I am labbing to learn eBGP underlay for EVPN so i did create following lab
Spine: 65000
Leaf-1:65001
Leaf-2:65002
## spine
router bgp 65000
log-neighbor-changes
address-family ipv4 unicast
redistribute direct route-map TAG-UL
address-family l2vpn evpn
nexthop route-map NH-UNCH
retain route-target all
neighbor 10.1.1.1
remote-as 65001
address-family ipv4 unicast
neighbor 10.1.2.1
remote-as 65002
address-family ipv4 unicast
neighbor 10.255.1.1
remote-as 65001
update-source loopback0
ebgp-multihop 3
address-family l2vpn evpn
disable-peer-as-check
send-community
route-map NH-UNCH out
rewrite-evpn-rt-asn
neighbor 10.255.2.1
remote-as 65002
update-source loopback0
ebgp-multihop 3
address-family l2vpn evpn
disable-peer-as-check
send-community
route-map NH-UNCH out
rewrite-evpn-rt-asn## leaf-1 and leaf-2 pretty similar except router-ID and peer IP
router bgp 65001
log-neighbor-changes
address-family ipv4 unicast
redistribute direct route-map TAG-UL
neighbor 10.1.1.0
remote-as 65000
address-family ipv4 unicast
neighbor 10.255.255.1
remote-as 65000
update-source loopback0
disable-connected-check
ebgp-multihop 3
address-family l2vpn evpn
disable-peer-as-check
send-community
send-community extended
rewrite-evpn-rt-asn
!
evpn
vni 10010 l2
rd auto
route-target import auto
route-target export auto## I have two server connected to leaf in 10010 VNI and spine BGP can see them in routing table
spine-1# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 475, Local Router ID is 10.255.255.1
Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best
Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-i
njected
Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - b
est2
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 10.255.1.1:32777
*>e[2]:[0]:[0]:[48]:[5254.0014.e6b8]:[0]:[0.0.0.0]/216
10.254.1.1 0 65001 i
*>e[3]:[0]:[32]:[10.254.1.1]/88
10.254.1.1 0 65001 i
Route Distinguisher: 10.255.2.1:32777
*>e[2]:[0]:[0]:[48]:[5254.0019.9dcb]:[0]:[0.0.0.0]/216
10.254.2.1 0 65002 i
*>e[3]:[0]:[32]:[10.254.2.1]/88
10.254.2.1 0 65002 i## i am getting BGP update error on leaf saying RT policy reject and its not installing routers in FIB
leaf-1# show bgp l2vpn evpn
BGP routing table information for VRF default, address family L2VPN EVPN
BGP table version is 175, Local Router ID is 10.255.1.1
Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best
Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-i
njected
Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - b
est2
Network Next Hop Metric LocPrf Weight Path
Route Distinguisher: 10.255.1.1:32777 (L2VNI 10010)
*>l[2]:[0]:[0]:[48]:[5254.0014.e6b8]:[0]:[0.0.0.0]/216
10.254.1.1 100 32768 i
*>l[3]:[0]:[32]:[10.254.1.1]/88
10.254.1.1 100 32768 i## BGP error on leaf-1 (10.255.255.1 is spine Loopback)
2020 Aug 7 13:52:29.759596 bgp: [14564] (default) UPD: [L2VPN EVPN] 10.255.255.1 Inbound import RT check action deny 2020 Aug 7 13:52:29.759906 bgp: [14564] (default) UPD: Received ESI 0000.0000.0000.0000.0000 for route type 2 from peer 10.255.255.1
2020 Aug 7 13:52:29.759957 bgp: [14564] (default) UPD: [L2VPN EVPN] Received rd 10.255.2.1:32777 prefix [2]:[0]:[0]:[48]:[5254.0019.9dcb]:[0]:[0.0.0.0]/112 from peer 10.255.255.1, origin 0, next hop 10.254.2.1, localpref 0, med 0 2020 Aug 7 13:52:29.759987 bgp: [14564] (default) UPD: [L2VPN EVPN] Dropping prefix [2]:[0]:[0]:[48]:[5254.0019.9dcb]:[0]:[0.0.0.0]/112 from peer 10.255.255.1, due to attribute policy rejected
