[j-nsp] QFX5110 : Q-in-Q in VXLAN

[Brian Rak]

Are you trying to push multiple .1q tags onto the VXLAN traffic? 
(meaning you're trying to add a C-VLAN *and* a S-VLAN)?

If so, JTAC has told me that QFX series devices (apparently the entire 
line...) do not support adding multiple .q1 tags

On 9/10/2018 2:32 PM, Olivier FRUQUET wrote:
> Hello,
>
> We've got an IP fabric composed with 2 MX204 routers as cores, 2 QFX5110
> switches as Provider Edges, and 2 EX2300 as Customer Edges.
> The MX and the QFX communicate together with BGP underlay and overlay
> groups, the overlay group use evpn signaling.
> Everything to run fine except when we want to make Q-in-Q vlans transiting
> through the VXLAN tunnel (only one VNI : 1001).
> The Q-in-Q encapsulation comes from the EX2300 switches to the QFX switches
> (the S-VLAN Q-in-Q tag is also 1001), but on the other end of the tunnel we
> don't have the Q-in-Q frames coming.
> We tested some scenarios : for example when we stop the Q-in-Q and just
> putting VLAN 1001 tagged from the CE switches, the ping is OK through the
> VXLAN tunnel.
> We used the pattern 3 from your documentation on the Juniper's website :
> https://www.juniper.net/documentation/en_US/junos/topics/topic-map/evpn-vxlan-flexible-vlan-tag.html
>
> Do you have some ideas ?
> Thank you !
> Olivier
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