L3 Switch to Router

Answered Question
May 26th, 2008
User Badges:

Hi all,

a simple question i guess..but need confirmation..we have configured vlans on my l3 switch and this is connected to a router. l3 switch is configured for ip routing.


Here are the below configurations.

For switch this is configured..

interface FastEthernet0/3

description TRANSIT VLAN

switchport access vlan 70

switchport mode access

!

interface Vlan70

description transit

ip address 10.191.28.8 255.255.255.240

This is fa0/3 port is connected to router with below config

interface FastEthernet1/0/3

no switchport

ip address 10.191.28.2 255.255.255.240

speed 100

duplex full

no cdp enable


my question is, Is the transit vlan really required?shouldn't it be just like a normal "no switchport" in the switch fa0/3 with ip address configured??does the current config have any advantages..

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Correct Answer

Zanub,


The only real good reason I would use a transit VLAN would be for synamic routing - but I guess you could use it for anything you want.


If your situation - it does not really enhance your network. I would turn fa0/3 into a normal switch port - and let the router talk to the l3 interface in the switch.

Actions

This Discussion