Symptom
Stale BGP evpn Type-2 routes found on L2VTEPs for previously learnt prefixes. Tried the Host move scenarios between L2VTEP and DAG VTEPs and it is found that sometimes after stopping the hosts though the entry is not present in the EVPN-MGR/mac-table/SISF bgp was still holding & advertising this route to the remote VTEPs which is not expected.
VTEP1#show mac address-table vlan 1101
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
VTEP1#show l2vpn evpn mac ip evi 1101 >>> No evpn routes
IP Address EVI VLAN MAC Address Next Hop(s)
------------------------- ----- ----- -------------- -------------------------
VTEP1#
*Oct 29 05:40:41.422: %SYS-6-LOGOUT: User dnac1 has exited tty session 3(10.106.23.101)sho
VTEP1#show bgp l2vpn evpn route-type 2 | beg 172.16.
VTEP1#show bgp l2vpn evpn route-type 2 | beg 172.16.1.2 >>>>> Issue.BGP Was Stil Holding reference
BGP routing table entry for [2][1.1.1.1:1101][0][48][007601000002][32][172.16.1.2]/24, version 7841698
Paths: (1 available, best #1, table evi_1101)
Advertised to update-groups:
9
Refresh Epoch 1
Local
:: (via default) from 0.0.0.0 (1.1.1.1)
Origin incomplete, localpref 100, weight 32768, valid, sourced, local, best
EVPN ESI: 00000000000000000000, Label1 11101
Extended Community: RT:1101:1 ENCAP:8 EVPN MAC:Seq-1
Local irb vxlan vtep:
vrf:not found, l3-vni:0
local router mac:0000.0000.0000
core-irb interface:(not found)
vtep-ip:1.1.1.1
VTEP1
VTEP1#show device-tracking database vlanid 1101 >>>> NO SISF entry
ARP 172.16.1.1 0076.0100.0001 Hu1/0/52 1101 0005 8mn DOWN 89627 s try 0
VTEP1#
Once it is entered into this state need to unconfigure/configure the VNI to recover.
