Symptom

after shut/no shut vpc peer link on no matter vpc-primary or vpc-secondary, and all extended vlan will be suspended. you can refer below for details, VPC-Primary# show otv OTV Overlay Information Site Identifier 0000.0000.0002 Overlay interface Overlay17 VPN name : Overlay17 VPN state : UP Extended vlans : 2 4-6 10-11 14 30-37 39 85 87 93 95-97 136-137 528-534 56 0 592-597 (Total:38) Join interface(s) : Eth3/17 (192.168.3.17) Site vlan : 399 (up) AED-Capable : No (No extended vlan operationally up) Capability : Unicast-Only Is Adjacency Server : Yes Adjacency Server(s) : 192.168.3.17 / 192.168.3.19 VPC-Secondary#show otv OTV Overlay Information Site Identifier 0000.0000.0002 Overlay interface Overlay17 VPN name : Overlay17 VPN state : UP Extended vlans : 2 4-6 10-11 14 30-37 39 85 87 93 95-97 136-137 528-534 56 0 592-597 (Total:38) Join interface(s) : Eth3/18 (192.168.3.18) Site vlan : 399 (up) AED-Capable : No (No extended vlan operationally up) Capability : Unicast-Only Is Adjacency Server : Yes Adjacency Server(s) : 192.168.3.17 / 192.168.3.19 ================================================================ VPC-Primary# show log last 10 2015 Sep 6 06:07:55 VPC-Primary %ETHPORT-5-IF_UP: Interface port-channel4096 is up in mode trunk 2015 Sep 6 06:07:55 VPC-Primary %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel4096,bandwidth changed to 2000000 Kbit 2015 Sep 6 06:07:55 VPC-Primary %ETHPORT-5-IF_UP: Interface Ethernet4/2 is up in mode trunk 2015 Sep 6 06:07:57 VPC-Primary %ETHPORT-3-IF_ERROR_VLANS_REMOVED: VLANs 1-6,10-11,14,30-37,39,85,87,93,95-97,136-137,399,528-534,560,592-597 on Interface port-channel4096 are removed from suspended state. 2015 Sep 6 06:07:57 VPC-Primary %ETHPORT-5-IF_SEQ_ERROR: Error ("IFTMC PD commit db search failed") communicating with MTS_SAP_ELTM for opcode MTS_OPC_ETHPM_PORT_LOGICAL_BRINGUP (RID_PORT: port-channel4096) 2015 Sep 6 06:07:57 VPC-Primary %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 1-6,10-11,14,30-37,39,85,87,93,95-97,136-137,399,528-534,560,592-597 on Interface port-channel4096 are being suspended. (Reason: IFTMC PD commit db search failed) 2015 Sep 6 06:07:57 VPC-Primary %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 2 on Interface port-channel48 are being suspended. (Reason: Vlan is not allowed on Peer-link) 2015 Sep 6 06:07:57 VPC-Primary %ETHPORT-5-IF_DOWN_INACTIVE: Interface port-channel48 is down (Inactive) 2015 Sep 6 06:08:49 VPC-Primary %ISIS_OTV-5-ADJCHANGE: isis_otv-default [8567] LAN adj L1 VPC-Secondary over site-vlan - DOWN (Hold timer expired) on MT--1 2015 Sep 6 06:09:15 VPC-Primary %AUTHPRIV-3-SYSTEM_MSG: pam_aaa:Authentication failed from console - login VPC-Secondary# show log last 30 2015 Sep 6 06:07:55 VPC-Secondary %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel4096,bandwidth changed to 2000000 Kbit 2015 Sep 6 06:07:55 VPC-Secondary %ETHPORT-5-IF_UP: Interface Ethernet4/6 is up in mode trunk 2015 Sep 6 06:07:57 VPC-Secondary %ETHPORT-3-IF_ERROR_VLANS_REMOVED: VLANs 1-6,10-11,14,30-37,39,85,87,93,95-97,136-137,399,528-534,560,592-597 on Interface port-channel4096 are removed from suspended state. 2015 Sep 6 06:07:57 VPC-Secondary %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel48 is down (No operational members) 2015 Sep 6 06:07:57 VPC-Secondary %ETHPORT-5-IF_SEQ_ERROR: Error ("IFTMC PD commit db search failed") communicating with MTS_SAP_ELTM for opcode MTS_OPC_ETHPM_PORT_LOGICAL_BRINGUP (RID_PORT: port-channel4096) 2015 Sep 6 06:07:57 VPC-Secondary %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 1-6,10-11,14,30-37,39,85,87,93,95-97,136-137,399,528-534,560,592-597 on Interface port-channel4096 are being suspended. (Reason: IFTMC PD commit db search failed) 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-SPEED: Interface Ethernet3/23, operational speed changed to 1 Gbps 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-IF_DUPLEX: Interface Ethernet3/23, operational duplex mode changed to Full 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet3/23, operational Receive Flow Control state changed to off 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet3/23, operational Transmit Flow Control state changed to off 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-SPEED: Interface port-channel48, operational speed changed to 1 Gbps 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-IF_DUPLEX: Interface port-channel48, operational duplex mode changed to Full 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel48, operational Receive Flow Control state changed to off 2015 Sep 6 06:08:00 VPC-Secondary %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel48, operational Transmit Flow Control state changed to off 2015 Sep 6 06:08:46 VPC-Secondary %ISIS_OTV-5-ADJCHANGE: isis_otv-default [9091] LAN adj L1 VPC-Primary over site-vlan - DOWN (Hold timer expired) on MT--1 2015 Sep 6 06:10:37 VPC-Secondary %ETHPORT-5-IF_DOWN_INITIALIZING: Interface port-channel48 is down (Initializing) 2015 Sep 6 06:10:37 VPC-Secondary %ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel48 is down (No operational members) 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-SPEED: Interface Ethernet3/23, operational speed changed to 1 Gbps 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-IF_DUPLEX: Interface Ethernet3/23, operational duplex mode changed to Full 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet3/23, operational Receive Flow Control state changed to off 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet3/23, operational Transmit Flow Control state changed to off 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-SPEED: Interface port-channel48, operational speed changed to 1 Gbps 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-IF_DUPLEX: Interface port-channel48, operational duplex mode changed to Full 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel48, operational Receive Flow Control state changed to off 2015 Sep 6 06:10:40 VPC-Secondary %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel48, operational Transmit Flow Control state changed to off 2015 Sep 6 06:10:45 VPC-Secondary %ETH_PORT_CHANNEL-5-PORT_UP: port-channel48: Ethernet3/23 is up 2015 Sep 6 06:10:45 VPC-Secondary %ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel48: first operational port changed from none to Ethernet3/23 2015 Sep 6 06:10:45 VPC-Secondary %ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel48,bandwidth changed to 1000000 Kbit 2015 Sep 6 06:10:45 VPC-Secondary %ETHPORT-5-IF_UP: Interface Ethernet3/23 is up in mode access 2015 Sep 6 06:10:45 VPC-Secondary %ETHPORT-3-IF_ERROR_VLANS_SUSPENDED: VLANs 2 on Interface port-channel48 are being suspended. (Reason: Vlan is not allowed on Peer-link)

Conditions

1. Otv edge in one otv site works as vpc peer. Peer-link allowed all extended vlans. 2. Peer-link allocated on N7K-F248XP-25E 3. when shut/no shut the vpc peer-link, all extended vlan will be suspended due due to "IFTMC PD commit db search failed" 4. shut/no shut vpc peer-link again can restore the service 5. test 6.2(10) and 6.2(12), problem can be reproduced 100%. 6. 6.2(14) and 7.2(0)D1(1) do not have this issue.

Workaround

shut/no shut vpc peer-link no matter on vpc-primary or vpc-secondary again

Further Problem Description