display ipv6 statistics

Function

The display ipv6 statistics command displays the IPv6 traffic statistics.

Format

display ipv6 statistics [ interface interface-type interface-number ]

Parameters

Parameter	Description	Value
interface interface-type interface-number	Indicates the IPv6 traffic statistics on the specified interface.	-

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

Usage Scenario

The display ipv6 statistics command can be used to display the statistics on sent and received IPv6 packets.

If the source device has fragmented packets during packet transmission, you can run the display ipv6 statistics command to view the total number of IPv6 packets that are successfully fragmented and the total number of sent fragments. Then, check whether the number of the fragments received by the destination device is correct.

Precautions

The total number of packets received by a routing device includes the number of packets forwarded by the device, the number of packets sent to the CPU of the device, and the number of packets discarded by the device.

Example

# Display the statistics of the IPv6 packet processed by the device.

<sysname> display ipv6 statistics

IPv6 Protocol:                                                                  

  Sent packets:                                                                 
    Total              : 3630                                                   
    Local sent out     : 3630       Forwarded          : 0                      
    Raw packets        : 0          Discarded          : 0                      
    Fragmented         : 0          Fragments          : 0                      
    Fragments failed   : 0          Multicast          : 0                      
                                                                                
  Received packets:                                                             
    Total              : 3630       Local host         : 3630                   
    Hop count exceeded : 0          Header error       : 0                      
    Too big            : 0          Routing failed     : 0                      
    Address error      : 0          Protocol error     : 0                      
    Truncated          : 0          Option error       : 0                      
    Fragments          : 0          Reassembled        : 0                      
    Reassembly timeout : 0          Multicast          : 0                      
    Fragments overlap  : 0                                                   
    Extension Header:         
     Hop-by-Hop Options   : 0        Mobility Header       : 0
     Destination Options  : 0        Routing Header        : 0
     Fragment Header      : 0        Authentication Header : 0
     Encapsulation Header : 0        No header             : 0
     TLV Length error     : 0        Header Length error   : 0
     Unknown header type  : 0        Unknown TLV type      : 0

**Table 1** Description of the **display ipv6 statistics** command output
Item	Description
Sent packets	Statistics on the sent packets
Total	Total count of the sent packets
Local sent out	Total count of the packets sent by local hosts
Multicast	multicast
Forwarded	Count of the forwarded packets
Raw packets	Total count of the packets sent through the raw socket, such as Ping or Tracert packets
Discarded	Total count of the discarded packets
Fragmented	Total count of the IPv6 packets successfully fragmented
Fragments	Total count of the sent fragments
Fragments failed	Total count of the IPv6 packets that fail to be fragmented
Multicast	Total count of the sent multicast packets
Received packets	Statistics about the received packets
Total	Total count of the received packets
Local host	Total count of the packets received by local hosts
Hop count exceeded	Total count of the packets with excessive hop count
Header error	Total count of the packets with wrong header. The errors in the header include version number mismatch, other format errors, hop count exceeded, and errors discovered in processing their IPv6 options.
Too big	Total count of the received packets that cannot be forwarded because of excessive sizes
Routing failed	Total count of the packets that fail to be routed
Address error	Total count of the packets that carry wrong IP addresses
Protocol error	Total count of the packets that carry wrong protocol types
Truncated	Total count of the packets discarded because the actual packet length is shorter than that specified in the packet length field
Option error	Total count of the packets that carry wrong options
Fragments	Total count of the received fragments
Reassembled	Total count of the packets successfully reassembled
Reassembly timeout	Total count of the packets that fail to be reassembled because of timeout
Fragments overlap	Total count of overlapped fragments
Extension Header	Total count of the IPv6 extension headers
Hop-by-Hop Options	Total count of the hop-by-hop options headers
Mobility Header	Total count of the mobility headers
Destination Options	Total count of the destination options headers
Routing Header	Total count of the routing options headers
Fragment Header	Total count of the fragment headers
Authentication Header	Total count of the authentication headers
Encapsulation Header	Total count of the encapsulation headers
No header	Total count of the packets without headers
TLV Length error	Total count of the extension headers in which the TLV length field is wrong
Header Length error	Total count of the extension headers in which the length field is wrong
Unknown header type	Total count of the unknown extension header types
Unknown TLV type	Total count of the unknown TLV types