display ipv6 interface

Syntax

display ipv6 interface [ interface-type [ interface-number ] ] [ brief ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

interface-type: Interface type.

interface-number: Interface number.

brief: Displays brief IPv6 information about an interface.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display ipv6 interface to display IPv6 information about an interface.

If interface-type interface-number is not specified, this command displays IPv6 information about all interfaces.
If only interface-type is specified, this command displays IPv6 information about the interfaces of the specified type.
If interface-type interface-number is specified, this command displays IPv6 information about the specified interface. If the brief keyword is also specified, this command displays brief IPv6 information about the interface.

Examples

# Display IPv6 information about VLAN-interface 2.

<Sysname> display ipv6 interface vlan-interface 2
Vlan-interface2 current state :UP
Line protocol current state :UP
IPv6 is enabled, link-local address is FE80::1234:56FF:FE65:4322
  Global unicast address(es):
    2001::1, subnet is 2001::/64
10::1234:56FF:FE65:4322, subnet is 10::/64 [AUTOCFG]
      [valid lifetime 4641s/preferred lifetime 4637s]
  Joined group address(es):
    FF02::1:FF00:1
    FF02::1:FF65:4322
    FF02::2
    FF02::1
  MTU is 1500 bytes
  ND DAD is enabled, number of DAD attempts: 1
  ND reachable time is 30000 milliseconds
  ND retransmit interval is 1000 milliseconds
  Hosts use stateless autoconfig for addresses
IPv6 Packet statistics:
  InReceives:                   0
  InTooShorts:                  0
  InTruncatedPkts:             0
  InHopLimitExceeds:           0
  InBadHeaders:                 0
  InBadOptions:                 0
  ReasmReqds:                   0
  ReasmOKs:                     0
  InFragDrops:                  0
  InFragTimeouts:               0
  OutFragFails:                 0
  InUnknownProtos:              0
  InDelivers:                   0
  OutRequests:                  0
  OutForwDatagrams:             0
  InNoRoutes:                    0
  InTooBigErrors:               0
  OutFragOKs:                   0
  OutFragCreates:               0
  InMcastPkts:                  0
  InMcastNotMembers:            0
  OutMcastPkts:                 0
  InAddrErrors:                 0
  InDiscards:                    0
  OutDiscards:                   0

Table 31: Command output

Field	Description
Vlan-interface2 current state	Physical state of the interface: Administratively DOWN—The VLAN interface is administratively down. The interface is shut down by using the shutdown command. DOWN—The VLAN interface is administratively up but its physical state is down. No ports in the VLAN are up due to a connection or link failure. UP—The administrative and physical states of the VLAN interface are both up.
Line protocol current state	Link layer protocol state of the interface: DOWN—The link layer protocol state of the VLAN interface is down. UP—The link layer protocol state of the VLAN interface is up.
IPv6 is enabled	IPv6 packet forwarding state of the interface. (After an IPv6 address is configured for an interface, IPv6 is automatically enabled on it. IPv6 packet forwarding is enabled in the example.)
link-local address	Link-local address configured for the interface.
Global unicast address(es)	Global unicast addresses configured for the interface.
valid lifetime	Valid lifetime of the global unicast address obtained through stateless autoconfiguration.
preferred lifetime	Preferred lifetime of the global unicast address obtained through stateless autoconfiguration.
Joined group address(es)	Addresses of multicast groups that the interface has joined.
MTU	Maximum transmission unit of the interface.
ND DAD is enabled, number of DAD attempts	Whether Duplicate Address Detection (DAD) is enabled. In this example, DAD is enabled. If DAD is enabled, the number of attempts to send a Neighbor Solicitation (NS) message for DAD (configured by using the ipv6 nd dad attempts command) is also displayed. If DAD is disabled, ND DAD is disabled is displayed. (You can disable DAD by setting the number of attempts to send an NS message for DAD to 0.)
ND reachable time	Time that a neighboring node is considered reachable after reachability has been confirmed.
ND retransmit interval	Interval for retransmitting an NS message.
Hosts use stateless autoconfig for addresses	Hosts use stateless autoconfiguration mode to acquire IPv6 addresses.
InReceives	All IPv6 packets received by the interface, including all types of error packets.
InTooShorts	Received IPv6 packets that are too short, with a length less than 40 bytes, for example.
InTruncatedPkts	Received IPv6 packets with a length less than that specified in the packets.
InHopLimitExceeds	Received IPv6 packets with a hop count exceeding the limit.
InBadHeaders	Received IPv6 packets with bad basic headers.
InBadOptions	Received IPv6 packets with bad extension headers.
ReasmReqds	Received IPv6 fragments.
ReasmOKs	Number of packets after reassembly rather than the number of fragments.
InFragDrops	IPv6 fragments discarded due to certain error.
InFragTimeouts	IPv6 fragments discarded because the interval for which they had stayed in the system buffer exceeded the specified period.
OutFragFails	Packets failed in fragmentation on the outbound interface.
InUnknownProtos	Received IPv6 packets with unknown or unsupported protocol type.
InDelivers	Received IPv6 packets that were delivered to application layer protocols (such as ICMPv6, TCP, and UDP).
OutRequests	Local IPv6 packets sent by IPv6 application protocols.
OutForwDatagrams	Packets forwarded by the outbound interface.
InNoRoutes	IPv6 packets that were discarded because no matched route can be found.
InTooBigErrors	IPv6 packets that were discarded because they exceeded the path MTU.
OutFragOKs	Packets that were fragmented on the outbound interface.
OutFragCreates	Number of packet fragments after fragmentation on the outbound interface.
InMcastPkts	IPv6 multicast packets received on the interface.
InMcastNotMembers	Incoming IPv6 multicast packets that were discarded because the interface did not belong to the corresponding multicast groups.
OutMcastPkts	IPv6 multicast packets sent by the interface.
InAddrErrors	IPv6 packets that were discarded due to invalid destination addresses.
InDiscards	Received IPv6 packets that were discarded due to resource problems rather than packet content errors.
OutDiscards	Sent packets that were discarded due to resource problems rather than packet content errors.

# Display brief IPv6 information about all interfaces.

<Sysname> display ipv6 interface brief
*down: administratively down
(s): spoofing
InterfacePhysicalProtocolIPv6 Address 
Vlan-interface1downdownUnassigned
Vlan-interface2upup2001::1
Vlan-interface100updownUnassigned

Table 32: Command output

Field	Description
*down: administratively down	The interface is down. The interface is shut down by using the shutdown command.
(s): spoofing	Spoofing attribute of the interface. The link protocol state of the interface is up, but the link does not exist, or the link is established on demand, instead of being permanent.
Interface	Name of the interface.
Physical	Physical state of the interface: down—The VLAN interface is administratively down. The interface is shut down using the shutdown* command. down—The VLAN interface is administratively up but its physical state is down. No port in the VLAN is up due to a connection or link failure. up—The administrative and physical states of the VLAN interface are both up.
Protocol	Link layer protocol state of the interface: down—The network layer protocol state of the VLAN interface is down. up—The network layer protocol state of the VLAN interface is up.
IPv6 Address	IPv6 address of the interface. Only the first of configured IPv6 addresses is displayed. If no address is configured for the interface, Unassigned will be displayed.

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