Here ye, here ye, VTP experts. (We are not referring to the Vandenberg Test Program, although they are very likely experts in their field as well. )
Can you predict the results of a 3 switch VTP client/server scenario?
SW1-3, are connected, as shown in the diagram.
Here is the initial output of show VTP status, and show VLAN brief on each. Note that SW1 and SW3 are servers, while SW2 is a client. We will be adding a failure to the network in just a moment.
If we then restore the Fa0/24 connection between SW1 (the server) and SW2 (the client) what will happen to the VTP/VLAN information on the two switches? Will there be an update on either switch, will SW1 wait for a Server advertisement or will something else happen all together?
Take a moment, and let us know what you think.
Best wishes,
Can you predict the results of a 3 switch VTP client/server scenario?
SW1-3, are connected, as shown in the diagram.
Here is the initial output of show VTP status, and show VLAN brief on each. Note that SW1 and SW3 are servers, while SW2 is a client. We will be adding a failure to the network in just a moment.
SW1#show vtp status VTP Version : 2 Configuration Revision : 3 Maximum VLANs supported locally : 1005 Number of existing VLANs : 8 VTP Operating Mode : Server VTP Domain Name : INE VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0x2C 0x04 0x21 0x2B 0x10 0xFE 0x03 0x50 Configuration last modified by 0.0.0.0 at 3-1-93 00:05:40 Local updater ID is 0.0.0.0 (no valid interface found) SW1#show vlan brief VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa0/1, 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, Gig0/1 Gig0/2 2 VLAN0002 active 3 VLAN0003 active 4 VLAN0004 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SW1# SW2#show vtp status VTP Version : 2 Configuration Revision : 3 Maximum VLANs supported locally : 1005 Number of existing VLANs : 8 VTP Operating Mode : Client VTP Domain Name : INE VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0x2C 0x04 0x21 0x2B 0x10 0xFE 0x03 0x50 Configuration last modified by 0.0.0.0 at 3-1-93 00:05:40 SW2#show vlan brief 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, Gig0/1, Gig0/2 2 VLAN0002 active 3 VLAN0003 active 4 VLAN0004 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SW2# SW3#show vtp status VTP Version : 2 Configuration Revision : 3 Maximum VLANs supported locally : 1005 Number of existing VLANs : 8 VTP Operating Mode : Server VTP Domain Name : INE VTP Pruning Mode : Disabled VTP V2 Mode : Disabled VTP Traps Generation : Disabled MD5 digest : 0x2C 0x04 0x21 0x2B 0x10 0xFE 0x03 0x50 Configuration last modified by 0.0.0.0 at 3-1-93 00:05:40 Local updater ID is 0.0.0.0 (no valid interface found) SW3#show vlan brief 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, Gig0/1 Gig0/2 2 VLAN0002 active 3 VLAN0003 active 4 VLAN0004 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SW3#So here is the scenario for the question. The Fa0/24 connection is suddenly broken between SW1 and SW2, and while that is down, a new VLAN (we will use 999) is created on SW3 like this:
SW3(config)#vlan 999And then, a few minutes later, SW3 is completely powered off, shipped to another city, and removed completely from this network forever.
If we then restore the Fa0/24 connection between SW1 (the server) and SW2 (the client) what will happen to the VTP/VLAN information on the two switches? Will there be an update on either switch, will SW1 wait for a Server advertisement or will something else happen all together?
Take a moment, and let us know what you think.
Best wishes,
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