For the QFX5110 specifically, MAC-VRF is supported:
https://apps.juniper.net/feature-explorer/feature-info.html?fKey=9788&fn=MAC+VRF+with+EVPN-VXLAN

But IPv6 underlay is not:
https://apps.juniper.net/feature-explorer/feature-info.html?fKey=11165&fn=EVPN-VXLAN+fabric+with+an+IPv6+underlay

So maybe it's an ASIC limitation as QFX5110 is using Trident 2+ and
QFX5120/EX4400 is using Trident 3.

Regards
Roger



On Tue, Nov 28, 2023 at 3:48 PM Roger Wiklund <roger.wikl...@gmail.com>
wrote:

> Hey
>
> You're interpreting the default switch limitation incorrectly.
>
> It doesn't mean the QFX5120 can't support MAC-VRFs, it means even if you
> implement MAC-VRFs you still only have a single switch domain and can't
> have overlapping VLANs in the different MAC-VRFs. (MX does not have this
> limitation. It supports 32k VLANs)
>
> IPv6 underlay is supported on QFX5120 in MAC-VRF from Junos 21.2R2:
> Explore Features by Product | Juniper Networks Pathfinder Feature Explorer
> <https://apps.juniper.net/feature-explorer/select-platform.html?typ=1&category=Switching&pid=31705120&platform=QFX5120-48Y&swName=Junos%20OS&rel=23.2R1&sid=1277&swtab=Junos%20OS>
>
> You can configure an EVPN-VXLAN fabric with an IPv6 underlay. You can use
> this feature only with MAC-VRF routing instances (all service types). You
> must configure either an IPv4 or an IPv6 underlay across the EVPN instances
> in the fabric; you can’t mix IPv4 and IPv6 underlays in the same fabric.
> To enable this feature, include these steps when you configure the EVPN
> underlay:
> • Configure the underlay VXLAN tunnel endpoint (VTEP) source interface as
> an IPv6 address:
> • Even though the underlay uses the IPv6 address family, for BGP
> handshaking to work in the underlay, you must configure the router ID in
> the routing instance with an IPv4 address:
> • Enable the Broadcom VXLAN flexible flow feature, release where the
> feature is not enabled by default:
> We support the following EVPN-VXLAN features with an IPv6 underlay:
> • EVPN Type 1, Type 2, Type 3, Type 4, and Type 5 routes(excluding EX9200
> for type 5).
> • Shared VTEP tunnels (required with MAC-VRF instances).
> • All-active multihoming, including Ethernet segment ID (ESI)
> auto-generation and preferencebased DF (DF) election.
> • EVPN core isolation.
> • Bridged overlays.
> • Layer 3 gateway functions in ERB and CRB overlays with IPv4 or IPv6
> traffic.
> • Underlay and overlay load balancing.
> • Layer 3 protocols over IRB interfaces—BFD, BGP, OSPF.
> • Data center interconnect (DCI)—over-the-top (OTT) full mesh only.
> • EVPN proxy ARP and ARP suppression, and proxy NDP and NDP suppression.
>
> Regards
> Roger
>
> On Mon, Nov 27, 2023 at 11:31 AM Denis Fondras via juniper-nsp <
> juniper-nsp@puck.nether.net> wrote:
>
>> Hello,
>>
>> Thank you very much everyone for the help.
>>
>> It seems that `netraven` nailed it.
>> I missed the part where QFX5110 could not support multiple forwarding
>> instances.
>>
>> I will have to go back to the legacy protocol then :/
>> Replacing IPv6 addresses with IPv4 addresses, keeping the same config,
>> worked on
>> first try.
>>
>> Thank you again !
>> Denis
>>
>>
>> Le Mon, Nov 27, 2023 at 10:52:52AM +0100, netravnen+nspl...@gmail.com a
>> écrit :
>> > Dennis,
>> >
>> > On Sat, 25 Nov 2023 at 15:26, Denis Fondras via juniper-nsp
>> > <juniper-nsp@puck.nether.net> wrote:
>> > > Can you give a clue ? I haven't found any information on wether it
>> could work on
>> > > QFX5110.
>> >
>> > Looking at the two pages below.
>> > 1. The QFX5120 (assuming this also applies to the QFX5120-32C model)
>> > *only* supports the default-switch forwarding instance.
>> > 2. And IPv6 underlays seem to be *exactly not* supported for the
>> > default-switch forwarding instance.
>> >
>> > If I take this from what it reads. It looks like you cannot archive
>> > what you are trying atm.
>> >
>> > Try asking JTAC to confirm this?
>> >
>> > From:
>> >
>> https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/concept/mac-vrf-routing-instance-overview.html#xd_4081e20476f017c2--1e138ae7-1795628658a--7dbc__subsection_mac-vrf-service-types
>> > """
>> > EX4400, QFX5100, QFX5110, QFX5120, QFX5200, QFX5130-32CD, and QFX5700
>> > switches, and PTX10001-36MR, PTX10004, PTX10008, PTX10016 routers
>> > These devices support only one forwarding instance (default-switch).
>> (...)
>> > """
>> >
>> > From:
>> >
>> https://www.juniper.net/documentation/us/en/software/junos/evpn-vxlan/topics/topic-map/vxlan-ipv6-underlay-overview.html
>> > """
>> > (QFX Series switches) You must use MAC-VRF routing instances with EVPN
>> > protocol and VXLAN encapsulation. We don't support IPv6 underlays with
>> > other instance types such as evpn, evpn-vpws, virtual-switch or the
>> > default switching instance.
>> > """
>> _______________________________________________
>> juniper-nsp mailing list juniper-nsp@puck.nether.net
>> https://puck.nether.net/mailman/listinfo/juniper-nsp
>>
>
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