Symptom

When the command "clear device-tracking database address x.x.x.x" is issued, the SVI entry gets deleted from the SISF table. Fabric_Edge-8#sh device-tracking database | i Vl L x.13.0.1 0000.0c9f.f466 Vl1031 1031 0100 1570mn REACHABLE L x.12.0.1 0000.0c9f.f465 Vl1030 1030 0100 1572mn REACHABLE L x.11.0.1 0000.0c9f.f45d Vl1022 1022 0100 1570mn REACHABLE L x.10.100.1 0000.0c9f.f460 Vl1025 1025 0100 1570mn REACHABLE L x.10.50.1 0000.0c9f.f45c Vl1021 1021 0100 1572mn REACHABLE L x.10.10.1 0000.0c9f.f462 Vl1027 1027 0100 1570mn REACHABLE Fabric_Edge-8#clear device-tracking database address x.13.0.1 Fabric_Edge-8#sh device-tracking database | i Vl L x.12.0.1 0000.0c9f.f465 Vl1030 1030 0100 1572mn REACHABLE L x.11.0.1 0000.0c9f.f45d Vl1022 1022 0100 1571mn REACHABLE L x.10.100.1 0000.0c9f.f460 Vl1025 1025 0100 1571mn REACHABLE L x.10.50.1 0000.0c9f.f45c Vl1021 1021 0100 1572mn REACHABLE L x.10.10.1 0000.0c9f.f462 Vl1027 1027 0100 1571mn REACHABLE

Conditions

Note: Issue only occurs on switches. Routers are not impacted Conditions on a switch: 1:Device-tracking is enabled on a vlan. sisf-c9500-vtep-2#show device-tracking policies Target Type Policy Feature Target range vlan 11 VLAN sisf-DT-policy Device-tracking vlan all 2. SVI is configured with IPv4 or IPv6 address. show running-config interface vl11 Building configuration... Current configuration : 149 bytes ! interface Vlan11 mac-address aabb.cc00.01ff ip address 192.168.1.100 255.255.255.0 ipv6 address 2001:192:168:1::100/64 end Switch#show device-tracking database VPC role NONE VPC state CREATING Binding Table has 3 entries, 0 dynamic (limit 100) Codes: L - Local, S - Static, ND - Neighbor Discovery, ARP - Address Resolution Protocol, DH4 - IPv4 DHCP, DH6 - IPv6 DHCP, PKT - Other Packet, API - API created Preflevel flags (prlvl): 0001:MAC and LLA match 0002:Orig trunk 0004:Orig access 0008:Orig trusted trunk 0010:Orig trusted access 0020:DHCP assigned 0040:Cga authenticated 0080:Cert authenticated 0100:Statically assigned Network Layer Address Link Layer Address Interface vlan prlvl age state Time left L 192.168.1.100 aabb.cc00.01ff Vl11 11 0100 135mn REACHABLE L FE80::A8BB:CCFF:FE00:1FF aabb.cc00.01ff Vl11 11 0100 135mn REACHABLE L 2001:192:168:1::100 aabb.cc00.01ff Vl11 11 0100 135mn REACHABLE 3. To reproduce, user type the following cli: clear device-tracking database address 192.168.1.100 clear device-tracking database address FE80::A8BB:CCFF:FE00:1FF clear device-tracking database address 2001:192:168:1::100 clear device-tracking database mac aabb.cc00.01ff clear device-tracking database interface vlan11 vlan 11 symptoms: show device-tracking database the entries were removed from device-tracking database

Workaround

Remove and add back the SVI IP addresses #conf t (config)#int vl11 (config-if)#no ip address 192.168.1.100 255.255.255.0 (config-if)#ip address 192.168.1.100 255.255.255.0 (config-if)#no ipv6 address 2001:192:168:1::100/64 (config-if)#ipv6 address 2001:192:168:1::100/64 (config-if)#end Note: shut and no shut SVI do not help.

Further Problem Description