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Setting up a 2811 as a VTP server with a 2950 as client

Answered Question
May 12th, 2010
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I've got a 2811 running 12.4(8) and a 2950 running (C2950-I6K2L2Q4-M), Version 12.1(22)EA8a.


i have been tinkering trying to get the 2811 connect to a cable modem, setting it up as a VTP server, and connecting the 2950 to it to access the VLAN's defined on the 2811.


does anyone have an example config for this type of configuration? dont have anything specific requirements, and just looking to learn and find out if its possible.

Correct Answer by Giuseppe Larosa about 7 years 3 months ago

Hello Danielle,

you can use the C2811 as router for intervlan routing with no problems


C2950:  vtp server or transparent you create here the required vlans example: 10,20,30


you configure a L2 trunk port to router port with


int f0/x

switchport

switchport mode trunk

no shut



C2811 side:

int f0/0

no ip address


int f0/0.10

enc dot1q 10

ip address 10.10.10.1 255.255.255.0

no shut

int f0/0.20

enc dot1q 20

ip address 10.10.20.1 255.255.255.0

int f0/0.30

enc dot1q 30

ip address 10.10.30.1 255.255.255.0


this is what you need and the C2811 will perform intervlan routing for users in the different vlans


Hope to help

Giuseppe

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Giuseppe Larosa Wed, 05/12/2010 - 23:45
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Hello Danielle,

be aware that  without an etherswitch module the C2811 would not support VTP at all.


if an etherswitch module is present on the router you can think of making it a VTP server (the module) and you need to connect it with a L2 trunk to the C2950 for successful VTP communication.


Hope to help

Giuseppe

TechnicallyCreative Thu, 05/13/2010 - 05:04
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ok, so scratch the VTP option, i've only got the two FE ports the unit comes with (no modules).


are their any other options to have the 2811 share vlans with a 2950?

Correct Answer
Giuseppe Larosa Thu, 05/13/2010 - 06:31
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

Hello Danielle,

you can use the C2811 as router for intervlan routing with no problems


C2950:  vtp server or transparent you create here the required vlans example: 10,20,30


you configure a L2 trunk port to router port with


int f0/x

switchport

switchport mode trunk

no shut



C2811 side:

int f0/0

no ip address


int f0/0.10

enc dot1q 10

ip address 10.10.10.1 255.255.255.0

no shut

int f0/0.20

enc dot1q 20

ip address 10.10.20.1 255.255.255.0

int f0/0.30

enc dot1q 30

ip address 10.10.30.1 255.255.255.0


this is what you need and the C2811 will perform intervlan routing for users in the different vlans


Hope to help

Giuseppe

Ganesh Hariharan Thu, 05/13/2010 - 03:12
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I've got a 2811 running 12.4(8) and a 2950 running (C2950-I6K2L2Q4-M), Version 12.1(22)EA8a.


i have been tinkering trying to get the 2811 connect to a cable modem, setting it up as a VTP server, and connecting the 2950 to it to access the VLAN's defined on the 2811.


does anyone have an example config for this type of configuration? dont have anything specific requirements, and just looking to learn and find out if its possible.


Hi,


As suggested you need to have ethernet switching module in cisco 2811 like HWIC-4ESW and NM-ESW-16 to have switching funcationality.


Hope to Help !!


Ganesh.H

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