NE20E因链路质量导致BFD振荡解决方案

小乔 · 发表于 2016-6-23 10:33:49

版本：NE20E-S8 V800R007C10SPC100

此NE20E设备通过mstp的组网方式连接到了各个地市的分支机构，并与分支之间运行bgp，通过bgp邻居动态的建立了bfd会话，bfd会话的参数min-tx和min-rx的时间均为50毫秒。之前版本为V800R005，前天晚上对设备进行升级操作到V800R007C10SPC100，补丁为V800R007SPH017，升级完毕后进行业务测试，设备状态、业务均正常。第二天早晨，接到客户的通知，说设备上频繁的弹出日志，提示BFD会话在up/down之间频繁切换.

告警信息
Jun  2 2016 09:12:39+08:00 ZZDC20WA02-A2 %%01BFD/4/hwBfdSessUp(t):VS=Admin-VS-CID=0x8074041c-OID=1.3.6.1.4.1.2011.5.25.38.3.2;Session changes to UP. (Index=16412, ConfigurationName=-, PeerIp=20.19.254.78, BindIfIndex=59, BindIfName=GigabitEthernet0/1/0.103, Diagnosis=0, BindVrfIndex=0, BindVpnName=_public_, SessionType=2, DefaultIp=1, BindType=4, StaticLspName=-, PwSecondary=3, NextHop=0.0.0.0, VcId=0, VsiName=-, VsiPeerAddress=0.0.0.0, DiscrAuto=2, PeerIpv6=::, Ipv6NextHop=::)
Jun  2 2016 09:14:10+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.2;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.98, BgpPeerLastError=69, BgpPeerState=1)
Jun  2 2016 09:14:10+08:00 ZZDC20WA02-A2 %%01BGP/6/PEER_STATE_CHG(l):VS=Admin-VS-CID=0x8013044b;The state of the peer changed after receiving an event. (PrevState=ESTABLISHED, CurrState=IDLE, InputEvent=AUTO_STOP, Peer=20.19.254.98, VpnInstance=_public_)
Jun  2 2016 09:14:10+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_SEND(l):VS=Admin-VS-CID=0x8013044b;Sent a NOTIFICATION to the peer. (Peer=20.19.254.98, ErrorCode=6, SubErrorCode=9, NotifyInfo=CEASE/BFD Session Down,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:14:10+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TODWN(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Down. (SlotNumber=9, Discriminator=16386, Diagnostic=NeighborDown, Applications=BGP, ProcessPST=False, BindInterfaceName=GigabitEthernet0/2/0.108, InterfacePhysicalState=Up, InterfaceProtocolState=Up, TunnelName=-)
Jun  2 2016 09:14:10+08:00 ZZDC20WA02-A2 %%01BFD/5/DELSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session was deleted. (Discriminator=16386, Result=successfully, Applications=BGP, BindIFName=GigabitEthernet0/2/0.108, SourceIp=20.19.254.97, PeerIp=20.19.254.98)
Jun  2 2016 09:14:10+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_active(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.98, BgpPeerLastError=69, BgpPeerState=1, LocalIfName=-, Reason=BGP remote peer not reachable)
Jun  2 2016 09:14:31+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.2;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.106, BgpPeerLastError=69, BgpPeerState=1)
Jun  2 2016 09:14:31+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_SEND(l):VS=Admin-VS-CID=0x8013044b;Sent a NOTIFICATION to the peer. (Peer=20.19.254.106, ErrorCode=6, SubErrorCode=9, NotifyInfo=CEASE/BFD Session Down,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:14:32+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TODWN(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Down. (SlotNumber=9, Discriminator=16407, Diagnostic=NeighborDown, Applications=BGP, ProcessPST=False, BindInterfaceName=GigabitEthernet0/2/0.110, InterfacePhysicalState=Up, InterfaceProtocolState=Up, TunnelName=-)
Jun  2 2016 09:14:32+08:00 ZZDC20WA02-A2 %%01BFD/5/DELSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session was deleted. (Discriminator=16407, Result=successfully, Applications=BGP, BindIFName=GigabitEthernet0/2/0.110, SourceIp=20.19.254.105, PeerIp=20.19.254.106)
Jun  2 2016 09:14:31+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_active(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.106, BgpPeerLastError=69, BgpPeerState=1, LocalIfName=-, Reason=BGP remote peer not reachable)
Jun  2 2016 09:14:42+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpEstablishedNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.1;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.98, BgpPeerLastError=69, BgpPeerState=6)
Jun  2 2016 09:14:42+08:00 ZZDC20WA02-A2 %%01BFD/6/CRTSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session has been created successfully. (Discriminator=16413, ConfigurationName=-, Applications=BGP, PeerIp=20.19.254.98, SessionType=D_IP_IF, BindIFName=GigabitEthernet0/2/0.108, BindVpnName=_public_, SourceIp=20.19.254.97)
Jun  2 2016 09:14:42+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_clear(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f-clearType=service_resume;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.98, BgpPeerLastError=69, BgpPeerState=6, LocalIfName=-, Reason=Alarm clear)
Jun  2 2016 09:14:50+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TOUP(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Up. (SlotNumber=9, Discriminator=16413, FormerStatus=Down, Applications=BGP, BindInterfaceName=GigabitEthernet0/2/0.108, ProcessPST=False, TunnelName=-)
Jun  2 2016 09:15:03+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpEstablishedNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.1;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.106, BgpPeerLastError=69, BgpPeerState=6)
Jun  2 2016 09:15:04+08:00 ZZDC20WA02-A2 %%01BFD/6/CRTSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session has been created successfully. (Discriminator=16414, ConfigurationName=-, Applications=BGP, PeerIp=20.19.254.106, SessionType=D_IP_IF, BindIFName=GigabitEthernet0/2/0.110, BindVpnName=_public_, SourceIp=20.19.254.105)
Jun  2 2016 09:15:03+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_clear(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f-clearType=service_resume;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.106, BgpPeerLastError=69, BgpPeerState=6, LocalIfName=-, Reason=Alarm clear)
Jun  2 2016 09:15:20+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TOUP(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Up. (SlotNumber=9, Discriminator=16414, FormerStatus=Down, Applications=BGP, BindInterfaceName=GigabitEthernet0/2/0.110, ProcessPST=False, TunnelName=-)
Jun  2 2016 09:16:39+08:00 ZZDC20WA02-A2 %%01BFD/4/hwBfdSessUp(t):VS=Admin-VS-CID=0x8074041c-OID=1.3.6.1.4.1.2011.5.25.38.3.2;Session changes to UP. (Index=16413, ConfigurationName=-, PeerIp=20.19.254.98, BindIfIndex=70, BindIfName=GigabitEthernet0/2/0.108, Diagnosis=0, BindVrfIndex=0, BindVpnName=_public_, SessionType=2, DefaultIp=1, BindType=4, StaticLspName=-, PwSecondary=3, NextHop=0.0.0.0, VcId=0, VsiName=-, VsiPeerAddress=0.0.0.0, DiscrAuto=2, PeerIpv6=::, Ipv6NextHop=::)
Jun  2 2016 09:16:39+08:00 ZZDC20WA02-A2 %%01BFD/4/hwBfdSessUp(t):VS=Admin-VS-CID=0x8074041c-OID=1.3.6.1.4.1.2011.5.25.38.3.2;Session changes to UP. (Index=16414, ConfigurationName=-, PeerIp=20.19.254.106, BindIfIndex=72, BindIfName=GigabitEthernet0/2/0.110, Diagnosis=0, BindVrfIndex=0, BindVpnName=_public_, SessionType=2, DefaultIp=1, BindType=4, StaticLspName=-, PwSecondary=3, NextHop=0.0.0.0, VcId=0, VsiName=-, VsiPeerAddress=0.0.0.0, DiscrAuto=2, PeerIpv6=::, Ipv6NextHop=::)
Jun  2 2016 09:20:36+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_RECV(l):VS=Admin-VS-CID=0x8013048f-Slot=12;The router received a NOTIFICATION from the peer. (Peer=20.19.254.134, ErrorCode=6, SubErrorCode=0, NotifyInfo=Unknown ErrCode and ErrSubcode,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:20:36+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.2;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=1)
Jun  2 2016 09:20:36+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_RECV(l):VS=Admin-VS-CID=0x8013044b;The router received a NOTIFICATION from the peer. (Peer=20.19.254.134, ErrorCode=6, SubErrorCode=0, NotifyInfo=Unknown ErrCode and ErrSubcode,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:20:37+08:00 ZZDC20WA02-A2 %%01BFD/5/DELSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session was deleted. (Discriminator=16400, Result=successfully, Applications=BGP, BindIFName=GigabitEthernet0/1/0.120, SourceIp=20.19.254.133, PeerIp=20.19.254.134)
Jun  2 2016 09:20:36+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_active(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=1, LocalIfName=-, Reason=BGP receive notification)
Jun  2 2016 09:20:45+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpEstablishedNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.1;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=6)
Jun  2 2016 09:20:45+08:00 ZZDC20WA02-A2 %%01BFD/6/CRTSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session has been created successfully. (Discriminator=16415, ConfigurationName=-, Applications=BGP, PeerIp=20.19.254.134, SessionType=D_IP_IF, BindIFName=GigabitEthernet0/1/0.120, BindVpnName=_public_, SourceIp=20.19.254.133)
Jun  2 2016 09:20:45+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_clear(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f-clearType=service_resume;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=6, LocalIfName=-, Reason=Alarm clear)
Jun  2 2016 09:21:06+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TOUP(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Up. (SlotNumber=9, Discriminator=16415, FormerStatus=Down, Applications=BGP, BindInterfaceName=GigabitEthernet0/1/0.120, ProcessPST=False, TunnelName=-)
Jun  2 2016 09:22:19+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_RECV(l):VS=Admin-VS-CID=0x8013048f-Slot=12;The router received a NOTIFICATION from the peer. (Peer=20.19.254.90, ErrorCode=6, SubErrorCode=9, NotifyInfo=CEASE/BFD Session Down,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:22:19+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.2;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.90, BgpPeerLastError=69, BgpPeerState=1)
Jun  2 2016 09:22:19+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_SEND(l):VS=Admin-VS-CID=0x8013044b;Sent a NOTIFICATION to the peer. (Peer=20.19.254.90, ErrorCode=6, SubErrorCode=9, NotifyInfo=CEASE/BFD Session Down,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:22:20+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TODWN(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Down. (SlotNumber=9, Discriminator=16411, Diagnostic=NeighborDown, Applications=BGP, ProcessPST=False, BindInterfaceName=GigabitEthernet0/1/0.106, InterfacePhysicalState=Up, InterfaceProtocolState=Up, TunnelName=-)
Jun  2 2016 09:22:20+08:00 ZZDC20WA02-A2 %%01BFD/5/DELSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session was deleted. (Discriminator=16411, Result=successfully, Applications=BGP, BindIFName=GigabitEthernet0/1/0.106, SourceIp=20.19.254.89, PeerIp=20.19.254.90)
Jun  2 2016 09:22:19+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_active(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.90, BgpPeerLastError=69, BgpPeerState=1, LocalIfName=-, Reason=BGP remote peer not reachable)
Jun  2 2016 09:22:39+08:00 ZZDC20WA02-A2 %%01BFD/4/hwBfdSessUp(t):VS=Admin-VS-CID=0x8074041c-OID=1.3.6.1.4.1.2011.5.25.38.3.2;Session changes to UP. (Index=16415, ConfigurationName=-, PeerIp=20.19.254.134, BindIfIndex=109, BindIfName=GigabitEthernet0/1/0.120, Diagnosis=0, BindVrfIndex=0, BindVpnName=_public_, SessionType=2, DefaultIp=1, BindType=4, StaticLspName=-, PwSecondary=3, NextHop=0.0.0.0, VcId=0, VsiName=-, VsiPeerAddress=0.0.0.0, DiscrAuto=2, PeerIpv6=::, Ipv6NextHop=::)
Jun  2 2016 09:22:51+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpEstablishedNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.1;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.90, BgpPeerLastError=69, BgpPeerState=6)
Jun  2 2016 09:22:51+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_RECV(l):VS=Admin-VS-CID=0x8013048f-Slot=12;The router received a NOTIFICATION from the peer. (Peer=20.19.254.134, ErrorCode=6, SubErrorCode=0, NotifyInfo=Unknown ErrCode and ErrSubcode,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:22:51+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.2;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=1)
Jun  2 2016 09:22:51+08:00 ZZDC20WA02-A2 %%01BGP/6/NOTIFY_RECV(l):VS=Admin-VS-CID=0x8013044b;The router received a NOTIFICATION from the peer. (Peer=20.19.254.134, ErrorCode=6, SubErrorCode=0, NotifyInfo=Unknown ErrCode and ErrSubcode,VpnInstance=_public_, ErrorData=NULL)
Jun  2 2016 09:22:52+08:00 ZZDC20WA02-A2 %%01BFD/6/CRTSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session has been created successfully. (Discriminator=16416, ConfigurationName=-, Applications=BGP, PeerIp=20.19.254.90, SessionType=D_IP_IF, BindIFName=GigabitEthernet0/1/0.106, BindVpnName=_public_, SourceIp=20.19.254.89)
Jun  2 2016 09:22:52+08:00 ZZDC20WA02-A2 %%01BFD/5/DELSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session was deleted. (Discriminator=16415, Result=successfully, Applications=BGP, BindIFName=GigabitEthernet0/1/0.120, SourceIp=20.19.254.133, PeerIp=20.19.254.134)
Jun  2 2016 09:22:51+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_active(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f;The BGP FSM moves from a higher numbered state to a lower numbered state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=1, LocalIfName=-, Reason=BGP receive notification)
Jun  2 2016 09:22:51+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_clear(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f-clearType=service_resume;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.90, BgpPeerLastError=69, BgpPeerState=6, LocalIfName=-, Reason=Alarm clear)
Jun  2 2016 09:22:58+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TOUP(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Up. (SlotNumber=9, Discriminator=16416, FormerStatus=Down, Applications=BGP, BindInterfaceName=GigabitEthernet0/1/0.106, ProcessPST=False, TunnelName=-)
Jun  2 2016 09:23:02+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpEstablishedNotification(t):VS=Admin-VS-CID=0x8013044b-OID=1.3.6.1.2.1.15.0.1;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=6)
Jun  2 2016 09:23:02+08:00 ZZDC20WA02-A2 %%01BFD/6/CRTSESS(l):VS=Admin-VS-CID=0x8074041c;The BFD session has been created successfully. (Discriminator=16417, ConfigurationName=-, Applications=BGP, PeerIp=20.19.254.134, SessionType=D_IP_IF, BindIFName=GigabitEthernet0/1/0.120, BindVpnName=_public_, SourceIp=20.19.254.133)
Jun  2 2016 09:23:02+08:00 ZZDC20WA02-A2 %%01BGP/2/bgpBackwardTransition_clear(l):VS=Admin-VS-CID=0x8013044b-alarmID=0x0879000f-clearType=service_resume;The BGP FSM enters the Established state. (BgpPeerRemoteAddr=20.19.254.134, BgpPeerLastError=60, BgpPeerState=6, LocalIfName=-, Reason=Alarm clear)
Jun  2 2016 09:23:16+08:00 ZZDC20WA02-A2 %%01BFD/4/STACHG_TOUP(l):VS=Admin-VS-CID=0x8074041c;BFD session changed to Up. (SlotNumber=9, Discriminator=16417, FormerStatus=Down, Applications=BGP, BindInterfaceName=GigabitEthernet0/1/0.120, ProcessPST=False, TunnelName=-)
Jun  2 2016 09:24:39+08:00 ZZDC20WA02-A2 %%01BFD/4/hwBfdSessUp(t):VS=Admin-VS-CID=0x8074041c-OID=1.3.6.1.4.1.2011.5.25.38.3.2;Session changes to UP. (Index=16416, ConfigurationName=-, PeerIp=20.19.254.90, BindIfIndex=62, BindIfName=GigabitEthernet0/1/0.106, Diagnosis=0, BindVrfIndex=0, BindVpnName=_public_, SessionType=2, DefaultIp=1, BindType=4, StaticLspName=-, PwSecondary=3, NextHop=0.0.0.0, VcId=0, VsiName=-, VsiPeerAddress=0.0.0.0, DiscrAuto=2, PeerIpv6=::, Ipv6NextHop=::)
Jun  2 2016 09:24:39+08:00 ZZDC20WA02-A2 %%01BFD/4/hwBfdSessUp(t):VS=Admin-VS-CID=0x8074041c-OID=1.3.6.1.4.1.2011.5.25.38.3.2;Session changes to UP. (Index=16417, ConfigurationName=-, PeerIp=20.19.254.134, BindIfIndex=109, BindIfName=GigabitEthernet0/1/0.120, Diagnosis=0, BindVrfIndex=0, BindVpnName=_public_, SessionType=2, DefaultIp=1, BindType=4, StaticLspName=-, PwSecondary=3, NextHop=0.0.0.0, VcId=0, VsiName=-, VsiPeerAddress=0.0.0.0, DiscrAuto=2, PeerIpv6=::, Ipv6NextHop=::)
Jun  2 2016 09:26:42+08:00 ZZDC20WA02-A2 %%01HAF/6/DBG_HEALTH(l):VS=Admin-VS-CID=0x80cc001c;Automatic record:

处理过程

客户反馈说升级前的确每天也会有几个bfd会话up/down的日志，故判断是由于运营商链路质量问题导致BFD会话频繁振荡

在设备上长ping如下地址，看看ping测是否有丢包

Ping –a 20.19.254.85 –si GigabitEthernet0/1/0.105 –c 1000000  -m  200 20.19.254.86

Ping –a 20.19.254.81 –si GigabitEthernet0/1/0.104  –c 1000000  -m  200  20.19.254.82

如果ping测试有丢包可以配置流统查看一下报文收发情况：

Acl  3987
Rule 5 permit icmp source 20.19.254.86  0  destination 20.19.254.85 0
Rule 10 perm icmp source 20.19.254.85  0  destination 20.19.254.86 0
Rule 15 permit icmp source 20.19.254.81  0  destination 20.19.254.82 0
Rule 20 perm icmp source 20.19.254.82  0  destination 20.19.254.81 0

#
traffic classifier 3987 operator or
if-match acl 3987
#
traffic behavior 3987
#
traffic policy 3987
undo share-mode
statistics enable
classifier 3987 behavior 3987

interface GigabitEthernet0/1/0.104
traffic-policy 3987 inbound
traffic-policy 3987 outbound

interface GigabitEthernet0/1/0.105
traffic-policy 3987 inbound
traffic-policy 3987 outbound

ping包后使用如下命令查看流统结果：

display  traffic  policy statistics interface GigabitEthernet 0/1/0.104  inbound verbose  rule-based
display  traffic  policy statistics interface GigabitEthernet  0/1/0.104  outbound verbose  rule-based
display  traffic  policy statistics interface GigabitEthernet 0/1/0.105  inbound verbose  rule-based
display  traffic  policy statistics interface GigabitEthernet  0/1/0.105  outbound verbose  rule-based

查看bgp邻居状态发现，有的分支邻居状态一直处于建立状态，只是个别由于bfd的频繁切换，导致bgp邻居也不断的重新建立：
  Peer          V AS    MsgRcvd  MsgSent  OutQ  Up/Down State PrefRcv
  10.19.252.9    4  65000 228155 228186    0 1794h45m Established    83
  20.19.254.66 4  65200 194403 227757    0 0354h53m Established    4
  20.19.254.70 4  65201 194383 227665    0 1676h31m Established    2
  20.19.254.74 4  65202 193953 227217    0 0267h52m Established    2
  20.19.254.78 4  65203 194371 227641    0 1676h31m Established    2
  20.19.254.82 4  65204 195743 229403    0 00:33:00 Established    2
  20.19.254.86 4  65205 194426 227695    0 00:23:21 Established    2
  20.19.254.90 4  65206 194432 227806    0 00:20:21 Established    2
  20.19.254.94 4  65207 193977 227150    0 0171h57m Established    4
  20.19.254.98 4  65208 194456 227821    0 0144h06m Established    2
  20.19.254.102 4  65209 194414 227719    0 1630h17m Established    2
  20.19.254.106 4  65210 194456 227772    0 1676h31m Established    2
  20.19.254.110 4  65211 194456 227810    0 00:33:21 Established    2
  20.19.254.114 4  65212 194488 227857    0 00:18:21 Established    2
  20.19.254.118 4  65100 194972 227811    0 1222h37m Established    19
  20.19.254.122 4  65101 194457 227650    0 1676h31m Established    6
  20.19.254.126 4  65214 194296 227608    0 1676h34m Established    2
  20.19.254.130 4  65213 213797 227654    0 1676h30m Established    2
  20.19.254.134 4  65102 217876 220502    0 0742h19m Established    2

根因

ping包的时候在设备上做的流统结果：

在G0/1/0.104下发送出去641个icmp报文，但是收到的应答报文只有637个。
在G0/1/0.105下发送出去2035个icmp报文，但是收到的应答报文只有2034个
这说明客户网络链路中存在丢包问题。

解决方案
游客，如果您要查看本帖隐藏内容请回复

viyin · 发表于 2016-6-23 10:44:58

fsad413243214

itc321 · 发表于 2016-6-23 10:59:11

whale- · 发表于 2016-6-23 12:47:26

sy7527951 · 发表于 2016-6-23 18:32:17

支持一下啊~~~

mohuaguo · 发表于 2016-6-26 02:50:35

谢谢啊

xsfxsf · 发表于 2016-7-5 08:52:50

高深啊，链路测试，我是直接中断电路PING

huwei263 · 发表于 2016-7-27 15:01:38

谢谢楼主分享了。

孤独的埋葬 · 发表于 2016-7-28 10:20:23

Beloved小子 · 发表于 2016-9-26 15:26:43

好东西，谢谢

zhenxl@nmsjtc · 发表于 2019-5-23 21:31:40

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