Switching

Hi.

I have to MAC-VRF routing instances configured to use the same vlan-id. Commit fails due to duplicate vlan-ids as follows:

{master:0}[edit]
lab@LEAF1# commit 
[edit routing-instances tenant2 vlans]
  'v101'
    l2ald: MacVrf Duplicate vlan-id exists for vlan
[edit routing-instances tenant2 vlans]
  Failed to parse vlan hierarchy completely
error: configuration check-out failed

My question is:  Why is Junos complaining about duplicated VLAN IDs? Isn't the whole point of multiple MAC-VRF instances to reuse VLAN IDs?

Thanks,

Deepak

Configuration:

routing-instances {
    tenant1 {
        instance-type mac-vrf;
        protocols {
            evpn {
                encapsulation vxlan;
                extended-vni-list all;
            }
        }
        vtep-source-interface lo0.0;
        service-type vlan-based;
        route-distinguisher 172.31.2.3:1;
        vrf-target target:100:1;
        vlans {
            v101 {
                vlan-id 101;
                interface xe-0/0/2.101;
                vxlan {
                    vni 10101;
                }
            }
        }
    }
    tenant2 {
        instance-type mac-vrf;
        protocols {
            evpn {
                encapsulation vxlan;
                extended-vni-list all;
            }
        }
        vtep-source-interface lo0.0;
        service-type vlan-based;
        route-distinguisher 172.31.2.3:2;
        vrf-target target:100:2;
        vlans {
            v101 {
                vlan-id 101;
                interface xe-0/0/3.101;
                vxlan {
                    vni 10301;
                }
            }
        }
    }
}

Hi,
Can you please advise on hardware and software in charge?

I tested the same on ACX7024 and PTX10001-36MR - and your config is commited without any issues.
I also found the follwing interesting link (was not aware about this - so thanks to your q. I learned something new :))

https://www.juniper.net/documentation/us/en/software/junos/evpn/topics/concept/overlapping-vlans.html

Pay attention to: 

"In this situation, you can't use the same VLAN ID for two different tenants in separate MAC-VRF instances that share the same default forwarding instance. However, you can have a VLAN name with the same VLAN-ID (for example, vlan200 with VLAN ID 200) in two different MAC-VRF instances if they each have their own forwarding instances."

set routing-instances MAC-VRF1 forwarding-instance identifier 1

Hope you will find this useful.

BR,
Andrei