Here is my topolog and have different VLAN's and the layer3 switch is the VTP server. The conection are group by PAgP protocol.
Now i want to setup intervlan routing with the hlep of layer3 switch, but i don't see such option on "interface portchannel 1" to create sub-interfaces.
Now on which ports should i configure sub-interfaces, in order to get the inter vlan routing.
Thanks a lot in advance.
First you have to enable IP Routing on the L3 capable switch:
Then you have to create an SVI (Switched Virtual Interfaces) for each Vlan that you want to enable routing for:
#interface vlan 10
#description VLAN 10 SVI
#ip address 10.10.10.1 255.255.255.0
In order for the SVI to be in an 'up/up' state, you need to make sure your trunk links to the downstream switch allow this Vlan across them.
Finally, your hosts in Vlan 10 need to have the IP address of the SVI as their default gateway which can be done statically or via DHCP.
Hope this helps