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Hello Marc,
VTP information can not be passed through the router. The requirement for this to work is a layer 2. i.e. your switches need to be connected to each other. It seems like you're trying to route between VLAN's and also do VTP at the same time.
I'll try to go through this in a easy way so you can understand what is required. This is bare minimal config for you to get end to end connectivity, so please don't mind if I take any existing configuration out. (Attached will be my version of the PKT file so you can see) There are two versions to this.
- Without VTP (Just router that is routing between subnets)
- With VTP - everything will need to change in terms of the topology
We'll start with option 1 - on R1. Your overall config seems fine, however I do want to mention that in a 'router on a stick' scenario you don't normally assign an IP to the physical interfaces themselves, you only assign active IP addresses on the Sub interfaces:
e.g. instead of this:
interface FastEthernet0/1
ip address 192.168.30.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1.2
encapsulation dot1Q 2
ip address 192.168.20.5 255.255.255.0
you do not need the address on fa0/1 you can just specify the sub interfaces address as you have done correctly for int Fa0/1.2
Since all of your PC's are in VLAN 2 we'll just have this:
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.2
encapsulation dot1Q 2
ip address 192.168.20.5 255.255.255.0
Subsequent to this I have removed the VLAN interfaces on the switch as they aren't serving any purpose interms of routing. However you can assign the SVI's back if you wish.
I also did the same for vlan 3 (your servers)
I noticed you are running EIGRP? You only have one router here so EIGRP isn't required. Your router knows about all subnets since they are connected subnets. And it will route between subnets if necessary.
Your default gateway was also misconfigured on the finance and web servers.
I have split this out so that all Servers are on VLAN 3
All PC's are in VLAN 2
All clients and servers have the default gateway of the local router's interface address. And the router is doing the routing between subnets.
No VTP is operational.
If you would like me to go through the VTP side of it, please tell me which PC's and servers should be in which VLAN. And only then I will be able to try and show you the difference between these.
Hope this helps
Please rate useful posts & remember to mark any solved questions as answered. Thank you.
Hello Marc,
VTP information can not be passed through the router. The requirement for this to work is a layer 2. i.e. your switches need to be connected to each other. It seems like you're trying to route between VLAN's and also do VTP at the same time.
I'll try to go through this in a easy way so you can understand what is required. This is bare minimal config for you to get end to end connectivity, so please don't mind if I take any existing configuration out. (Attached will be my version of the PKT file so you can see) There are two versions to this.
- Without VTP (Just router that is routing between subnets)
- With VTP - everything will need to change in terms of the topology
We'll start with option 1 - on R1. Your overall config seems fine, however I do want to mention that in a 'router on a stick' scenario you don't normally assign an IP to the physical interfaces themselves, you only assign active IP addresses on the Sub interfaces:
e.g. instead of this:
interface FastEthernet0/1
ip address 192.168.30.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1.2
encapsulation dot1Q 2
ip address 192.168.20.5 255.255.255.0
you do not need the address on fa0/1 you can just specify the sub interfaces address as you have done correctly for int Fa0/1.2
Since all of your PC's are in VLAN 2 we'll just have this:
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.2
encapsulation dot1Q 2
ip address 192.168.20.5 255.255.255.0
Subsequent to this I have removed the VLAN interfaces on the switch as they aren't serving any purpose interms of routing. However you can assign the SVI's back if you wish.
I also did the same for vlan 3 (your servers)
I noticed you are running EIGRP? You only have one router here so EIGRP isn't required. Your router knows about all subnets since they are connected subnets. And it will route between subnets if necessary.
Your default gateway was also misconfigured on the finance and web servers.
I have split this out so that all Servers are on VLAN 3
All PC's are in VLAN 2
All clients and servers have the default gateway of the local router's interface address. And the router is doing the routing between subnets.
No VTP is operational.
If you would like me to go through the VTP side of it, please tell me which PC's and servers should be in which VLAN. And only then I will be able to try and show you the difference between these.
Hope this helps
Please rate useful posts & remember to mark any solved questions as answered. Thank you.
Just thought I should do the VTP version too just so we can see the difference.
Here is the topology change that I was talking about in my previous post. Note that to get VTP to work we have to connect the switches together.
VTP packets are sent in either Inter-Switch Link (ISL) frames or in IEEE 802.1Q (dot1q) frames. Therefore the router could not 'carry' this for us like switches do. Its not like the role that the 'transparent mode' that switches can be.
SW1#show vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 255
Number of existing VLANs : 7
VTP Operating Mode : Server
VTP Domain Name : lungi
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x9A 0xE3 0x0A 0xC6 0x2B 0xB7 0x85 0x18
Configuration last modified by 192.168.20.4 at 3-1-93 02:29:35
Local updater ID is 0.0.0.0 (no valid interface found)
Switch#show vtp status
VTP Version : 2
Configuration Revision : 0
Maximum VLANs supported locally : 255
Number of existing VLANs : 7
VTP Operating Mode : Client
VTP Domain Name : lungi
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x9A 0xE3 0x0A 0xC6 0x2B 0xB7 0x85 0x18
Configuration last modified by 192.168.20.4 at 3-1-93 02:29:35
Router configuration:
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.2
encapsulation dot1Q 2
ip address 192.168.20.5 255.255.255.0
!
interface FastEthernet0/0.3
encapsulation dot1Q 3
ip address 172.16.10.5 255.255.255.0
The switches are not doing any routing and layer 3 is serving no purpose. hence I have left them out again. But you can include this in the configuration if you wish for things like telnet/SSH/TFTP access etc...
Example on how to configure VTP and more info here:
http://www.cisco.com/en/US/tech/tk389/tk689/technologies_configuration_example09186a0080890607.shtml
http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.shtml
Hope this helps
Please rate useful posts & remember to mark any solved questions as answered. Thank you.
