WJH Event Messages Reference

This reference lists all the NetQ-supported WJH metrics and provides a brief description of each. The full outputs vary slightly based on the type of drop and whether you are viewing the results in the NetQ UI or through one of the NetQ CLI commands.

For instructions on how to configure and monitor What Just Happened events, refer to Configure and Monitor What Just Happened.

ACL Drops

Displays the reason why an ACL has dropped packets.

ReasonDescription
Ingress port ACLACL action set to deny on the physical ingress port or bond
Ingress router ACLACL action set to deny on the ingress switch virtual interfaces (SVIs)
Egress port ACLACL action set to deny on the physical egress port or bond
Egress router ACLACL action set to deny on the egress SVIs

Buffer Drops

Displays the reason why the server buffer has dropped packets.

ReasonDescription
Tail dropTail drop is enabled, and buffer queue is filled to maximum capacity
WREDWeighted Random Early Detection is enabled, and buffer queue is filled to maximum capacity or the RED engine dropped the packet as of random congestion prevention
Port TC Congestion Threshold CrossedPercentage of the occupancy buffer exceeded or dropped below the specified high or low threshold
Packet Latency Threshold CrossedTime a packet spent within the switch exceeded or dropped below the specified high or low threshold

Layer 1 Drops

Displays the reason why a port is in the down state.

ReasonDescription
Port admin downPort has been purposely set down by user
Auto-negotiation failureNegotiation of port speed with peer has failed
Logical mismatch with peer linkLogical mismatch with peer link
Link training failureLink is not able to go operational up due to link training failure
Peer is sending remote faultsPeer node is not operating correctly
Bad signal integrityIntegrity of the signal on port is not sufficient for good communication
Cable/transceiver is not supportedThe attached cable or transceiver is not supported by this port
Cable/transceiver is unpluggedA cable or transceiver is missing or not fully inserted into the port
Calibration failureCalibration failure
Port state changes counterCumulative number of state changes
Symbol error counterCumulative number of symbol errors
CRC error counterCumulative number of CRC errors

In addition to the reason, the information provided for these drops includes:

ParameterDescription
Corrective ActionProvides recommend actions to take to resolve the port down state
First TimestampDate and time this port was marked as down for the first time
Ingress PortPort accepting incoming traffic
CRC Error CountNumber of CRC errors generated by this port
Symbol Error CountNumber of Symbol errors generated by this port
State Change CountNumber of state changes that have occurred on this port
OPIDOperation identifier; used for internal purposes
Is Port UpIndicates whether the port is in an Up (true) or Down (false) state

Layer 2 Drops

Displays the reason for a link to be down.

ReasonDescription
MLAG port isolationNot supported for port isolation implemented with system ACL
Destination MAC is reserved (DMAC=01-80-C2-00-00-0x)The address cannot be used by this link
VLAN tagging mismatchVLAN tags on the source and destination do not match
Ingress VLAN filteringFrames whose port is not a member of the VLAN are discarded
Ingress spanning tree filterPort is in Spanning Tree blocking state
Unicast MAC table action discardCurrently not supported
Multicast egress port list is emptyNo ports are defined for multicast egress
Port loopback filterPort is operating in loopback mode; packets are being sent to itself (source MAC address is the same as the destination MAC address
Source MAC is multicastPackets have multicast source MAC address
Source MAC equals destination MACSource MAC address is the same as the destination MAC address

In addition to the reason, the information provided for these drops includes:

ParameterDescription
Source PortPort ID where the link originates
Source IPPort IP address where the link originates
Source MACPort MAC address where the link originates
Destination PortPort ID where the link terminates
Destination IPPort IP address where the link terminates
Destination MACPort MAC address where the link terminates
First TimestampDate and time this link was marked as down for the first time
Aggregate CountTotal number of dropped packets
ProtocolID of the communication protocol running on this link
Ingress PortPort accepting incoming traffic
OPIDOperation identifier; used for internal purposes

Router Drops

Displays the reason why the server is unable to route a packet.

ReasonDescription
Non-routable packetPacket has no route in routing table
Blackhole routePacket received with action equal to discard
Unresolved next hopThe next hop in the route is unknown
Blackhole ARP/neighborPacket received with blackhole adjacency
IPv6 destination in multicast scope FFx0:/16Packet received with multicast destination address in FFx0:/16 address range
IPv6 destination in multicast scope FFx1:/16Packet received with multicast destination address in FFx1:/16 address range
Non-IP packetCannot read packet header because it is not an IP packet
Unicast destination IP but non-unicast destination MACCannot read packet with IP unicast address when destination MAC address is not unicast (FF:FF:FF:FF:FF:FF)
Destination IP is loopback addressCannot read packet as destination IP address is a loopback address (dip=>127.0.0.0/8)
Source IP is multicastCannot read packet as source IP address is a multicast address (ipv4 SIP => 224.0.0.0/4)
Source IP is in class ECannot read packet as source IP address is a Class E address
Source IP is loopback addressCannot read packet as source IP address is a loopback address ( ipv4 => 127.0.0.0/8 for ipv6 => ::1/128)
Source IP is unspecifiedCannot read packet as source IP address is unspecified (ipv4 = 0.0.0.0/32; for ipv6 = ::0)
Checksum or IP ver or IPv4 IHL too shortCannot read packet due to header checksum error, IP version mismatch, or IPv4 header length is too short
Multicast MAC mismatchFor IPv4, destination MAC address is not equal to {0x01-00-5E-0 (25 bits), DIP[22:0]} and DIP is multicast. For IPv6, destination MAC address is not equal to {0x3333, DIP[31:0]} and DIP is multicast
Source IP equals destination IPPacket has a source IP address equal to the destination IP address
IPv4 source IP is limited broadcastPacket has broadcast source IP address
IPv4 destination IP is local network (destination = 0.0.0.0/8)Packet has IPv4 destination address that is a local network (destination=0.0.0.0/8)
IPv4 destination IP is link-localPacket has IPv4 destination address that is a local link
Ingress router interface is disabledPacket destined to a different subnet cannot be routed because ingress router interface is disabled
Egress router interface is disabledPacket destined to a different subnet cannot be routed because egress router interface is disabled
IPv4 routing table (LPM) unicast missNo route available in routing table for packet
IPv6 routing table (LPM) unicast missNo route available in routing table for packet
Router interface loopbackPacket has destination IP address that is local. For example, SIP = 1.1.1.1, DIP = 1.1.1.128.
Packet size is larger than MTUPacket has larger MTU configured than the VLAN
TTL value is too smallPacket has TTL value of 1

Tunnel Drops

Displays the reason for a tunnel to be down.

ReasonDescription
Overlay switch - source MAC is multicastOverlay packet’s source MAC address is multicast
Overlay switch - source MAC equals destination MACOverlay packet’s source MAC address is the same as the destination MAC address
Decapsulation errorDe-capsulation produced incorrect format of packet. For example, encapsulation of packet with many VLANs or IP options on the underlay can cause de-capsulation to result in a short packet.