Wired Intelligent Edge

Hello Community,

I started to learn the Aruba CLI, after I managed to work on Huawei VRP and Cisco, but because of it the CLI configuration is weird at least to me, because I find rarly or rather no example topologies on the internet for the Aruba CX platform and even worse a lot of the CX Platform looks like trimmed to be used in combination of stacks, Virtual Routing Instances and virtual port-based configuration. That's why even the simple configuration of dot1q Intervlan Routing gives me a hard time. Because apparently I can't find the dot1q termination on the interface neither subinterface can be configured.

Is their anyone that can give me an example CLI configuration of a SW Layer 3 on a Stick configuration with Intervlan Routing?

____                     ____
| CX2|--VLAN20--| CX1 |
|____|--VLAN30--|_____|
^                ^               ^
|                 |                |
L2             dot1q         L3

Access     1/1/1          SVI Routing


Basic topology above

CX2 provides layer 2 access and trunking of vlans 20 & 30 on interface 1/1/1

hostname cx2
!
ssh server vrf mgmt
vlan 1,20,30
interface mgmt
no shutdown
ip dhcp
interface 1/1/1
no shutdown
no routing
vlan trunk native 1
vlan trunk allowed 20,30
interface 1/1/2
no shutdown
no routing
vlan access 20
interface 1/1/3
no shutdown
no routing
vlan access 30

CX1 provides layer3 termination point based on SVI as well as trunking  vlans 20 & 30 on 1/1/1

hostname cx1
!
ssh server vrf mgmt
vlan 1,20,30
interface mgmt
no shutdown
ip dhcp
interface 1/1/1
no shutdown
no routing
vlan trunk native 1
vlan trunk allowed 20,30
interface vlan 20
ip address 20.1.1.254/24
interface vlan 30
ip address 30.1.1.254/24

A device connected to CX 2 on port 1/1/2 with ip 20.1.1.1/24 DG 20.1.1.254

will be able to communicate with

A device conncted to CX 2 on port 1/1/3 with ip 30.1.1.1/24 DG 30.1.1.254

The routing will be carried out on CX1

Thanks a lot for your help, your example configuration worked out for me to understand the difference, even if I think that the configuration is really weird, if someone just worked with Cisco iOS, Huawei VRP and Nokia TimOS, because the dot1q termination happens automatically and there are no subinterfaces.

I think this video, and the Aruba OS CX Basics series on the Airheads Broadcasting Channel may be very useful in this case.