H3C S3100 Series Ethernet Switches command Manual-Release 21XX Series(V1.06)

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36-IPv6 Management Commands
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36-IPv6 Management Commands 159.39 KB

Basic IPv6 Configuration Commands

display dns ipv6 dynamic-host

Syntax

display dns ipv6 dynamic-host

View

Any view

Parameters

None

Description

Use the display dns ipv6 dynamic-host command to display IPv6 dynamic domain name information in the cache, including the domain name, IPv6 address, and TTL of the DNS entries.

You can use the reset dns ipv6 dynamic-host command to clear all IPv6 dynamic domain name information from the cache.

Examples

# Display IPv6 dynamic domain name information in the cache.

<Sysname> display dns ipv6 dynamic-host

No. Domain-name           IPv6 Address                             TTL

1   aaa                   2001::2                                   6

Table 1-1 Description on the fields of the display dns ipv6 dynamic-host command

Field

Description

No.

Sequence number

Domain-name

Domain name

IPv6 Address

IPv6 address of the corresponding domain name

TTL

Time-to-live of the domain name in the cache in seconds

 

When you use the display dns ipv6 dynamic-host command to check the IPv6 dynamic domain names in the cache, the system will display the first 21 characters of the domain names if they contain more than 21 characters. This is because the domain name displayed in the Domain-name field can be up to 21 characters in length.

 

display ipv6 fib

Syntax

display ipv6 fib

View

Any view

Parameters

None

Description

Use the display ipv6 fib command to display all the IPv6 FIB entries.

The switch looks up a matching IPv6 FIB entry for forwarding an IPv6 packet.

Examples

# Display all the IPv6 FIB entries.

<Sysname> display ipv6 fib

FIB Table:

 Total number of Routes : 5

 Flag:

  U:Useable   G:Gateway   H:Host   B:Blackhole   D:Dynamic   S:Static

Destination:    ::1                                     PrefixLength : 128

NextHop    :    ::1                                     Flag         : HU

TimeStamp  :    Date- 5/7/2006, Time- 14:35:32

Interface  :    InLoopBack0

Destination:    FE80::                                  PrefixLength : 10

NextHop    :    ::                                      Flag         : BU

TimeStamp  :    Date- 5/7/2006, Time- 14:35:32

Interface  :    NULL0

Destination:    2008::                                  PrefixLength : 64

NextHop    :    2008::5600                              Flag         : U

TimeStamp  :    Date- 5/7/2006, Time- 14:35:32

Interface  :    Vlan-interface1

Destination:    2008::5600                              PrefixLength : 128

NextHop    :    ::1                                     Flag         : HU

TimeStamp  :    Date- 5/7/2006, Time- 14:35:32

Interface  :    InLoopBack0

Destination:    2001::                                  PrefixLength : 64

NextHop    :    2008::3610                              Flag         : GSU

TimeStamp  :    Date- 5/7/2006, Time- 14:35:32

Interface  :    Vlan-interface1

Table 1-2 Description on the fields of the display ipv6 fib command

Field

Description

Total number of Routes

Total number of routes in the FIB

Destination

Destination address to which a packet is forwarded

PrefixLength

Prefix length of the destination address

NextHop

Next hop address when a packet is forwarded to the destination

Flag

Route flag:

“U” Usable route

“G” Gateway route

“H” — Host route

“B” — Blackhole route

“D” — Dynamic route

“S” — Static route

TimeStamp

Generation time of an FIB entry

Interface

Interface from which a packet is forwarded

 

display ipv6 host

Syntax

display ipv6 host

View

Any view

Parameters

None

Description

Use the display ipv6 host command to display the mapping between host name and IPv6 address.

Related commands: ipv6 host.

Examples

# Display the mapping between host name and IPv6 address.

<Sysname> display ipv6 host

Host                 Age           Flags  IPv6Address (es)

SWB                  0             static  2002::1

Table 1-3 Description on the fields of the display ipv6 host command

Field

Description

Host

Host name

Age

Time for the entry to live, displayed as 0 in the case of static configuration.

Flags

Flag indicating whether the entry is configured statically or acquired dynamically

IPv6Address (es)

IPv6 address corresponding to a host name

 

display ipv6 interface

Syntax

display ipv6 interface [ interface-type interface-number | brief ]

View

Any view

Parameters

interface-type: Interface type.

interface-number: Interface number.

brief: Displays the brief IPv6 information of an interface.

Description

Use the display ipv6 interface command to display the IPv6 information of a specified interface.

If no interface is specified, the IPv6 information of all interfaces for which IPv6 addresses can be configured is displayed; if only interface-type is specified, the IPv6 information of the interfaces of the specified type for which IPv6 addresses can be configured is displayed; if interface-type interface-number is specified, the IPv6 information of the specified interface is displayed.

If the brief keyword is specified, the brief IPv6 information of the interface is displayed.

Examples

# Display the IPv6 information of a VLAN interface.

<Sysname> display ipv6 interface Vlan-interface 1

Vlan-interface1 current state :UP

Line protocol current state :UP

IPv6 is enabled, link-local address is FE80::2E0:FCFF:FE00:C

  Global unicast address(es):

    2008::5600, subnet is 2008::/64

  Joined group address(es):

    FF02::1:FF00:5600

    FF02::1:FF00:C

    FF02::1

  MTU is 1500 bytes

  ND DAD is enabled, number of DAD attempts: 5

  ND reachable time is 30000 milliseconds

  ND retransmit interval is 1000 milliseconds

  Hosts use stateless autoconfig for addresses

Table 1-4 Description on the fields of the display ipv6 interface command

Field

Description

Vlan-interface1 current state

VLAN interface link state:

l      Administratively DOWN: Indicates the VLAN interface is administratively down; that is, the interface is shut down using the shutdown command.

l      DOWN: Indicates the VLAN interface is administratively up but its physical state is down; that is, no ports in the VLAN are up, which may be caused by a link failure.

l      UP: Indicates the administrative and physical states of the VLAN interface are both up.

Line protocol current state

Link layer protocol state of an interface:

l      DOWN: Indicates the link layer protocol state of the VLAN interface is down, generally because no IP address is configured.

l      UP: Indicates the link layer protocol state of the VLAN interface is up.

IPv6 is enabled

IPv6 forwarding state of an interface (after an IPv6 address is configured for an interface, IPv6 is automatically enabled on it; IPv6 is enabled in the example)

link-local address

Link-local address configured on an interface

Global unicast address(es)

Aggregatable global unicast address configured on an interface

Joined group address(es)

Address of the multicast group that an interface joins

MTU

Maximum transmission unit of an interface

ND DAD is enabled, number of DAD attempts

Number of duplicate address detection (DAD) attempts, with DAD enabled

l      If DAD is enabled, the number of neighbor request messages is also displayed (configured by using the ipv6 nd dad attempts command)

l      If DAD is disabled, “ND DAD is disabled” is displayed. (You can set the number of neighbor request messages for DAD to 0 to disable this function.)

ND reachable time

Neighbor reachable time (which can be configured by using the ipv6 nd nud reachable-time command)

ND retransmit interval

Interval for retransmitting a neighbor solicitation (NS) message (which can be configured by using the ipv6 nd ns retrans-timer command)

Hosts use stateless autoconfig for addresses

Hosts use stateless auto-configuration mode to acquire IPv6 addresses

 

#: View the brief IPv6 information of all interfaces.

<Sysname> display ipv6 interface brief

*down: administratively down

(s): spoofing

Interface                                Physical   Protocol   IPv6 Address

Vlan-interface1                            up         up       2008::5600

Table 1-5 Description on the fields of the display ipv6 interface brief command

Field

Description

*down: administratively down

The interface is down, that is, the interface is disabled by using the shutdown command.

(s) : spoofing

Spoofing attribute of the interface, that is, 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

Interface link state:

l      *down: Indicates the VLAN interface is administratively down; that is, the interface is shut down using the shutdown command.

l      down: Indicates the VLAN interface is administratively up but its physical state is down; that is, no port in the VLAN is up, which may be caused by a link failure.

l      up: Indicates the administrative and physical states of the VLAN interface are both up.

Protocol

Link protocol state of an interface

l      down: Indicates the link layer protocol state of the VLAN interface is down, generally because no IP address is configured.

l      up: Indicates the link layer protocol state of the VLAN interface is up.

IPv6 Address

IPv6 address of the interface (If no address is configured for the interface, “Unassigned” will be displayed.)

 

display ipv6 neighbors

Syntax

display ipv6 neighbors { ipv6-address | all | dynamic | static | interface interface-type interface-number | vlan vlan-id } [ | { begin | exclude | include } regular-expression ]

View

Any view

Parameters

ipv6-address: IPv6 address whose neighbor information is to be displayed.

all: Displays information of all neighbors, including neighbors acquired dynamically and configured statically.

dynamic: Displays information of all neighbors acquired dynamically.

static: Displays information of all neighbors configured statically.

interface interface-type interface-number: Displays information of the neighbors of a specified interface.

vlan vlan-id: Displays information of the neighbors of a specified VLAN, in the range of 1 to 4094.

|: Uses a regular expression to match neighbor entries.

regular-expression: A case-sensitive string for matching.

l          begin: Displays the first matching neighbor entry and all the neighbor entries following it.

l          exclude: Displays the neighbor entries not matching the specified regular expression.

l          include: Displays the neighbor entries matching the specified regular expression.

The regular expression supports various special characters. For details, refer to the display current-configuration command in Configuration File Management Command.

Description

Use the display ipv6 neighbors command to display neighbor information.

You can use the reset ipv6 neighbors command to clear specific IPv6 neighbor information.

Related commands: ipv6 neighbor, reset ipv6 neighbors.

Examples

# View all neighbor information.

<Sysname> display ipv6 neighbors all

                Type: S-Static    D-Dynamic

IPv6 Address                 Link-layer     VID  Interface    State T Age

2008::110                    0015-e9ac-69b6 1    GE1/1/2      REACH S -

FE80::215:E9FF:FEAC:69B6     0015-e9ac-69b6 1    GE1/1/2      STALE D 22

FE80::20F:E2FF:FE00:2201     000f-e200-2201 1    GE1/1/2      STALE D 28

2008::3610                   000f-e200-2201 1    GE1/1/2      STALE D 28

Table 1-6 Description on the fields of the display ipv6 neighbors command

Field

Description

IPv6 Address

IPv6 address of a neighbor

Link-layer

Link layer address (MAC address of a neighbor)

VID

ID of the VLAN to which the interface connected to a neighbor belongs

Interface

Interface connected to a neighbor

State

State of a neighbor, which can be:

l      INCMP: Address resolution is in progress, so the link layer address of the neighbor is unknown yet.

l      REACH: The neighbor is reachable.

l      STALE: The reachability to the neighbor is unknown. The device does not verify the reachability to the neighbor unless it sends a packet to the neighbor.

l      DELAY: The reachability to the neighbor is unknown. The device will send a neighbor request message after a delay time.

l      PROBE: The reachability to the neighbor is unknown. The device sent a neighbor request message to verify the reachability.

T

Type of neighbor information, including S (static configuration) and D (dynamic acquisition).

Age

l      For a static entry, “-“ is displayed.

l      For a dynamic entry, the time (in seconds) since it is reachable last time is displayed, and if it is never reachable, “#” is displayed (for a dynamic neighbor only).

 

display ipv6 neighbors count

Syntax

display ipv6 neighbors { all | dynamic | static | interface interface-type interface-number | vlan vlan-id } count

View

Any view

Parameters

all: Displays the total number of all neighbor entries, including neighbor entries acquired dynamically and configured statically.

dynamic: Displays the total number of all neighbor entries acquired dynamically.

static: Displays the total number of all neighbor entries configured statically.

interface interface-type interface-number: Displays the total number of neighbor entries of a specified interface.

vlan vlan-id: Displays the total number of neighbor entries of a specified VLAN, in the range of 1 to 4,094.

count: Number of neighbor entries.

Description

Use the display ipv6 neighbors count command to display the total number of neighbor entries satisfying the specified condition.

Examples

# Display the total number of neighbor entries acquired dynamically.

<Sysname> display ipv6 neighbors dynamic count

Total dynamic entry(ies):  3

display ipv6 route-table

Syntax

display ipv6 route-table [ verbose ]

View

Any view

Parameters

verbose: Displays detailed information about the IPv6 routing table.

Description

Use the display ipv6 route-table command to display brief information about the routing table, including the destination IP address, prefix length, type of protocol, next hop, egress interface, and so on. In this case, only the valid route entries are displayed,

Use the display ipv6 route-table verbose command to display detailed information about the routing table. In this case, both valid routes and invalid routes are displayed.

Examples

# Display summary information about the routing table.

<Sysname> display ipv6 route-table

 

Routing Table:

Destinations : 4      Routes : 4

 

Destination: ::1/128                                      Protocol: Direct

NextHop    : ::1

Interface  : InLoopBack0

 

Destination: 2008::/64                                    Protocol: Direct

NextHop    : 2008::32

Interface  : Vlan-interface1

 

Destination: 2008::32/128                                 Protocol: Direct

NextHop    : ::1

Interface  : InLoopBack0

 

Destination: FE80::/10                                    Protocol: Direct

NextHop    : ::

Interface  : NULL0              

Table 1-7 Description on the fields of the display ipv6 route-table command

Field

Description

Destinations

Number of reachable destination networks/hosts

Routes

Number of routing entries

Destination

Destination network/host IPv6 address. The part following “/” indicates the prefix length.

Protocol

Routing protocol discovering the route

NextHop

Next hop address

Interface

Egress interface, through which a packet is sent.

 

# Display detailed information about the routing table.

<Sysname> display ipv6 route-table verbose

 

Routing Table:

Destinations : 2      Routes : 2

 

Destination: ::                                       PrefixLength: 0

NextHop    : 1:1:4::1                                 Protocol    : Static

Interface  : Vlan-interface1                             State        : Active

 

Destination: ::1                                      PrefixLength: 128

NextHop    : ::1                                      Protocol    : Direct

Interface  : InLoopBack0                              State       : Active

Table 1-8 Description on the fields of the display ipv6 route-table verbose command

Field

Description

Destinations

Number of reachable destination networks/hosts

Routes

Number of routing entries

Destination

Destination network/host IPv6 address.

PrefixLength

Prefix length of the destination IPv6 address

NextHop

Next hop address

Protocol

Routing protocol discovering the route

Interface

Egress interface

State

Routing entry state: Active (valid route) or Inactive (invalid route).

 

display ipv6 socket

Syntax

display ipv6 socket [ socktype socket-type ] [ task-id socket-id ]

View

Any view

Parameters

socket-type: Type of a socket, in the range of 1 to 3. The value “1” represents a TCP socket, “2” a UDP socket, and “3” a raw IP socket.

task-id: ID of a task, in the range of 1 to 100.

socket-id: ID of a socket, in the range of 0 to 3072.

Description

Use the display ipv6 socket command to display information related to a specified socket.

With no argument specified, this command displays the information about all the sockets; with only the socket type specified, the command displays the information about sockets of the specified type; with the socket type, task ID and socket ID specified, the command displays the information about the specified socket.

Examples

# Display information related to a specified socket.

<Sysname> display ipv6 socket

SOCK_STREAM:

Task = VTYD(43), socketid = 1, Proto = 6,

LA = ::->23, FA = ::->0,

sndbuf = 8192, rcvbuf = 8192, sb_cc = 0, rb_cc = 0,

socket option = SO_ACCEPTCONN SO_REUSEADDR SO_KEEPALIVE SO_REUSEPORT SO_SETKEEPALIVE,

socket state = SS_PRIV SS_ASYNC

SOCK_DGRAM:

SOCK_RAW:

Table 1-9 Description on the fields of the display ipv6 socket command

Field

Description

SOCK_STREAM

Socket type, which can be:

l      SOCK_STREAM: Refers to TCP.

l      SOCK_DGRAM: Refers to UDP.

l      SOCK_RAW: Refers to raw IP.

Task

Task name and ID of the created socket

socketid

ID assigned by the kernel to the created socket

Proto

Protocol ID

LA

Local address and local port number

FA

Remote address and remote port number

sndbuf

Size of the sending buffer

rcvbuf

Size of the receiving buffer

sb_cc

Number of bytes sent by the sending buffer

rb_cc

Number of bytes received by the receiving buffer

socket option

Socket option set by the application

socket state

State of the socket

SOCK_DGRAM

UDP socket

SOCK_RAW

Raw IP socket

 

display ipv6 statistics

Syntax

display ipv6 statistics

View

Any view

Parameters

None

Description

Use the display ipv6 statistics command to display statistics of IPv6 packets and ICMPv6 packets.

You can use the reset ipv6 statistics command to clear all IPv6 and ICMPv6 packet statistics.

Examples

# View the statistics of IPv6 packets and IPv6 ICMP packets.

<Sysname> display ipv6 statistics

  IPv6 Protocol:

    Sent packets:

      Total:      580

        Local sent out:       550          forwarded:           0

        raw packets:          30           discarded:           0

        routing failed:       0            fragments:           0

        fragments failed:     0

    Received packets:

      Total:      572

        local host:           572          hopcount exceeded:   0

        format error:         0            option error:        0

        protocol error:       0            fragments:           0

        reassembled:          0            reassembly failed:   0

        reassembly timeout:   0

  ICMPv6 protocol:

    Sent packets:

      Total:      132

        unreached:           0             too big:              0

        hopcount exceeded:   0             reassembly timeout:   0

        parameter problem:   0

        echo request:        30            echo replied:         17

        neighbor solicit:    43            neighbor advert:      42

        router solicit:      0             router advert:        0

        redirected:          0

      Send failed:

        ratelimited:         0             other errors:         0

    Received packets:

      Total:      126

        checksum error:      0             too short:            0

        bad code:            0

        unreached:           10            too big:              0

        hopcount exceeded:   0             reassembly timeout:   0

        parameter problem:   0             unknown error type:   0

        echoed:              17            echo replied:         30

        neighbor solicit:    34            neighbor advert:      35

        router solicit:      0             router advert:        0

        redirected:          0             router renumbering:   0

        unknown info type:   0

      Deliver failed:

        bad length:          0             ratelimited:          0

Table 1-10 Description on the fields of the display ipv6 statistics command

Field

Description

IPv6 Protocol:

Statistics of IPv6 packets

Sent packets:

 Total:  580

  Local sent out:   550

  forwarded:         0

  raw packets:      0  

  discarded:          0

  routing failed:     0   

  fragments:          0

  fragments failed: 0

Statistics of sent IPv6 packets, including:

l      Total number of sent packets

l      Number of packets sent locally

l      Number of forwarded packets

l      Number of packets sent via raw socket

l      Number of discarded packets

l      Number of packets with routing failure

l      Number of sent fragment packets

l      Number of fragment sending failures

Received packets:

 Total:    572

  local host:       572 

  hopcount exceeded:  0

  format error:    0 

  option error:    0

  protocol error:  0

  fragments:      0

  reassembled:    0 

  reassembly failed:  0

  reassembly timeout:  0

Statistics of received IPv6 packets, including:

l      Total number of received packets

l      Number of packets received locally

l      Number of packets exceeding the hops

l      Number of packets in an incorrect format

l      Number of packets with incorrect options

l      Number of packets with incorrect protocol

l      Number of received fragment packets

l      Number of reassembled packets

l      Number of packets whose reassembly fails

l      Number of packets whose reassembly times out

ICMPv6 protocol:

Statistics of ICMPv6 packets

Sent packets:

  Total:    132

  unreached:    0 

  too big:    0

  hopcount exceeded:  0

  reassembly timeout:  0

  parameter problem:   0

  echo request:  30

  echo replied:    17

  neighbor solicit: 43 

  neighbor advert:    42

  router solicit:    0

  router advert:    0

  redirected:    0

  Send failed:

  ratelimited:    0

  other errors:    0

Statistics of sent ICMPv6 packets, including:

l      Total number of sent packets

l      Number of packets whose destination is unreachable

l      Number of too large packets

l      Number of packets exceeding the hop limit

l      Number of packets whose fragmentation and reassembly time out

l      Number of packets with parameter errors

l      Number of request packets

l      Number of response packets

l      Number of neighbor solicitation packets

l      Number of neighbor advertisement packets

l      Number of router solicit packets

l      Number of router advertisement packets

l      Number of redirected packets

l      Number of packets failing to be sent because of rate limitation

l      Number of packets with other errors

Received packets:

  Total:    126

  checksum error:    0 

  too short:    0

  bad code:    0

  unreached:    10 

  too big:    0

  hopcount exceeded:  0

  reassembly timeout:  0

  parameter problem:  0

  unknown error type:  0

  echoed:    17 

  echo replied:    30

  neighbor solicit:  34 

  neighbor advert:   35

  router solicit:     0 

  router advert:    0

  redirected:    0 

  router renumbering:   0

  unknown info type:   0

  Deliver failed:

  bad length:     0 

  ratelimited:      0

Statistics of received ICMPv6 packets, including:

l      Total number of received packets

l      Number of packets with checksum errors

l      Number of too small packets

l      Number of packets with error codes

l      Number of packets whose destination is unreachable

l      Number of too large packets

l      Number of packets exceeding the hop limit

l      Number of packets whose fragmentation and  reassembly time out

l      Number of packets with parameter errors

l      Number of packets with unknown errors

l      Number of request packets

l      Number of response packets

l      Number of neighbor solicitation messages

l      Number of neighbor advertisement packets

l      Number of router solicitation packets

l      Number of router advertisement packets

l      Number of redirected packets

l      Number of packets  recounted by the router

l      Number of unknown information type of packets

l      Number of packets with a incorrect size

l      Number of packets failing to be received because of rate limitation

 

display tcp ipv6 statistics

Syntax

display tcp ipv6 statistics

View

Any view

Parameters

None

Description

Use the display tcp ipv6 statistics command to display statistics of IPv6 TCP packets.

You can use the reset tcp ipv6 statistics command to clear statistics of all IPv6 TCP packets.

Examples

# View the statistics of received and sent IPv6 TCP packets.

<Sysname> display tcp ipv6 statistics

Received packets:

     Total: 436

     packets in sequence: 182 (327 bytes)

     window probe packets: 0, window update packets: 0

     checksum error: 0, offset error: 0, short error: 0

     duplicate packets: 0 (0 bytes), partially duplicate packets: 0 (0 bytes)

     out-of-order packets: 3 (0 bytes)

     packets with data after window: 0 (0 bytes)

     packets after close: 0

     ACK packets: 239 (6141 bytes)

     duplicate ACK packets: 69, too much ACK packets: 0

Sent packets:

     Total: 331

     urgent packets: 0

     control packets: 5 (including 0 RST)

     window probe packets: 0, window update packets: 0

     data packets: 306 (6135 bytes) data packets retransmitted: 0 (0 bytes)

     ACK only packets: 20 (14 delayed)

Retransmitted timeout: 0, connections dropped in retransmitted timeout: 0

Keepalive timeout: 66, keepalive probe: 66, Keepalive timeout, so connections disconnected : 0

Initiated connections: 2, accepted connections: 3, established connections: 3

Closed connections: 5 (dropped: 0, initiated dropped: 2)

Table 1-11 Description on the fields of the display tcp ipv6 statistics command

Field

Description

Received packets:

  Total: 436

  packets in sequence: 182 (327 bytes)

  window probe packets: 0, window update packets: 0

  checksum error: 0, offset error: 0, short error: 0

  duplicate packets: 0 (0 bytes), partially duplicate packets: 0 (0 bytes)

  out-of-order packets: 3 (0 bytes)

  packets with data after window: 0 (0 bytes)

  packets after close: 0

  ACK packets: 239 (6141 bytes)

  duplicate ACK packets: 69, too much ACK packets: 0

Statistics of received packets, including:

l      Total number of received packets

l      Number of packets received in sequence

l      Number of  window probe packets

l      Number of  window size update packets

l      Number of packets with checksum errors

l      Number of packets with offset errors

l      Number of packets whose total length is less than that specified by the packet header

l      Number of duplicate packets

l      Number of partially duplicate packets

l      Number of out-of-order packets

l      Number of packets exceeding the receiving window size

l      Number of packets after the connection is closed

l      Number of  ACK packets

l      Number of duplicate ACK packets

l      Number of excessive ACK packets

Sent packets:

  Total: 331

  urgent packets: 0

  control packets: 5 (including 0 RST)

  window probe packets: 0, window update packets: 0

  data packets: 306 (6135 bytes) data packets retransmitted: 0 (0 bytes)

  ACK only packets: 20 (14 delayed)

Statistics of sent packets, including:

l      Total number of packets

l      Number of packets containing an urgent indicator

l      Number of control packets

l      Number of window probe packets

l      Number of window update packets

l      Number of data packets

l      Number of retransmitted packets

l      Number of ACK only packets

Retransmitted timeout

Number of packets whose retransmission times out

connections dropped in retransmitted timeout

Number of connections dropped because of retransmission timeout

Keepalive timeout

Number of keepalive timeouts

Keepalive probe

Number of keepalive probes

Keepalive timeout, so connections disconnected

Number of connections dropped because of keepalive response timeout

Initiated connections

Number of initiated connections

accepted connections

Number of accepted connections

established connections

Number of established connections

Closed connections

Number of closed connections

dropped

Number of dropped connections (after receiving SYN from the peer)

initiated dropped

Number of connection failures (before receiving SYN from the peer)

 

display tcp ipv6 status

Syntax

display tcp ipv6 status

View

Any view

Parameters

None

Description

Use the display tcp ipv6 status command to display the IPv6 TCP connection status, including IP address of the IPv6 TCP control block, local and peer IPv6 addresses, and status of the IPv6 TCP connection.

Examples

# View the IPv6 TCP connection status.

<Sysname> display tcp ipv6 status

TCP6CB   Local Address             Foreign Address           State

83a9fba4 ::->23                    ::->0                     Listening

Table 1-12 Description on the fields of the display tcp ipv6 status command

Field

Description

TCP6CB

IPv6 address of the TCP control block (hexadecimal)

Local Address

Local IPv6 address

Foreign Address

Remote IPv6 address

State

TCP connection status, including: Closed, Listening, Syn_Sent, Syn_Rcvd, Established, Close_Wait, Fin_Wait1, Closing, Last_Ack, Fin_Wait2, Time_Wait

 

display udp ipv6 statistics

Syntax

display udp ipv6 statistics

View

Any view

Parameters

None

Description

Use the display udp ipv6 statistics command to display statistics of IPv6 UDP packets.

You can use the reset udp ipv6 statistics command to clear statistics of all IPv6 UDP packets.

Examples

# View statistics of IPv6 UDP packets.

<Sysname> display udp ipv6 statistics

Received packets:

     Total: 10

     checksum error: 0

     shorter than header: 0, data length larger than packet: 0

     unicast(no socket on port): 0

     broadcast/multicast(no socket on port): 0

     not delivered, input socket full: 0

     input packets missing pcb cache: 0

Sent packets:

     Total: 21

Table 1-13 Description on the fields of the display udp ipv6 statistics command

Field

Description

Total

Total number of received/sent packets

checksum error

Total number of packets with an invalid checksum

shorter than header

Total number of IPv6 UDP packets whose total length is less than that specified by the packet header

data length larger than packet

Total number of packets whose data length exceeds that specified by the packet header

unicast(no socket on port)

Total number of received unicast packets without any socket on a port

broadcast/multicast(no socket on port)

Total number of received broadcast/multicast packets without any socket on a port

not delivered, input socket full

Number of packets not handled because of the receiving buffer being full

input packet missing pcb cache

Number of packets that do not match any entry in the PCB cache

 

dns server ipv6

Syntax

dns server ipv6 ipv6-address [ interface-type interface-number ]

undo dns server ipv6 ipv6-address [ interface-type interface-number ]

View

VLAN interface view

Parameters

ipv6-address: IPv6 address of a DNS server.

interface-type interface-number: Interface type and interface number. It is required when the IPv6 address of the specified DNS server is a link-local address.

Description

Use the dns server ipv6 command to configure an IPv6 address for a DNS server.

Use the undo dns server ipv6 command to remove the configured DNS server.

By default, no DNS server is configured.

Examples

# Configure the IPv6 address 2002::1 for a DNS server.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] dns server ipv6 2002::1

ipv6 address

Syntax

ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }

undo ipv6 address [ ipv6-address prefix-length | ipv6-address/prefix-length ]

View

Interface view

Parameters

ipv6-address: IPv6 address.

prefix-length: Prefix length of an IPv6 address, in the range of 1 to 128.

Description

Use the ipv6 address command to configure a site-local address or global unicast address manually for an interface.

Use the undo ipv6 address command to remove the manually configured interface address.

By default, no site-local address or global unicast address is configured for an interface.

Note that:

l          An H3C S3100 Ethernet switch can have IPv6 unicast addresses configured on only one VLAN interface. Only one global unicast address or one site-local address can be configured for an interface.

l          You will remove all IPv6 addresses except the automatically configured link-local address if you carry out the undo ipv6 address command without any parameter specified.

Examples

# Set the aggregatable global IPv6 unicast address of VLAN-interface 1 to 2001::1 with prefix length 64.

Method I:

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface vlan-interface 1

[Sysname-Vlan-interface1] ipv6 address 2001::1/64

Method II:

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 address 2001::1 64

ipv6 address auto link-local

Syntax

ipv6 address auto link-local

undo ipv6 address auto link-local

View

VLAN interface view

Parameters

None

Description

Use the ipv6 address auto link-local command to automatically generate a link-local address for an interface.

Use the undo ipv6 address auto link-local command to remove the automatically generated link-local address for an interface.

By default, a link-local address is generated automatically after a site-local IPv6 address or global unicast address is configured for an interface.

Note that:

l          After an IPv6 site-local address or aggregatable global unicast address is configured for an interface, a link-local address is generated automatically. The automatically generated link-local address is the same as the one generated by using the ipv6 address auto link-local command.

l          The undo ipv6 address auto link-local command can be used only after the ipv6 address auto link-local command is executed. However, if an IPv6 site-local address or aggregatable global unicast address is already configured for an interface, the interface still has a link-local address because the system automatically generates one for the interface. If no IPv6 site-local address or aggregatable global unicast address is configured, the interface has no link-local address.

l          Manual assignment takes precedence over automatic generation. That is, if you first adopt automatic generation and then manual assignment, the manually assigned link-local address will overwrite the automatically generated one. If you first adopt manual assignment and then automatic generation, the automatically generated link-local address will not take effect and the link-local address of an interface is still the manually assigned one. If you delete the manually assigned address, the automatically generated link-local address is validated. For manually assignment of an IPv6 link-local address, refer to the ipv6 address link-local command.

Examples

# Configure the VLAN-interface 1 to automatically generate a link-local address.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 address auto link-local

ipv6 address eui-64

Syntax

ipv6 address ipv6-address/prefix-length eui-64

undo ipv6 address ipv6-address/prefix-length eui-64

View

VLAN interface view

Parameters

ipv6-address/prefix-length: IPv6 address and IPv6 prefix. The ipv6-address and prefix-length arguments jointly specify the prefix of an IPv6 address in the EUI-64 format. The prefix length of an EUI-64 address cannot be greater than 64.

Description

Use the ipv6 address eui-64 command to configure a site-local address or global unicast address in the EUI-64 format for an interface.

Use the undo ipv6 address eui-64 command to remove the configured site-local address or global unicast address in the EUI-64 format for an interface.

By default, no site-local address or global unicast address in the EUI-64 format is configured on the interface.

An IPv6 address in the EUI-64 format consists of a specific prefix and the MAC address of the local device, which can be displayed using the display ipv6 interface command.

Note that:

The prefix length should not be more than 64 bits when a aggregatable global unicast address(es) or site-local address(es) in the EUI-64 format is configured.

Examples

# Configure an IPv6 address in the EUI-64 format for the VLAN-interface 1. The prefix of the address is 2001::1/64, and the interface ID is generated based on the MAC address of the device.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 address 2001::1/64 eui-64

# Display the generated IPv6 address in the EUI-64 format.

[Sysname-Vlan-interface1] display ipv6 interface Vlan-interface 1

Vlan-interface1 current state :UP

Line protocol current state :UP

IPv6 is enabled, link-local address is FE80::2E0:FCFF:FE00:3100

  Global unicast address(es):

    2001::2E0:FCFF:FE00:3100, subnet is 2001::/64

  Joined group address(es):

    FF02::1:FF00:3100

    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

# Configure VLAN-interface 1 to generate an IPv6 address in the EUI-64 format based on the prefix 3001::/64.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 address 3001::/64 eui-64

ipv6 address link-local

Syntax

ipv6 address ipv6-address link-local

undo ipv6 address ipv6-address link-local

View

VLAN interface view

Parameters

ipv6-address: IPv6 link-local address. The first ten bits of an address must be 1111111010 (binary), that is, the first group of hexadecimals in the address must be FE80 to FEBF.

Description

Use the ipv6 address link-local command to configure a link-local address manually for a specified interface.

Use the undo ipv6 address link-local command to remove the configured link-local address for an interface.

Note that:

Manual assignment takes precedence over automatic generation. That is, if you first adopt automatic generation and then manual assignment, the manually assigned link-local address will overwrite the automatically generated one. If you first adopt manual assignment and then automatic generation, the automatically generated link-local address will not take effect and the link-local address of an interface is still the manually assigned one. If you delete the manually assigned address, the automatically generated link-local address is validated. For automatic generation of an IPv6 link-local address, refer to the ipv6 address auto link-local command.

Examples

# Configure a link-local address for the VLAN-interface 1.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 address fe80::1 link-local

ipv6 host

Syntax

ipv6 host hostname ipv6-address

undo ipv6 host hostname [ ipv6-address ]

View

System view

Parameters

hostname: Host name, a string of up to 20 characters. The character string can contain letters, numerals, “_”, “-“, or “.” and must contain at least one letter.

ipv6-address: IPv6 address.

Description

Use the ipv6 host command to configure the mapping between host name and IPv6 address.

Use the undo ipv6 host command to remove the mapping between host name and IPv6 address.

Each host name can correspond to only one IPv6 address. A newly configured IPv6 address will overwrite the previous one.

Related commands: display ipv6 host.

Examples

# Configure the mapping between host name and IPv6 address.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] ipv6 host aaa 2001::1

ipv6 icmp-error

Syntax

ipv6 icmp-error { bucket bucket-size | ratelimit interval }*

undo ipv6 icmp-error

View

System view

Parameters

bucket-size: Number of tokens in a token bucket, in the range of 1 to 200. The default value is 10.

interval: Update period of the token bucket in milliseconds, in the range of 0 to 2,147,483,647.

Description

Use the ipv6 icmp-error command to configure the maximum number of IPv6 ICMP error packets sent within a specified time.

Use the undo ipv6 icmp-error command to restore the update period and the capacity of the token bucket to the defaults.

By default, the size is 10 and the update period is 100 milliseconds. That is, at most 10 IPv6 ICMP error packets can be sent within 100 milliseconds.

Examples

# Set the capacity of the token bucket to 50 and the update period to 100 milliseconds. That is, at most 50 IPv6 ICMP error packets can be sent within 100 milliseconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] ipv6 icmp-error bucket 50 ratelimit 100

ipv6 nd dad attempts

Syntax

ipv6 nd dad attempts value

undo ipv6 nd dad attempts

View

VLAN interface view

Parameters

value: Number of attempts to send a neighbor solicitation message for duplicate address detection, in the range of 0 to 600. The default value is “1”. When it is set to 0, the duplicate address detection is disabled.

Description

Use the ipv6 nd dad attempts command to configure the attempts to send a neighbor solicitation message for duplicate address detection.

Use the undo ipv6 nd dad attempts command to restore the attempts to send a neighbor solicitation message for duplicate address detection to the default.

By default, the number of attempts to send a neighbor solicitation message for duplicate address detection is 1.

Related commands: display ipv6 interface.

Examples

# Set the attempts to send a neighbor solicitation message for duplicate address detection to 20.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 nd dad attempts 20

ipv6 nd hop-limit

Syntax

ipv6 nd hop-limit value

undo ipv6 nd hop-limit

View

System view

Parameters

value: Number of hops, in the range of 0 to 255.

Description

Use the ipv6 nd hop-limit command to configure the hop limit of ICMPv6 reply packets.

Use the undo ipv6 nd hop-limit command to restore the default.

By default, the hop limit of ICMPv6 reply packets is 64.

Examples

# Set the hop limit of ICMPv6 reply packets to 100.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] ipv6 nd hop-limit 100

ipv6 nd ns retrans-timer

Syntax

ipv6 nd ns retrans-timer value

undo ipv6 nd ns retrans-timer

View

VLAN interface view

Parameters

value: Interval for retransmitting an NS message in milliseconds, in the range of 1,000 to 3,600,000.

Description

Use the ipv6 nd ns retrans-timer command to set the interval for retransmitting an NS message.

Use the undo ipv6 nd ns retrans-timer command to restore the interval for retransmitting an NS message to the default.

By default, the local interface sends NS messages at intervals of 1,000 milliseconds

Related commands: display ipv6 interface.

Examples

# Specify the VLAN-interface 1 to send an NS message at intervals of 10,000 milliseconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 nd ns retrans-timer 10000

ipv6 nd nud reachable-time

Syntax

ipv6 nd nud reachable-time value

undo ipv6 nd nud reachable-time

View

VLAN interface view

Parameters

value: Neighbor reachable time in milliseconds, in the range of 1 to 3,600,000.

Description

Use the ipv6 nd nud reachable-time command to configure the neighbor reachable time on an interface.

Use the undo ipv6 nd nud reachable-time command to restore the default.

By default, the neighbor reachable time on the local interface is 30,000 milliseconds.

Related commands: display ipv6 interface.

Examples

# Set the neighbor reachable time on the VLAN-interface 1 to 10,000 milliseconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 nd nud reachable-time 10000

ipv6 neighbor

Syntax

ipv6 neighbor ipv6-address mac-address { vlan-id port-type port-number | interface interface-type interface-number }

undo ipv6 neighbor ipv6-address interface-type interface-number

View

System view

Parameters

ipv6-address: IPv6 address in a static neighbor entry.

mac-address: Link layer address in a static neighbor entry (48 bits long, in the format of H-H-H).

vlan-id: VLAN ID corresponding to a static neighbor entry, in the range of 1 to 4094.

port-type port-number: Ethernet port type and port number corresponding to a static neighbor entry.

interface-type interface-number: VLAN interface type and interface number corresponding to a static neighbor entry.

Description

Use the ipv6 neighbor command to configure a static neighbor entry.

Use the undo ipv6 neighbor command to remove a static neighbor entry.

Note that:

You can configure a static neighbor entry in two ways:

l          Mapping a VLAN interface to an IPv6 address and a link-layer address. The entry state is INCMP. After the switch get the layer 2 port information of the VLAN, the neighbor entry enters the REACH state.

l          Mapping a Layer 2 port in a VLAN to an IPv6 address and a link-layer address. The Layer 2 port specified by the port-type port-number argument must belong to the VLAN specified by the vlan-id argument, and the corresponding VLAN interface must exist. After you carry out the command, the device relates the VLAN interface to the IPv6 address to uniquely identify a static neighbor entry which is in REACH state.

You only need to specify the corresponding VLAN interface when removing a static neighbor entry related to that VLAN interface.

Related commands: display ipv6 neighbors.

Examples

# Configure a static neighbor entry for Ethernet 1/0/1 of VLAN 1.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] ipv6 neighbor 2000::1 fe-e0-89 1 Ethernet 1/0/1

ipv6 neighbors max-learning-num

Syntax

ipv6 neighbors max-learning-num number

undo ipv6 neighbors max-learning-num

View

VLAN interface view

Parameters

number: Maximum number of neighbors that can be dynamically learned by an interface, in the range of 1 to 2048.

Description

Use the ipv6 neighbors max-learning-num command to configure the maximum number of neighbors that can be dynamically learned on a specified interface.

Use the undo ipv6 neighbors max-learning-num command to restore the configuration to the default.

By default, the maximum number is 1024.

Examples

# Set the maximum number of neighbors that can be dynamically learned on the interface VLAN-interface 1.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ipv6 neighbors max-learning-num 10

ipv6 route-static

Syntax

ipv6 route-static ipv6-address prefix-length [ interface-type interface-number ] nexthop-address

undo ipv6 route-static ipv6-address prefix-length

View

System view

Parameters

ipv6-address prefix-length: Destination IPv6 address and prefix length.

interface-type interface-number: Type of egress interface and interface number.

nexthop-address: IPv6 address of the next hop.

Description

Use the Ipv6 route-static command to configure a static IPv6 route.

Use the undo ipv6 route-static command to remove a static IPv6 route.

By default, no IPv6 static route is configured.

If you specify the destination IP address of an IPv6 static route as ::/0, the route configured becomes a default IPv6 route. If the destination IP address of a packet does not match any entry in the routing table, the device will use a default IPv6 route to forward the IPv6 packet.

Related commands: display ipv6 route-table.

Examples

# Configure a static IPv6 route, with the destination address of 1:1:2::/48 and the next hop address of 1:1:3::1.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] ipv6 route-static 1:1:2:: 48 1:1:3::1

# Configure a static IPv6 route, with the next hop address of 1:1:4::1.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] ipv6 route-static :: 0 1:1:4::1

reset dns ipv6 dynamic-host

Syntax

reset dns ipv6 dynamic-host

View

User view

Parameters

None

Description

Use the reset dns ipv6 dynamic-host command to clear IPv6 dynamic domain name cache information.

You can use the display dns ipv6 dynamic-host command to display the current IPv6 dynamic domain name cache information.

Examples

# Clear IPv6 dynamic domain name cache information.

<Sysname> reset dns ipv6 dynamic-host

reset ipv6 neighbors

Syntax

reset ipv6 neighbors [ all | dynamic | interface interface-type interface-number | static ]

View

User view

Parameters

all: Clears the static and dynamic neighbor information on all interfaces.

dynamic: Clears the dynamic neighbor information on all interfaces.

interface interface-type interface-number: Clears all neighbor information of a specified interface.

static: Clears the static neighbor information on all interfaces.

Description

Use the reset ipv6 neighbors command to clear IPv6 neighbor information.

You can use the display ipv6 neighbors command to display the current IPv6 neighbor information.

Examples

# Clear all neighbor information on all interfaces.

<Sysname> reset ipv6 neighbors all

# Clear dynamic neighbor information on all interfaces.

<Sysname> reset ipv6 neighbors dynamic

# Clear all neighbor information on VLAN-interface 1.

<Sysname> reset ipv6 neighbors interface Vlan-interface 1

reset ipv6 statistics

Syntax

reset ipv6 statistics

View

User view

Parameters

None

Description

Use the reset ipv6 statistics command to clear the statistics of IPv6 and ICMPv6 packets.

You can use the display ipv6 statistics command to display the statistics of IPv6 and ICMPv6 packets.

Examples

# Clear the statistics of IPv6 packets.

<Sysname> reset ipv6 statistics

reset tcp ipv6 statistics

Syntax

reset tcp ipv6 statistics

View

User view

Parameters

None

Description

Use the reset tcp ipv6 statistics command to clear the statistics of all IPv6 TCP packets.

You can use the display tcp ipv6 statistics command to display the statistics of IPv6 TCP packets.

Examples

# Clear the statistics of all IPv6 TCP packets.

<Sysname> reset tcp ipv6 statistics

reset udp ipv6 statistics

Syntax

reset udp ipv6 statistics

View

User view

Parameters

None

Description

Use the reset udp ipv6 statistics command to clear the statistics of all IPv6 UDP packets.

You can use the display udp ipv6 statistics command to display the statistics of IPv6 UDP packets.

Examples

# Clear the statistics of all IPv6 UDP packets.

<Sysname> reset udp ipv6 statistics

tcp ipv6 timer fin-timeout

Syntax

tcp ipv6 timer fin-timeout wait-time

undo tcp ipv6 timer fin-timeout

View

System view

Parameters

wait-time: Length of the finwait timer of IPv6 TCP packets in seconds, in the range of 76 to 3,600.

Description

Use the tcp ipv6 timer fin-timeout command to set the finwait timer of IPv6 TCP packets

Use the undo tcp ipv6 timer fin-timeout command to restore the finwait timer length to the default.

By default, the length of the finwait timer is 675 seconds.

Examples

# Set the finwait timer length of IPv6 TCP packets to 800 seconds.

<Sysname> system-view

[Sysname] tcp ipv6 timer fin-timeout 800

tcp ipv6 timer syn-timeout

Syntax

tcp ipv6 timer syn-timeout wait-time

undo tcp ipv6 timer syn-timeout

View

System view

Parameters

wait-time: Length of the synwait timer of IPv6 TCP packets in seconds, in the range of 2 to 600.

Description

Use the tcp ipv6 timer syn-timeout command to set the synwait timer of IPv6 TCP packets

Use the undo tcp ipv6 timer syn-timeout command to restore the synwait timer length to the default.

By default, the length of the synwait timer of IPv6 TCP packets is 75 seconds.

Examples

# Set the synwait timer length of IPv6 TCP packets to 800 seconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] tcp ipv6 timer syn-timeout 800

tcp ipv6 window

Syntax

tcp ipv6 window size

undo tcp ipv6 window

View

System view

Parameters

size: size of IPv6 TCP receiving/sending buffer in KB (kilobyte), in the range of 1 to 32.

Description

Use the tcp ipv6 window command to set the size of IPv6 TCP receiving/sending buffer.

Use the undo tcp ipv6 window command to restore the size of IPv6 TCP receiving/sending buffer to the default.

By default, the size of the IPv6 TCP packet buffer is 8 KB.

Examples

# Set the size of IPv6 TCP receiving/sending buffer to 4 KB.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] tcp ipv6 window 4

 


IPv6 Application Configuration Commands

ping ipv6

Syntax

ping ipv6 [ -a source-ipv6-address | -c count | -m interval | -s packet-size | -t timeout ]* remote-system [ -i interface-type interface-number ]

View

Any view

Parameters

-a source-ipv6-address: Specifies source IPv6 address.

-c count: Specifies the number of packets sent for requesting ICMPv6 echo, ranging from 1 to 4294967295, with the default of 5.

-m interval: Specifies the time intervals in milliseconds to send packets for ICMPv6 echo, ranging from 1 to 65,535, with the default of 200 milliseconds.

l          If a response from the destination is received within the timeout time, the interval to send the next ECHO-REQUEST equals to the actual response period plus the value of interval.

l          If no response from the destination is received within the timeout time, the interval to send the next ECHO-REQUEST equals to the timeout value plus the value of interval.

-s packet-size: Specifies the size in bytes of packets sent for requesting ICMPv6 echo, ranging from 20 to 8,100, with the default of 56 bytes.

-t timeout: Specifies the timeout in milliseconds of receiving ICMPv6 echoes, ranging from 0 to 65,535, with the default of 2,000 milliseconds.

remote-system: IPv6 address or host name (a string a 1 to 46 characters) of the destination device.

-i interface-type interface-number: Specifies the type and number of an outgoing interface. This argument takes effect only when the destination address is a link-local address and the specified outgoing interface has a link-local address.

Description

Use the ping ipv6 command to test whether the destination is accessible.

The following information will be output:

l          A reply to each ICMPv6 echo request. If no ICMPv6 reply is received within the timeout time, “Request time out” is displayed; otherwise, the number of data bytes of each reply, packet sequence number, TTL, and round-trip response time are displayed.

l          Statistics, including the numbers of sent packets, received packets, packet loss percentage, and the minimum/average/maximum response time.

After you execute the ping ipv6 command, you can press Ctrl+C to terminate the ping operation.

Examples

# Test whether destination 2001::1 is accessible.

<Sysname> ping ipv6 2001::1

  PING 2001::1 : 56  data bytes, press CTRL_C to break

    Reply from 2001::1

    bytes=56 Sequence=1 hop limit=64  time = 20 ms

    Reply from 2001::1

    bytes=56 Sequence=2 hop limit=64  time = 0 ms

    Reply from 2001::1

    bytes=56 Sequence=3 hop limit=64  time = 0 ms

    Reply from 2001::1

    bytes=56 Sequence=4 hop limit=64  time = 0 ms

    Reply from 2001::1

    bytes=56 Sequence=5 hop limit=64  time = 0 ms

 

  --- 2001::1 ping statistics ---

    5 packet(s) transmitted

    5 packet(s) received

    0.00% packet loss

    round-trip min/avg/max = 0/4/20 ms

Table 2-1 Description on the fields of the ping ipv6 command

Field

Description

PING 2001::1

Verify whether the device at 2001::1 is reachable

56  data bytes

Number of bytes in the ICMPv6 echo request

press CTRL_C to break

Press Ctrl + C to terminate the ping operation after the ping ipv6 command is executed.

Reply from 2001::1

An ICMPv6 reply message is received from the device at 2001::1.

If no ICMPv6 reply is received within the timeout time, “Request time out” is displayed.

bytes=

Number of data bytes in the ICMPv6 reply message

Sequence=

Packet sequence number

hop limit=

TTL in the ICMP reply message, similar to the TTL in the output information of IPv4 ping operations.

time =

Round-trip response time

--- 2001::1 ping statistics ---

Statistics obtained by pinging the IPv6 address 2001::1

5 packet(s) transmitted

Number of sent packets

5 packet(s) received

Number of received packets

0.00% packet loss

Packet loss percentage

round-trip min/avg/max = 0/4/20 ms

Minimum/average/maximum response time, in milliseconds.

 

telnet ipv6

Syntax

telnet ipv6 remote-system [ -i interface-type interface-number ] [ port-number ]

View

User view

Parameters

remote-system: IPv6 address or host name (a string a 1 to 46 characters) of the destination device.

-i interface-type interface-number: Specifies the type and number of an outgoing interface. This argument takes effect only when the destination address is a link-local address and the specified outgoing interface has a link-local address.

port-number: Specifies the port number linked with a Telnet server, ranging from 0 to 65535, with the default of 23.

Description

Use the telnet ipv6 command to log onto another device for remote management from the local device. You can break Telnet logging-in by entering <Ctrl+K>.

Examples

# Connect to a remote Telnet server with IPv6 address of 3001::1.

<Sysname> telnet ipv6 3001::1

Trying 3001::1 ...

Press CTRL+K to abort

Connected to 3001::1 ...

****************************************************************************

*  Copyright(c) 2004-2008 Hangzhou H3C Tech. Co., Ltd. All rights reserved.*

*  Without the owner's prior written consent,                              *

*  no decompiling or reverse-engineering shall be allowed.                 *

****************************************************************************

 

<Sysname>

# Telnet to a remote Telnet server with IPv6 address of 2003::5. If the connection fails, “Can't connect to the remote host!” is displayed.

<Sysname> telnet ipv6 2003::5

Trying 2003::5 ...

Press CTRL+K to abort

Can't connect to the remote host!

tftp ipv6

Syntax

tftp ipv6 remote-system [ -i interface-type interface-number ] { get | put } source-filename [ destination-filename ]

View

User view

Parameters

remote-system: IPv6 address or host name (a string a 1 to 46 characters) of the destination device.

-i interface-type interface-number: Specifies the type and number of an interface. This argument takes effect only when the address of the TFTP server is a link-local address and the specified outgoing interface has a link-local address.

get: Specifies to download a file.

put: Specifies to upload a file.

source-filename: Specifies the name of a source file with a string of 1 to 64 letters.

destination-filename: Specifies the name of a destination file with a string of 1 to 64 letters. If no such parameters are specified, then the destination file’s name will be the same as the source file’s.

Description

Use the tftp ipv6 command to perform the following operations:

l          Download a file: Download a specified source file from TFTP server to local.

l          Upload a file: Upload a specified source file from local to TFTP server.

Examples

# Download a file from TFTP server.

<Sysname> tftp ipv6 fe80::250:daff:fe91:e058 -i Vlan-interface 300 get filetoget

  .

  File will be transferred in binary mode

  Downloading file from remote tftp server, please wait.....  received: 4469 bytes in 1.243 seconds.

tracert ipv6

Syntax

tracert ipv6 [ -f first-ttl | -m max-ttl | -p port | -q packet-num | -w timeout ]* remote-system

View

Any view

Parameters

-f first-ttl: Specifies the first TTL, that is, the allowed number of hops for the first packet. Ranges from 1 to 255, defaults to 1, and must be less than the maximum TTL.

-m max-ttl: Specifies the maximum TTL, that is, the maximum allowed number of hops for a packet. The value ranges from 1 to 255, defaults to 30. It must be greater than the first TTL.

-p port: Specifies the port number of the destination UDP, ranging from 1 to 65535, with the default of 33434.

-q packet-num: Specifies the maximum number of packets sent to a hop, ranging from 1 to 65535, with the default of 3.

-w timeout: Specifies the timeout in milliseconds of waiting ICMPv6 echoes, ranging from 1 to 65,535, with the default of 5,000 milliseconds.

remote-system: IPv6 address or host name (a string a 1 to 46 characters) of the destination device.

Description

Use the tracert ipv6 command to trace the route of the IPv6 packets from source to destination.

After using the ping command to detect a network problem, you can use the tracert command to locate the failed network node.

Executing the tracert command displays the IP addresses of all the Layer 3 forwarding devices which forward the packets to the destination on the path; if a device times out, “*  *  *” is displayed.

You can press Ctrl + C to terminate the tracert operation after the tracert ipv6 command is executed.

Examples

# Trace the route of the IPv6 packets from source to destination 3002::1.

<Sysname> tracert ipv6 3002::1

 traceroute to 3002::1  30 hops max,60 bytes packet

 1 3003::1 30 ms  0 ms  0 ms

 2 3002::1 10 ms 10 ms 0 ms

 3  *  *  *

Table 2-2 Description on the fields of the tracert ipv6 command

Field

Description

traceroute to 3002::1

Traceroute the device at 3002::1 to view the passed route

30 hops max

Maximum hops, which can be configured using the -m argument.

60 bytes packet

Number of bytes in a probe packet

press CTRL_C to break

Press Ctrl + C to terminate the tracert operation after the tracert ipv6 command is executed.

1 3003::1 30 ms  0 ms  0 ms

Probe result for sending packets with TTL 1, including IPv6 address of the device and round-trip response times of three probe packets.

The number of probe packets sent each time can be configured using the -q argument.

3  *  *  *

The device three hops away has no response.

 

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