Viewing IPv6 Statistics for an Interface

View IPv6 statistics to view information about the IPv6 datagrams on an interface.

Procedure

In the navigation pane, expand the Configuration > IPv6 folders.
Click IPv6.
Click the Interfaces tab.
Select an interface.
Click IfStats.
Optional: Select one or more values, and then click on the type of graph to graph the data.

Statistics Field Descriptions

Use the data in the following table to use the Statistics tab.


Name	Description
InReceives	Shows the total number of input datagrams received by the interface, including those received in error.
InHdrErrors	Shows the number of input datagrams discarded due to errors in their IPv6 headers, including version number mismatch, other format errors, hop count exceeded, and errors discovered in processing the IPv6 options.
InTooBigErrors	Shows the number of input datagrams that could not be forwarded because their size exceeded the link MTU of the outgoing interface.
InNoRoutes	Shows the number of input datagrams discarded because no route could be found to transmit them to their destination.
InAddrErrors	Shows the number of input datagrams discarded because the IPv6 address in the IPv6 header destination field was not a valid address to be received at this entity. This count includes invalid addresses, for example, ::0, and unsupported addresses, for example, addresses with unallocated prefixes. For entities which are not IPv6 routers and do not forward datagrams, this counter includes datagrams discarded because the destination address was not a local address.
InUnknownProtos	Shows the number of locally-addressed datagrams received successfully but discarded because of an unknown or unsupported protocol. This counter is incremented at the interface to which these datagrams were addressed, which is not always the input interface for some of the datagrams.
InTruncatedPkts	Shows the number of input datagrams discarded because the datagram frame did not carry enough data.
InDiscards	Shows the number of input IPv6 datagrams for which no problems were encountered to prevent their continued processing, but which were discarded, for example, for lack of buffer space. This counter does not include datagrams discarded while awaiting re-assembly.
InDelivers	Shows the total number of datagrams successfully delivered to IPv6 user-protocols (including ICMP). This counter is incremented at the interface to which these datagrams were addressed which is not always the input interface for some of the datagrams.
OutForwDatagrams	Shows the number of output datagrams which this entity received and forwarded to their final destinations. In entities which do not act as IPv6 routers, this counter includes only those packets which were Source-Routed using this entity, and the Source-Route processing was successful. For a successfully forwarded datagram the counter of the outgoing interface is incremented.
OutRequests	Shows the total number of IPv6 datagrams which local IPv6 user-protocols (including ICMP) supplied to IPv6 in requests for transmission. This counter does not include datagrams counted in OutForwDatagrams.
OutDiscards	Shows the number of output IPv6 datagrams for which no problem was encountered to prevent their transmission to their destination, but which were discarded, for example , for lack of buffer space. This counter includes datagrams counted in OutForwDatagrams if such packets met this (discretionary) discard criterion.
OutFragOKs	Shows the number of IPv6 datagrams that have been successfully fragmented at this output interface.
OutFragFails	Shows the number of IPv6 datagrams that have been discarded because they needed to be fragmented at this output interface but could not be.
OutFragCreates	Shows the number of output datagram fragments that have been generated as a result of fragmentation at this output interface.
ReasmReqds	Shows the number of IPv6 fragments received which needed to be reassembled at this interface. This counter is incremented at the interface to which these fragments were addressed, which is not always the input interface for some of the fragments.
ReasmOKs	Shows the number of IPv6 datagrams successfully reassembled. This counter is incremented at the interface to which these datagrams were addressed, which is not always the input interface for some of the fragments.
ReasmFails	Shows the number of failures detected by the IPv6 re- assembly algorithm). This value is not necessarily a count of discarded IPv6 fragments because some algorithms can lose track of the number of fragments by combining them as they are received. This counter is incremented at the interface to which these fragments were addressed, which is not always the input interface for some of the fragments.
InMcastPkts	Shows the number of multicast packets received by the interface.
OutMcastPkts	Shows the number of multicast packets transmitted by the interface.