Create Layer 3 Ether Channel

[Fergal Meehan]

Hi,

Simple query...

Is it possible to to build a Layer 3 ether channel from two seperate physical switches (layer3) that are trunked together?

I know you can easily do this on a single switch and  on stacked switches which I've done but in this case the customer have  purchased two 3560X's which are not stackable yet want redundancy. The purpose of the etherchannel is to connect both switches to a private circuit provided by the hosted partner then route to the same setup in the DR location to different subnets.

If the above is possible I will explain further the scenario/solution I want to achieve.

Thanks

Fergal

[Reza Sharifi · Accepted solution]

Hi,

It is not possible with 3560X.  Only 3750 stack, 2960 stack and 6500 VSS.

HTH

[Fergal Meehan]

Thanks Reza,

With tha in mind and keeping the layer three can I setup both switch identically and have one uplink from each switch to the private circuit? also can I still have them trunked to pass all VLAN information?

[Reza Sharifi]

Hi,

Since you are doing layer-3 with the provider, you can connect each 3560 to a different circuit and then run a layer-3 link with /30 between the 3560s.

HTH

[Fergal Meehan]

yes routing between the datcentres with a /30 is my plan but there is only one circuit that the ISP can present two ports on either site.

should want to be clear how I can connect each switch and have them all routing over the same WAN.

I think I'll only be able to create one WAN off sw1 and just trunk sw2 off of sw1