Status    Ports

---- -------------------------------- --------- -------------------------------

1    default                          active    Fa0/3, Fa0/4, Fa0/5, Fa0/6

                                                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, Gig1/1, Gig1/2

1002 fddi-default                     act/unsup

1003 token-ring-default               act/unsup

1004 fddinet-default                  act/unsup

1005 trnet-default                    act/unsup

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2

---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------

1    enet  100001     1500  -      -      -        -    -        0      0

1002 fddi  101002     1500  -      -      -        -    -        0      0  

1003 tr    101003     1500  -      -      -        -    -        0      0  

1004 fdnet 101004     1500  -      -      -        ieee -        0      0  

1005 trnet 101005     1500  -      -      -        ibm  -        0      0  

Remote SPAN VLANs

------------------------------------------------------------------------------

Primary Secondary Type              Ports

------- --------- ----------------- ------------------------------------------

====================================================

SW__3__(config)#do sh vl

VLAN Name                             Status    Ports

---- -------------------------------- --------- -------------------------------

1    default                          active    Fa0/2, Fa0/3, Fa0/4, Fa0/5

                                                Fa0/6, 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, Gig1/1

                                                Gig1/2

10   HR                               active   

20   ACC                              active   

1002 fddi-default                     act/unsup

1003 token-ring-default               act/unsup

1004 fddinet-default                  act/unsup

1005 trnet-default                    act/unsup

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2

---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------

1    enet  100001     1500  -      -      -        -    -        0      0

10   enet  100010     1500  -      -      -        -    -        0      0

20   enet  100020     1500  -      -      -        -    -        0      0

1002 fddi  101002     1500  -      -      -        -    -        0      0  

1003 tr    101003     1500  -      -      -        -    -        0      0  

1004 fdnet 101004     1500  -      -      -        ieee -        0      0  

1005 trnet 101005     1500  -      -      -        ibm  -        0      0  

Remote SPAN VLANs

------------------------------------------------------------------------------

====================================================

Thanks & regards, Rajdeep Parmar
Gold

Re: VTP Server-Client-Trans !!!

Raj, as i said earlier u need necessary vlan definitions if applicable (in ur case 10,20) on all ur switches including ur transparent switch, to allow transiting for vlan 10 and 20 on ur SW2 trunks.

Manualy create vlan 10 n 20 on SW2 n there u go.

now rate me LOL.

Soroush.

Hope it Helps, Soroush.
New Member

VTP Server-Client-Trans !!!

Soroushm ...

Done.. ...

Thanks .. see u soon ..

Cheers !!

Thanks & regards, Rajdeep Parmar
Purple

Re: VTP Server-Client-Trans !!!

  Because you are using Sw2 as a transit vlan between server and client switches.  If you delete 10,20 on Sw2 the switch has no way to tag the data from those vlans across the trunks . It thus gets dropped on the floor. The vlan database  and what is allowed across the trunks are 2 different things.

You still have to manually create those vlans on Sw 2 if you want traffic to flow between Sw1 and 3 .

New Member

VTP Server-Client-Trans !!!

Glen.Grant...

Thanks a lot .. ... cheers !!

Thanks & regards, Rajdeep Parmar
New Member

Re: VTP Server-Client-Trans !!!

Hi,

Try to put VTP version to 2 on all your switchs.

the command if you don't remember : "vtp version 2"

I remember something about switch in transparent mode doesn't forward when they are in version 1

For the ping problem, glen.grant gave the answer

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