Hi ,Thanks for input
My Core Switch(two links are connected to ASR Router ) they asking why it is went down...what are the possible reasons to link down.please help on this
2023 Feb 25 16:18:53 QROMSPCNXL3B201 %ETHPORT-5-IF_DOWN_LINK_FAILURE: Interface Ethernet1/51 is down (Link failure)
2023 Feb 25 16:18:53 QROMSPCNXL3B201 %BGP-5-ADJCHANGE: bgp- [594] (PSTN) neighbor 10.27.4.33 Down - sent: bfd session down
2023 Feb 25 16:18:53 QROMSPCNXL3B201 %BFD-5-SESSION_STATE_DOWN: BFD session 1090519042 to neighbor 10.27.4.33 on interface Eth1/51 has gone down. Reason: Path Down.
2023 Feb 25 16:18:53 QROMSPCNXL3B201 %ETHPORT-5-IF_DOWN_LINK_FAILURE: Interface Ethernet1/49 is down (Link failure)
2023 Feb 25 16:18:53 QROMSPCNXL3B201 %BGP-5-ADJCHANGE: bgp- [594] (TELCEL) neighbor 10.27.4.1 Down - sent: bfd session down
2023 Feb 25 16:18:53 QROMSPCNXL3B201 %BFD-5-SESSION_STATE_DOWN: BFD session 1090519057 to neighbor 10.27.4.1 on interface Eth1/49 has gone down. Reason: Path Down.
2023 Feb 25 16:18:54 QROMSPCNXL3B201 %BFD-5-SESSION_REMOVED: BFD session to neighbor 10.27.4.33 on interface Eth1/51 has been removed
2023 Feb 25 16:18:54 QROMSPCNXL3B201 %BFD-5-SESSION_REMOVED: BFD session to neighbor 10.27.4.1 on interface Eth1/49 has been removed
2023 Feb 25 16:18:55 QROMSPCNXL3B201 %ARP-3-DUP_VADDR_SRC_IP: arp [30337] Source address of packet received from 0000.0c9f.f15f on Vlan153(port-channel30) is duplicate of local virtual ip, 10.27.1.81
2023 Feb 25 16:19:29 QROMSPCNXL3B201 last message repeated 3 times
2023 Feb 25 16:20:36 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:21:44 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:22:52 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:24:00 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:25:07 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:26:15 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:27:22 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:28:31 QROMSPCNXL3B201 last message repeated 6 times
2023 Feb 25 16:29:34 QROMSPCNXL3B201 last message repeated 5 times
2023 Feb 25 16:29:34 QROMSPCNXL3B201 %ETHPORT-5-SPEED: Interface Ethernet1/51, operational speed changed to 10 Gbps
2023 Feb 25 16:29:34 QROMSPCNXL3B201 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/51, operational duplex mode changed to Full
2023 Feb 25 16:29:34 QROMSPCNXL3B201 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/51, operational Receive Flow Control state changed to off
2023 Feb 25 16:29:34 QROMSPCNXL3B201 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/51, operational Transmit Flow Control state changed to off
2023 Feb 25 16:29:34 QROMSPCNXL3B201 %ETHPORT-5-IF_UP: Interface Ethernet1/51 is up in Layer3
2023 Feb 25 16:29:39 QROMSPCNXL3B201 %ARP-3-DUP_VADDR_SRC_IP: arp [30337] Source address of packet received from 0000.0c9f.f15f on Vlan153(port-channel30) is duplicate of local virtual ip, 10.27.1.81
2023 Feb 25 16:29:52 QROMSPCNXL3B201 last message repeated 1 time
2023 Feb 25 16:29:52 QROMSPCNXL3B201 %ETHPORT-5-SPEED: Interface Ethernet1/49, operational speed changed to 10 Gbps
2023 Feb 25 16:29:52 QROMSPCNXL3B201 %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/49, operational duplex mode changed to Full
2023 Feb 25 16:29:52 QROMSPCNXL3B201 %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/49, operational Receive Flow Control state changed to off
2023 Feb 25 16:29:52 QROMSPCNXL3B201 %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/49, operational Transmit Flow Control state changed to off
2023 Feb 25 16:29:52 QROMSPCNXL3B201 %ETHPORT-5-IF_UP: Interface Ethernet1/49 is up in Layer3
2023 Feb 25 16:29:52 QROMSPCNXL3B201 %BGP-5-ADJCHANGE: bgp- [594] (PSTN) neighbor 10.27.4.33 Up
2023 Feb 25 16:29:53 QROMSPCNXL3B201 %BFD-5-SESSION_MOVED: BFD session 0x41000016: Installed on LC 1
2023 Feb 25 16:29:53 QROMSPCNXL3B201 %BFD-5-SESSION_CREATED: BFD session to neighbor 10.27.4.33 on interface Eth1/51 has been created
2023 Feb 25 16:29:57 QROMSPCNXL3B201 %BGP-5-ADJCHANGE: bgp- [594] (TELCEL) neighbor 10.27.4.1 Up
2023 Feb 25 16:29:58 QROMSPCNXL3B201 %BFD-5-SESSION_MOVED: BFD session 0x41000017: Installed on LC 1
2023 Feb 25 16:29:58 QROMSPCNXL3B201 %BFD-5-SESSION_CREATED: BFD session to neighbor 10.27.4.1 on interface Eth1/49 has been created
2023 Feb 25 16:30:00 QROMSPCNXL3B201 %BFD-5-SESSION_STATE_UP: BFD session 1090519062 to neighbor 10.27.4.33 on interface Eth1/51 is up.
2023 Feb 25 16:30:02 QROMSPCNXL3B201 %ARP-3-DUP_VADDR_SRC_IP: arp [30337] Source address of packet received from 0000.0c9f.f15f on Vlan153(port-channel30) is duplicate of local virtual ip, 10.27.1.81
2023 Feb 25 16:30:04 QROMSPCNXL3B201 %BFD-5-SESSION_STATE_UP: BFD session 1090519063 to neighbor 10.27.4.1 on interface Eth1/49 is up.
2023 Feb 25 16:30:13 QROMSPCNXL3B201 %ARP-3-DUP_VADDR_SRC_IP: arp [30337] Source address of packet received from 0000.0c9f.f15f on Vlan153(port-channel30) is duplicate of local
Thanks
Rakesh
