Layer3 Routing!!!!

[guruprasadr]

I am having a Layer 3 switch in my Environment. I am little bit confused how to enable Routing in L3 switch. I am going to use the L3 switch as a Routable device between my VLANS situated in L2 environment.

Can anyone help me in doing this?

Thanks in Advance.

Regards,

Guru Prasad.R

[leonvd79]

Hello Guru,

You can enable ip routing on a multilayer switch by entering "ip routing", if it is not already enabled.

To route between VLANs you need to create a switched virtual interface.

switch(config)#interface vlan109

switch(config-if#ip address 109.20.243.4 255.255.255.0

Repeat this task for every VLAN that requires Inter-VLAN routing.

HTH

--Leon

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[ankurbhasin · Accepted solution]

Hi Guru,

What you want is intervlan routing on layer 3 switch.

Now there must be some pure layer 2 switches on which you must be having vlans.

From that switch you connect your layer 3 switch and configure both the sides as trunk interface.

Now on layer 3 switch first enable "ip routing" command on global config mode.

Then create vlans first on your layer 3 switch and for those vlans create layer 3 interfaces which are logical interfaces and assign them an ip address.

You can configure layer 3 interfaces with command

interface vlan and then you will be in interface config mode and then assign an ip address

switch#config t

switch(config)#interface vlan

switch(config-if)#ip address

switch(config-if)#no shut

Also check this link for configuring intervlan routing on layer 3 switch

http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a008015f17a.shtml

HTH, if yes please rate the post.

Ankur

[guruprasadr]

Ankur,

Thanks for your help in replying my posting. The link helped me a lot and i got live experience how to configure a switched environment.

Your reply resolved my issue.

Thanks & Regards,

Guru Prasad.R