Create subinterface

keynet · ‎05-12-2009

Hello

I have a catalyst 3750 switch with version c3750-advipservicesk9-mz.122-46.SE.bin installed. Now I would like to configure vrf-lite. I have made all the configuration for vrf and ospf. For the connection to the next router I configured a port as no switchport. Now I tried to configure a subinterface. I always got an error like

PM5(config)#inter gig 1/0/3.10

^

% Invalid input detected at '^' marker.

Is there anything wrong in my configuration or do I have a wrong image file on the switch?

thank you for your help

regards,

Alex

davy.timmermans · ‎05-12-2009

I'm not sure but I think it's not possible.

If it's not supported you've to work with SVI's instead and using a trunk

guruprasadr · ‎05-12-2009

HI, [Pls RATE if HELPS]

By default, the Catalyst 3750 or 3550 is a switch performing L2 functions and has L3 unicast routing disabled. You can enable this function by issuing the 'ip routing' global command.

If you want to convert any port to a L3 port, issue the 'no switchport' command. Do not configure Ethernet sub-interfaces on a switch. Configure it as a trunk, and terminate the L3 IP interface on a Switched Virtual Interface (SVI).

Hope I am Informative.

Pls RATE if HELPS

Best Regards,

Guru Prasad R