Re: [Testbed-admins] How to set up 'Layer 3 switching' in Cisco switch?

[Mike Hibler <mike@flux.utah.edu>]

To do this your switch needs to have a layer-3 routing capability.
Our 6509 control net switch has an add-on card that provides routing
and filtering.

If you don't have this ability, then you will have to make your control
network a single LAN.

On Fri, Aug 28, 2009 at 04:08:20PM -0500, Cheng Cui wrote:
> Hello,
> 
> I am configuring one of our Cisco 3560E switch as the Emulab control
> switch (non-routable control network version). We do not use VTP. As we
> are following the divided network designed by Utah, we made the vlans in
> control switch as follows:
> 
> # Complete (overall):		192.168.0/22
> # "public" segment:		192.168.3/24		--ops
> # "private" segment:		192.168.2/24		--boss
> # "node control segment:	192.168.0/23 
> # (aka: 192.168.0/24		--IP controllable devices, e.g. power
> controller, switch IP interfaces as well as a second interface on the
> boss node (control router's ip: 192.168.0.1)
> # 192.168.1/24)	--control net of all experimental nodes
> 
> #
> # The node control network segment. In vlan 2
> #
> CONTROL_ROUTER_IP=192.168.0.1
> CONTROL_NETWORK=192.168.0.0
> CONTROL_NETMASK=255.255.254.0
> 
> #
> # The private network segment. In vlan 3
> #
> PRIVATE_NETWORK=192.168.2.0
> PRIVATE_ROUTER=192.168.2.1
> PRIVATE_NETMASK=255.255.255.0
> 
> #
> # The public network segment. In vlan 4
> #
> PUBLIC_NETWORK=192.168.3.0
> PUBLIC_ROUTER=192.168.3.1
> PUBLIC_NETMASK=255.255.255.0
> 
> However, I could not make the inter-vlan (aka: layer 3 switching)
> routing successfully. For example, I can't ping ops from boss, reverse
> way neither. I have looked at your Utah Emulab topology and I did not
> see any real router exists. Can you tell me how you implemented layer 3
> switching? How do you assign the Default Gateway in control switch?
> 
> Please correct me if I made any mistakes. Thanks.
> 
> Best Regards,
> 
> Cheng Cui
> . Frey Computing Services Center . Baton Rouge, LA 70803
> 
> 
> _______________________________________________
> Testbed-admins mailing list
> Testbed-admins@flux.utah.edu
> http://www.flux.utah.edu/mailman/listinfo/testbed-admins