This is similar to lab-juniper-vqfx-vxlan-asymmetric but it uses an
L3 EVPN service instead. Type-5 routes are advertised and there is no
need to declare the IRB on all the VTEP:
juniper@QFX1> show route receive-protocol bgp 172.29.1.2
inet.0: 8 destinations, 9 routes (8 active, 1 holddown, 0 hidden)
VRF-OVERLAY.inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
:vxlan.inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)
inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
VRF-OVERLAY.inet6.0: 1 destinations, 1 routes (1 active, 0 holddown, 0 hidden)
bgp.evpn.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Prefix Nexthop MED Lclpref AS path
4:172.29.1.2:0::010400000000000019:172.29.1.2/296 ES
* 172.29.1.2 100 I
5:172.29.1.2:1::0::172.27.2.0::24/248
* 172.29.1.2 100 I
VRF-OVERLAY.evpn.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
Prefix Nexthop MED Lclpref AS path
5:172.29.1.2:1::0::172.27.2.0::24/248
* 172.29.1.2 100 I
default-switch.evpn.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
__default_evpn__.evpn.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
Prefix Nexthop MED Lclpref AS path
4:172.29.1.2:0::010400000000000019:172.29.1.2/296 ES
* 172.29.1.2 100 I
We can see the route is correctly installed into VRF-OVERLAY VRF:
juniper@QFX1> show route table VRF-OVERLAY 172.27.2.10 extensive
VRF-OVERLAY.inet.0: 6 destinations, 6 routes (6 active, 0 holddown, 0 hidden)
172.27.2.0/24 (1 entry, 1 announced)
TSI:
KRT in-kernel 172.27.2.0/24 -> {composite(1765)}
*EVPN Preference: 170/-101
Next hop type: Indirect, Next hop index: 0
Address: 0xdd02270
Next-hop reference count: 2
Next hop type: Router, Next hop index: 1761
Next hop: 172.29.1.2 via xe-0/0/1.0, selected
Session Id: 0x0
Protocol next hop: 172.29.1.2
Composite next hop: 0xc9ae0e0 1765 INH Session ID: 0x0
VXLAN tunnel rewrite:
MTU: 0, Flags: 0x0
Encap table ID: 0, Decap table ID: 4
Encap VNI: 9001, Decap VNI: 9001
Source VTEP: 172.29.1.1, Destination VTEP: 172.29.1.2
SMAC: 02:05:86:71:e1:00, DMAC: 02:05:86:71:be:00
Indirect next hop: 0xba77d70 131070 INH Session ID: 0x0
State: <Active Int Ext>
Age: 7:40 Metric2: 1
Validation State: unverified
Task: VRF-OVERLAY-EVPN-L3-context
Announcement bits (1): 2-KRT
AS path: I
Composite next hops: 1
Protocol next hop: 172.29.1.2 Metric: 1
Composite next hop: 0xc9ae0e0 1765 INH Session ID: 0x0
VXLAN tunnel rewrite:
MTU: 0, Flags: 0x0
Encap table ID: 0, Decap table ID: 4
Encap VNI: 9001, Decap VNI: 9001
Source VTEP: 172.29.1.1, Destination VTEP: 172.29.1.2
SMAC: 02:05:86:71:e1:00, DMAC: 02:05:86:71:be:00
Indirect next hop: 0xba77d70 131070 INH Session ID: 0x0
Indirect path forwarding next hops: 1
Next hop type: Router
Next hop: 172.29.1.2 via xe-0/0/1.0
Session Id: 0x0
172.29.1.2/32 Originating RIB: inet.0
Metric: 1 Node path count: 1
Forwarding nexthops: 1
Nexthop: 172.29.1.2 via xe-0/0/1.0
Session Id: 0
Note the destination VTEP and the encap/decap VNI. The route is also present in the FIB:
juniper@QFX1> show route forwarding-table table VRF-OVERLAY destination 172.27.2.10 extensive
Routing table: VRF-OVERLAY.inet [Index 4]
Internet:
Enabled protocols: Bridging, All VLANs,
Destination: 172.27.2.0/24
Route type: user
Route reference: 0 Route interface-index: 0
Multicast RPF nh index: 0
P2mpidx: 0
Flags: sent to PFE
Nexthop:
Next-hop type: composite Index: 1765 Reference: 2
Next-hop type: indirect Index: 131070 Reference: 2
Nexthop: 172.29.1.2
Next-hop type: unicast Index: 1761 Reference: 4
Next-hop interface: xe-0/0/1.0
We can ask the FPC (start shell pfe network fpc0) for more details
on the composite route (but mostly, we also see the details in the
previous show route command):
FXPC0(QFX1 vty)# show nhdb id 1765 extensive
ID Type Interface Next Hop Addr Protocol Encap MTU Flags PFE internal Flags
----- -------- ------------- --------------- ---------- ------------ ---- ------------------ ------------------
1765 Compst - - IPv4 - 0 0x0000000000000000 0x0000000000000000
BFD Session Id: 0
Composite NH:
Function: Tunnel Function
Hardware Index: 0x0
Composite flag: 0x0
Composite pfe flag: 0xe
Lower-level NH Ids: 131070
Derived NH Ids:
Tunnel Data:
Type : VXLAN
Tunnel ID: 806354944
Encap VRF: 0
Decap VRF: 4
MTU : 0
Flags : 0x0
AnchorId : 0
Encap Len: 53
Encap : 0x01 0x01 0x01 0x1d 0xac 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x02 0x01 0x1d 0xac 0x00 0x00 0x00
0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
0x00 0x29 0x23 0x00 0x00 0x29 0x23 0x00
0x00 0x02 0x05 0x86 0x71 0xbe 0x00 0x02
0x05 0x86 0x71 0xe1 0x00
Data Len : 0
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: 1 n_cnhs = 0
L2 Rewrite[0]: 00
MPLS TAGS: num_of_tags = 0
Application type: "DEFAULT"
===================================================
for fe_id = 0, Ingress NH handle:
handle 0x207b9990, flags 0x0, refcount 1
NH installed at addr NH 833, INT_SEQ 0x10001a09
Raw dump of the nh words of size 1 words
0x10000203
SEQ [10000203] Interm, SIZE 1, NO_ACT 0, USE_REMAP 0, NEXT_ADDR: 00040, SZ: 3
Nexthop points to:
SEQ [10001bf1] Interm, SIZE 3, NO_ACT 0, USE_REMAP 0, NEXT_ADDR: 0037e, SZ: 1
Nexthop points to:
SEQ [10001a01] Interm, SIZE 1, NO_ACT 0, USE_REMAP 0, NEXT_ADDR: 00340, 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 fe_id 0:
------------------------------------
ctr_idx 0x1f7cf, 1370 pkts, 142480 bytes
L2 descriptor
==============
des-type p_next Shared? Primary Last desc_count app-type des-addr
des-size des-size
-------- ----- ------- -------- -------- -------- -------- --------
Private No Yes(1 )0 6 1 0 0x31573
Des addrs : 0x31573
F: TIX tix: 4
F: P_CONST bv_flags: 2 address: 12
[ 12] Refcount 98 SMAC 02:05:86:71:e1:00
T: DMAC dmac: 000002058671be00
T: P_TUNNEL_ENCAP tun_ptr: 61, incL2Len = 20, incL3Len = 20
Tunnel tbl idx: 61 (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] = 0xcf
buff[15] = 0xac buff[16] = 0x1d buff[17] = 0x01 buff[18] = 0x01 buff[19] = 0x00
buff[20] = 0x00 buff[21] = 0x00 buff[22] = 0x00
T:TUNNEL_IPV4_DIP tun_ipv4_dest: ac1d0102
F: P_NEXT p_next: 201983
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[6] desc start addr:: 5269[1]
F: COUNTER counter: 128975 cix_tc_en: 0
F: P_NEXT p_next: 202099
Routing-table id: 0
We can spot VNI 9001 as 0x23 0x29 bytes in the encap data.