This works if the target VXLAN has a local IRB. Then, traffic will be VXLAN encapsulated (using the remote VNI). While the lab doesn't work on vQFX for some reason, it works on real hardware (a QFX5110 with 18.1R3-S2.5).
The ARP reply is received correctly on irb.584:
13:40:04.477461 In
Juniper PCAP Flags [Ext, In], PCAP Extension(s) total length 22
Device Media Type Extension TLV #3, length 1, value: Ethernet (1)
Logical Interface Encapsulation Extension TLV #6, length 1, value: Ethernet (14)
Device Interface Index Extension TLV #1, length 2, value: 641
Logical Interface Index Extension TLV #4, length 4, value: 551
Logical Unit Number Extension TLV #5, length 4, value: 584
-----original packet-----
50:54:33:00:00:0e > 02:05:86:71:45:00, ethertype 802.1Q (0x8100), length 60: vlan 584, p 0, ethertype ARP, arp reply 172.27.2.10 is-at 50:54:33:00:00:0e
QFX2 knows how to forward that:
juniper@QFX2# ...e destination 02:05:86:71:45:00 extensive bridge-domain vlan584
Routing table: default-switch.evpn-vxlan [Index 7]
Bridging domain: vlan584.evpn-vxlan [Index 3]
VPLS:
Enabled protocols: Bridging, ACKed by all peers, EVPN VXLAN,
Destination: 02:05:86:71:45:00/48
Learn VLAN: 0 Route type: user
Route reference: 0 Route interface-index: 572
Multicast RPF nh index: 0
P2mpidx: 0
IFL generation: 131 Epoch: 0
Sequence Number: 0 Learn Mask: 0x4000000000000000000000000000000000000000
L2 Flags: control_dyn
Flags: sent to PFE
Nexthop:
Next-hop type: composite Index: 1745 Reference: 7
Next-hop type: indirect Index: 131070 Reference: 3
Nexthop: 172.29.1.1
Next-hop type: unicast Index: 1744 Reference: 4
Next-hop interface: xe-0/0/1.0
The PFE also knows:
FXPC0(QFX2 vty)# show nhdb id 1745 extensive
ID Type Interface Next Hop Addr Protocol Encap MTU Flags PFE internal Flags
----- -------- ------------- --------------- ---------- ------------ ---- ------------------ ------------------
1745 Compst - - BRIDGE - 0 0x0000000000000000 0x0000000000000000
BFD Session Id: 0
Composite NH:
Function: Vxlan Encap NH with forwarding NH being Unicast
Hardware Index: 0x0
Composite flag: 0x0
Composite pfe flag: 0xe
Lower-level NH Ids: 131070
Derived NH Ids:
Vxlan data:
SIP = 0xac1d0102
DIP = 0xac1d0101
L3RTT = 0
SVTEP ifl = 555
proto = 2
RVTEP ifl = 572
VPFE: 0 PFE : 0 Port: 0 Flags: 0x0
Egress_NH: 131070 egr_dsc_install: 1 egr_dsc_install_mask: 0x1
Agg_member: 0 num_tags: 0 tokens_per_app: 2 n_cnhs = 0
L2 Rewrite[0]: 00
MPLS TAGS: num_of_tags = 0
Application type: "DEFAULT"
===================================================
for fe_id = 0, Ingress NH handle:
handle 0x207f28c0, flags 0x0, refcount 1
NH installed at addr NH 894, INT_SEQ 0x10001bf1
Raw dump of the nh words of size 1 words
0x100001b2
SEQ [100001b2] Interm, SIZE 1, NO_ACT 0, USE_REMAP 0, NEXT_ADDR: 00036, SZ: 2
Nexthop points to:
SEQ [10001be9] Interm, SIZE 2, NO_ACT 0, USE_REMAP 0, NEXT_ADDR: 0037d, SZ: 1
Nexthop points to:
SEQ [10001a09] Interm, SIZE 1, NO_ACT 0, USE_REMAP 0, NEXT_ADDR: 00341, SZ: 1
Nexthop points to:
SEQ [20280001] Final, SIZE 1, EGPRT_VAL 1, PRT_TYP 1, VPFE 000, GRPID 01,
Egress Next-hop on pfe inst 0:
------------------------------------
L2 descriptor
==============
des-type p_next Shared? Primary Last desc_count app-type des-addr
des-size des-size
-------- ----- ------- -------- -------- -------- -------- --------
Private No Yes(1 )0 4 1 0 0x31520
Des addrs : 0x31520
T: P_TUNNEL_ENCAP tun_ptr: 0, incL2Len = 20, incL3Len = 20
Tunnel tbl idx: 0 (Refcount: 1)
Hdr_type = TUN_HDR_TYPE_IPV4_UDP
Buff_seq = TUNNEL_BUFF_SEQ_TMPLT_MPLS_TUN
Write control Flags:
TUN_WR_CNTL_ERW_UDP_CONFIG_REGISTER[0]
Tunnel Encap buffer contents (num_of_bytes = 23):
buff[00] = 0xb5 buff[01] = 0x8e buff[02] = 0x00 buff[03] = 0x45 buff[04] = 0x00
buff[05] = 0x00 buff[06] = 0x00 buff[07] = 0x00 buff[08] = 0x00 buff[09] = 0x00
buff[10] = 0x00 buff[11] = 0x40 buff[12] = 0x11 buff[13] = 0xcd buff[14] = 0xce
buff[15] = 0xac buff[16] = 0x1d buff[17] = 0x01 buff[18] = 0x02 buff[19] = 0x00
buff[20] = 0x00 buff[21] = 0x00 buff[22] = 0x00
T:TUNNEL_IPV4_DIP tun_ipv4_dest: ac1d0101
F: P_NEXT p_next: 201921
Flabel descr for App "DEFAULT" Flabel_id: 323701:
============================================================
des-type p_next Shared? Primary Last desc_count app-type des-addr
des-size des-size
-------- ----- ------- -------- -------- -------- -------- --------
Public No No (0 )3 2 1 0 0x1495
Des addrs : 0x1495
Flabel : 323701 Segment table index: : 79[1] Page Table index : 144[9] desc start addr:: 5269[1]
F: COUNTER counter: 128971 cix_tc_en: 0
F: P_NEXT p_next: 202016
Egress Next-hop on pfe inst 0:
------------------------------------
L2 descriptor
==============
des-type p_next Shared? Primary Last desc_count app-type des-addr
des-size des-size
-------- ----- ------- -------- -------- -------- -------- --------
Private No Yes(1 )0 4 1 0 0x31524
Des addrs : 0x31524
F: TIX tix: 4
T: P_TUNNEL_ENCAP tun_ptr: 57, incL2Len = 20, incL3Len = 20
Tunnel tbl idx: 57 (Refcount: 1)
Hdr_type = TUN_HDR_TYPE_IPV4_UDP
Buff_seq = TUNNEL_BUFF_SEQ_TUN_TMPLT_MPLS
Write control Flags:
TUN_WR_CNTL_ERW_UDP_CONFIG_REGISTER[0]
Tunnel Encap buffer contents (num_of_bytes = 23):
buff[00] = 0x85 buff[01] = 0x8e buff[02] = 0x00 buff[03] = 0x45 buff[04] = 0x00
buff[05] = 0x00 buff[06] = 0x00 buff[07] = 0x00 buff[08] = 0x00 buff[09] = 0x00
buff[10] = 0x00 buff[11] = 0x40 buff[12] = 0x11 buff[13] = 0xcd buff[14] = 0xce
buff[15] = 0xac buff[16] = 0x1d buff[17] = 0x01 buff[18] = 0x02 buff[19] = 0x00
buff[20] = 0x00 buff[21] = 0x00 buff[22] = 0x00
T:TUNNEL_IPV4_DIP tun_ipv4_dest: ac1d0101
F: P_NEXT p_next: 201922
Flabel descr for App "DEFAULT" Flabel_id: 323698:
============================================================
des-type p_next Shared? Primary Last desc_count app-type des-addr
des-size des-size
-------- ----- ------- -------- -------- -------- -------- --------
Public No No (0 )3 2 1 0 0x1492
Des addrs : 0x1492
Flabel : 323698 Segment table index: : 79[1] Page Table index : 144[9] desc start addr:: 5266[1]
F: COUNTER counter: 128971 cix_tc_en: 0
F: P_NEXT p_next: 202020
ctr_idx 0x1f7cb, 2 pkts, 124 bytes
Routing-table id: 7