06-16-2006 01:26 AM - edited 03-03-2019 03:40 AM
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
Solved! Go to Solution.
06-16-2006 02:30 AM
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
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
06-16-2006 01:46 AM
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
* Please rate posts
06-16-2006 02:30 AM
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
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
06-18-2006 10:58 PM
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
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