acl6 acl6-number: Displays the IPv6 FIB entries permitted by a specified ACL. The ACL number is in the range of 2000 to 2999. If the specified ACL does not exist, all IPv6 FIB entries are displayed.

ipv6-prefix ipv6-prefix-name: Displays the IPv6 FIB entries matching a specified prefix list. The ipv6-prefix-name argument is a case-sensitive string of 1 to 19 characters. If the specified prefix list does not exist, all IPv6 FIB entries are displayed.

|: 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.

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 fib to display IPv6 FIB entries. If no argument is specified, all IPv6 FIB entries will be displayed.

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

Examples

# Display all IPv6 FIB entries.

<Sysname> display ipv6 fib

FIB Table:

Total number of Routes : 1

Flag:

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

Destination: ::1 PrefixLength : 128

NextHop : ::1 Flag : HU

Label : NULL Token : 0

Interface : InLoopBack0

Table 1 Command output

Field	Description
Total number of Routes	Total number of routes in the FIB
Destination	Destination address
PrefixLength	Prefix length of the destination address
NextHop	Next hop
Flag	Route flag: · U—Usable route · G—Gateway route · H—Host route · B—Black hole route · D—Dynamic route · S—Static route
Label	Label
Token	LSP index number
Interface	Outgoing interface

display ipv6 fib ipv6-address

Syntax

display ipv6 fib ipv6-address [ prefix-length ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

ipv6-address: Destination IPv6 address.

prefix-length: Prefix length of the destination IPv6 address, in the range of 0 to 128.

|: 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.

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 fib ipv6-address to display the IPv6 FIB entry of the specified destination IPv6 address.

Note the following:

· Without the prefix-length argument specified, this command displays the matching IPv6 FIB entry with the longest prefix.

· With the prefix-length argument specified, this command displays the IPv6 FIB entry exactly matching the specified destination IPv6 address and prefix length.

Examples

# Display the matching IPv6 FIB entry with the longest prefix.

<Sysname> display ipv6 fib ::1

Flag:

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

Destination: ::1 PrefixLength : 128

NextHop : ::1 Flag : HU

Label : NULL Token : 0

Interface : InLoopBack0

Table 2 Command output

Field	Description
Total number of Routes	Total number of routes in the FIB
Destination	Destination address
PrefixLength	Prefix length of the destination address
NextHop	Next hop
Flag	Route flag: · U—Usable route · G—Gateway route · H—Host route · B—Black hole route · D—Dynamic route · S—Static route
Label	Label
Token	LSP index number
Interface	Outgoing interface

display ipv6 interface

Syntax

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

View

Any view

Default level

1: Monitor level

Parameters

interface-type: Interface type.

interface-number: Interface number.

verbose: Displays the detailed IPv6 information of 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.

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 the IPv6 information of an interface.

If interface-type interface-number is not specified, the IPv6 information of all interfaces is displayed; if only interface-type is specified, the IPv6 information of the interfaces of the specified type is displayed; if interface-type interface-number is specified, the IPv6 information of the specified interface is displayed. If the verbose keyword is also specified, the detailed IPv6 information of the interface is displayed.

Examples

# Display the IPv6 information of VLAN-interface 2.

<Sysname> display ipv6 interface vlan-interface 2 verbose

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 3 Command output

Field	Description
Vlan-interface2 current state	Physical state of the interface: · Administratively DOWN—Indicates that the VLAN interface is administratively down. The interface is shut down by using the shutdown command. · DOWN—Indicates that 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—Indicates that the administrative and physical states of the VLAN interface are both up.
Line protocol current state	Link layer protocol state of the interface: · DOWN—Indicates that the link layer protocol state of the VLAN interface is down. · UP—Indicates that 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 address(es) 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)	Address(es) of multicast group(s) 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 PMTU
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 the brief IPv6 information of all interfaces.

<Sysname> display ipv6 interface

*down: administratively down

(s): spoofing

Interface Physical Protocol IPv6 Address

Vlan-interface1 down down Unassigned

Vlan-interface2 up up 2001::1

Vlan-interface100 up down Unassigned

Table 4 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—Indicates that the VLAN interface is administratively down. The interface is shut down using the shutdown command. · down—Indicates that 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—Indicates that the administrative and physical states of the VLAN interface are both up.
Protocol	Link layer protocol state of the interface: · down—Indicates that the network layer protocol state of the VLAN interface is down. · up—Indicates that 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.

display ipv6 neighbors

Syntax

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

View

Any view

Default level

1: Monitor level

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 on the public network and all private networks.

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 whose ID ranges from 1 to 4094.

|: 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.

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 neighbors 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

# Display all neighbor information.

<Sysname> display ipv6 neighbors all

Type: S-Static D-Dynamic

IPv6 Address Link-layer VID Interface State T Age

FE80::200:5EFF:FE32:B800 0000-5e32-b800 N/A GE1/0/1 REACH S -

Table 5 Command output

Field	Description
IPv6 Address	IPv6 address of a neighbor
Link-layer	Link layer address (MAC address) of a neighbor
VID	VLAN to which the interface connected with a neighbor belongs
Interface	Interface connected with a neighbor
State	State of a neighbor: · INCMP—The address is being resolved. The link layer address of the neighbor is unknown. · REACH—The neighbor is reachable. · STALE—The reachability of the neighbor is unknown. The device will not verify the reachability any longer unless data is sent to the neighbor. · DELAY—The reachability of the neighbor is unknown. The device sends an NS message after a delay. · PROBE—The reachability of the neighbor is unknown. The device sends an NS message to verify the reachability of the neighbor.
Type	Type of neighbor information, including static configuration (represented by S) and dynamic acquisition (represented by D).
Age	For a static entry, a hyphen (-) is displayed. For a dynamic entry, the reachable time (in seconds) elapsed is displayed, and if it is never reachable, a number sign (#) is displayed (for a neighbor acquired dynamically).

display ipv6 neighbors count

Syntax

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

View

Any view

Default level

1: Monitor level

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 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 whose ID ranges from 1 to 4094.

|: 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.

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 neighbors count 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): 2

display ipv6 pathmtu

Syntax

display ipv6 pathmtu { ipv6-address | all | dynamic | static } [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

ipv6-address: Destination IPv6 address for which the PMTU information is to be displayed.

all: Displays all PMTU information on the public network.

dynamic: Displays all dynamic PMTU information.

static: Displays all static PMTU information.

|: 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.

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 pathmtu to display the IPv6 PMTU information.

Examples

# Display all PMTU information.

<Sysname> display ipv6 pathmtu all

IPv6 Destination Address ZoneID PathMTU Age Type

fe80::12 0 1300 40 Dynamic

2222::3 0 1280 -- Static

Table 6 Command output

Field	Description
IPv6 Destination Address	Destination IPv6 address
ZoneID	VPN index. If the information is for the public network, this field displays 0.
PathMTU	Path MTU (PMTU) value on the network path to an IPv6 address
Age	Time for a PMTU to live. For a static PMTU, two consecutive hyphens (--) are displayed.
Type	Indicates that the PMTU is dynamically negotiated or statically configured.

display ipv6 socket

Syntax

display ipv6 socket [ socktype socket-type ] [ task-id socket-id ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

socktype socket-type: Displays the socket information of this type. The socket type is in the range of 1 to 3. The value "1" represents a TCP socket, "2" a UDP socket, and "3" a raw socket.

task-id: Displays the socket information of the task. The task ID is in the range of 1 to 100.

socket-id: Displays the information of the socket. The socket ID is in the range of 0 to 3072.

|: 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.

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 socket to display socket information.

With no parameter 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 the information of all sockets.

<Sysname> display ipv6 socket

SOCK_STREAM:

Task = VTYD(14), socketid = 4, Proto = 6,

LA = ::->22, FA = ::->0,

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

socket option = SO_ACCEPTCONN SO_REUSEPORT SO_SENDVPNID,

socket state = SS_PRIV SS_ASYNC

Task = VTYD(14), socketid = 3, Proto = 6,

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

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

socket option = SO_ACCEPTCONN SO_REUSEPORT SO_SENDVPNID,

socket state = SS_PRIV SS_ASYNC

SOCK_DGRAM:

Task = AGNT(51), socketid = 2, Proto = 17,

LA = ::->161, FA = ::->0,

sndbuf = 9216, rcvbuf = 42080, sb_cc = 0, rb_cc = 0,

socket option = SO_REUSEPORT,

socket state = SS_PRIV SS_NBIO SS_ASYNC

Task = TRAP(52), socketid = 2, Proto = 17,

LA = ::->1024, FA = ::->0,

sndbuf = 9216, rcvbuf = 42080, sb_cc = 0, rb_cc = 0,

socket option =,

socket state = SS_PRIV

SOCK_RAW:

Task = ROUT(86), socketid = 5, Proto = 89,

LA = ::, FA = ::,

sndbuf = 262144, rcvbuf = 262144, sb_cc = 0, rb_cc = 0,

socket option = SO_REUSEADDR,

socket state = SS_PRIV SS_ASYNC

Table 7 Command output

Field	Description
SOCK_STREAM	TCP socket
SOCK_DGRAM	UDP socket
SOCK_RAW	Raw IP socket
Task	Task name and ID of the created socket
socketid	ID assigned by the kernel to the created socket
Proto	Protocol type, for example, 6 indicates TCP and 17 indicates UDP.
LA	Local address and local port number
FA	Remote address and remote port number
sndbuf	Size of the send buffer
rcvbuf	Size of the receive buffer
sb_cc	Number of bytes sent by the send buffer
rb_cc	Number of bytes received by the receive buffer
socket option	Socket option set by the application: · SO_ACCEPTCONN—Detects connection request at the server end. · SO_REUSEADDR—Allows for reuse of a local address. · SO_REUSEPORT—Allows for reuse of a local port. · SO_SENDVPNID—Enables sending of the VPN ID.
socket state	State of the socket

display ipv6 statistics

Syntax

display ipv6 statistics [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

|: 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.

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 statistics 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

# Display the statistics of IPv6 packets and ICMPv6 packets.

<Sysname> display ipv6 statistics

IPv6 Protocol:

Sent packets:

Total: 0

Local sent out: 0 forwarded: 0

raw packets: 0 discarded: 0

routing failed: 0 fragments: 0

fragments failed: 0

Received packets:

Total: 0

local host: 0 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: 0

unreached: 0 too big: 0

hopcount exceeded: 0 reassembly timeout: 0

parameter problem: 0

echo request: 0 echo replied: 0

neighbor solicit: 0 neighbor advert: 0

router solicit: 0 router advert: 0

redirected: 0

Send failed:

ratelimited: 0 other errors: 0

Received packets:

Total: 0

checksum error: 0 too short: 0

bad code: 0

unreached: 0 too big: 0

hopcount exceeded: 0 reassembly timeout: 0

parameter problem: 0 unknown error type: 0

echo request: 0 echo replied: 0

neighbor solicit: 0 neighbor advert: 0

router solicit: 0 router advert: 0

redirected: 0 router renumbering: 0

unknown info type: 0

Deliver failed:

bad length: 0 ratelimited: 0

Table 8 Command output

Field	Description
IPv6 Protocol:	Statistics of IPv6 packets
Sent packets: Total: 0 Local sent out: 0 forwarded: 0 raw packets: 0 discarded: 0 routing failed: 0 fragments: 0 fragments failed: 0	Statistics of sent IPv6 packets: · Total number of packets sent and forwarded locally · Number of packets sent locally · Number of forwarded packets · Number of packets sent via raw socket · Number of discarded packets · Number of packets failing to be routed · Number of sent fragment packets · Number of fragments failing to be sent
Received packets: Total: 0 local host: 0 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: · Total number of received packets · Number of packets received locally · Number of packets exceeding the hop limit · Number of packets in an incorrect format · Number of packets with incorrect options · Number of packets with incorrect protocol · Number of received fragment packets · Number of reassembled packets · Number of packets failing to be reassembled · Number of packets whose reassembly times out
ICMPv6 protocol:	Statistics of ICMPv6 packets
Sent packets: Total: 0 unreached: 0 too big: 0 hopcount exceeded: 0 reassembly timeout: 0 parameter problem: 0 echo request: 0 echo replied: 0 neighbor solicit: 0 neighbor advert: 0 router solicit: 0 router advert 0 redirected: 0 Send failed: ratelimited: 0 other errors: 0	Statistics of sent ICMPv6 packets: · Total number of sent packets · Number of Destination Unreachable packets · Number of Packet Too Big packets · Number of Hop Limit Exceeded packets · Number of Fragment Reassembly Time Exceeded packets · Number of Parameter Problem packets · Number of Echo Request packets · Number of Echo Reply packets · Number of neighbor solicitation packets · Number of neighbor advertisement packets · Number of router solicitation packets · Number of router advertisement packets · Number of Redirect packets · Number of packets failing to be sent due to rate limitation · Number of packets with other errors
Received packets: Total: 0 checksum error: 0 too short: 0 bad code: 0 unreached: 0 too big: 0 hopcount exceeded: 0 reassembly timeout: 0 parameter problem: 0 unknown error type: 0 echo request: 0 echo replied: 0 neighbor solicit: 0 neighbor advert: 0 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: · Total number of received packets · Number of packets with checksum errors · Number of too small packets · Number of packets with error codes · Number of Destination Unreachable packets · Number of Packet Too Big packets · Number of Hop Limit Exceeded packets · Number of Fragment Reassembly Times Exceeded packets · Number of Parameter Problem packets · Number of packets with unknown errors · Number of Echo Request packets · Number of Echo Reply packets · Number of neighbor solicitation messages · Number of neighbor advertisement packets · Number of router solicitation packets · Number of router advertisement packets · Number of Redirect packets · Number of packets recounted by the router · Number of unknown type of packets · Number of packets with a incorrect size · Number of packets failing to be received due to rate limitation

Field

Description

IPv6 Protocol:

Statistics of IPv6 packets

Sent packets:

Total: 0

Local sent out: 0 forwarded: 0

raw packets: 0 discarded: 0

routing failed: 0 fragments: 0

fragments failed: 0

Statistics of sent IPv6 packets:

· Total number of packets sent and forwarded locally

· Number of packets sent locally

· Number of forwarded packets

· Number of packets sent via raw socket

· Number of discarded packets

· Number of packets failing to be routed

· Number of sent fragment packets

· Number of fragments failing to be sent

Received packets:

Total: 0

local host: 0 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:

· Total number of received packets

· Number of packets received locally

· Number of packets exceeding the hop limit

· Number of packets in an incorrect format

· Number of packets with incorrect options

· Number of packets with incorrect protocol

· Number of received fragment packets

· Number of reassembled packets

· Number of packets failing to be reassembled

· Number of packets whose reassembly times out

ICMPv6 protocol:

Statistics of ICMPv6 packets

Sent packets:

Total: 0

unreached: 0 too big: 0

hopcount exceeded: 0 reassembly timeout: 0

parameter problem: 0

echo request: 0 echo replied: 0

neighbor solicit: 0 neighbor advert: 0

router solicit: 0 router advert 0

redirected: 0

Send failed:

ratelimited: 0 other errors: 0

Statistics of sent ICMPv6 packets:

· Total number of sent packets

· Number of Destination Unreachable packets

· Number of Packet Too Big packets

· Number of Hop Limit Exceeded packets

· Number of Fragment Reassembly Time Exceeded packets

· Number of Parameter Problem packets

· Number of Echo Request packets

· Number of Echo Reply packets

· Number of neighbor solicitation packets

· Number of neighbor advertisement packets

· Number of router solicitation packets

· Number of router advertisement packets

· Number of Redirect packets

· Number of packets failing to be sent due to rate limitation

· Number of packets with other errors

Received packets:

Total: 0

checksum error: 0 too short: 0

bad code: 0

unreached: 0 too big: 0

hopcount exceeded: 0 reassembly timeout: 0

parameter problem: 0 unknown error type: 0

echo request: 0 echo replied: 0

neighbor solicit: 0 neighbor advert: 0

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:

· Total number of received packets

· Number of packets with checksum errors

· Number of too small packets

· Number of packets with error codes

· Number of Destination Unreachable packets

· Number of Packet Too Big packets

· Number of Hop Limit Exceeded packets

· Number of Fragment Reassembly Times Exceeded packets

· Number of Parameter Problem packets

· Number of packets with unknown errors

· Number of Echo Request packets

· Number of Echo Reply packets

· Number of neighbor solicitation messages

· Number of neighbor advertisement packets

· Number of router solicitation packets

· Number of router advertisement packets

· Number of Redirect packets

· Number of packets recounted by the router

· Number of unknown type of packets

· Number of packets with a incorrect size

· Number of packets failing to be received due to rate limitation

display tcp ipv6 statistics

Syntax

display tcp ipv6 statistics [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

|: 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.

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 tcp ipv6 statistics to display IPv6 TCP connection statistics.

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

Examples

# Display the statistics of IPv6 TCP connections.

<Sysname> display tcp ipv6 statistics

Received packets:

Total: 0

packets in sequence: 0 (0 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: 0 (0 bytes)

packets with data after window: 0 (0 bytes)

packets after close: 0

ACK packets: 0 (0 bytes)

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

Sent packets:

Total: 0

urgent packets: 0

control packets: 0 (including 0 RST)

window probe packets: 0, window update packets: 0

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

ACK only packets: 0 (0 delayed)

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

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

Initiated connections: 0, accepted connections: 0, established connections: 0

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

Packets dropped with MD5 authentication: 0

Packets permitted with MD5 authentication: 0

Table 9 Command output

Field	Description
Received packets: Total: 0 packets in sequence: 0 (0 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: 0 (0 bytes) packets with data after window: 0 (0 bytes) packets after close: 0 ACK packets: 0 (0 bytes) duplicate ACK packets: 0 too much ACK packets: 0	Statistics of received packets: · Total number of received packets · Number of packets received in sequence · Number of window probe packets · Number of window size update packets · Number of packets with checksum errors · Number of packets with offset errors · Number of packets whose total length is less than specified by the packet header · Number of duplicate packets · Number of partially duplicate packets · Number of out-of-order packets · Number of packets exceeding the size of the receiving window · Number of packets received after the connection is closed · Number of ACK packets · Number of duplicate ACK packets · Number of excessive ACK packets
Sent packets: Total: 0 urgent packets: 0 control packets: 0 (including 0 RST) window probe packets: 0 window update packets: 0 data packets: 0 (0 bytes) data packets retransmitted: 0 (0 bytes) ACK only packets: 0 (0 delayed)	Statistics of sent packets: · Total number of packets · Number of packets containing an urgent indicator · Number of control packets · Number of window probe packets · Number of window update packets · Number of data packets · Number of retransmitted packets · Number of ACK 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 SYN is received from the peer)
initiated dropped	Number of initiated but dropped connections (before SYN is received from the peer)
Packets dropped with MD5 authentication	Number of packets that fail the MD5 authentication and are dropped
Packets permitted with MD5 authentication	Number of packets that pass the MD5 authentication

display tcp ipv6 status

Syntax

display tcp ipv6 status [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

|: 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.

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

Examples

# Display the IPv6 TCP connection status.

<Sysname> display tcp ipv6 status

*: TCP6 MD5 Connection

TCP6CB Local Address Foreign Address State

045d8074 ::->21 ::->0 Listening

Table 10 Command output

Field	Description
*: TCP6 MD5 Connection	The asterisk (*) indicates that the TCP6 connection is secured with MD5 authentication.
TCP6CB	IPv6 TCP control block address (hexadecimal)
Local Address	Local IPv6 address
Foreign Address	Remote IPv6 address
State	IPv6 TCP connection status: · 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 [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

|: 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.

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

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

Examples

# Display the statistics information of IPv6 UDP packets.

<Sysname> display udp ipv6 statistics

Received packets:

Total: 0

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: 0

Table 11 Command output

Field	Description
Total	Total number of received/sent packets
checksum error	Total number of packets with a checksum error
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
broadcast/multicast(no socket on port)	Total number of received broadcast/multicast packets without any socket
not delivered, input socket full	Number of packets not handled because of the receive buffer being full
input packet missing pcb cache	Number of packets failing to match the protocol control block (PCB) cache

ipv6

Syntax

ipv6

undo ipv6

View

System view

Default level

2: System level

Parameters

None

Description

Use ipv6 to enable IPv6.

Use undo ipv6 to disable IPv6.

By default, IPv6 is disabled.

Examples

# Enable IPv6.

<Sysname> system-view

[Sysname] ipv6

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

Default level

2: System level

Parameters

ipv6-address: IPv6 address.

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

Description

Use ipv6 address to configure an IPv6 global unicast address for an interface.

Use undo ipv6 address to remove the IPv6 address from the interface.

By default, no global unicast address is configured for an interface.

Except the link-local address automatically obtained and the one generated through stateless autoconfiguration, all IPv6 addresses will be removed from the interface if you carry out the undo ipv6 address command without any parameter specified.

Examples

# Set the global IPv6 unicast address of VLAN-interface 100 to 2001::1 with prefix length 64.

Method I:

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address 2001::1/64

Method II:

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address 2001::1 64

ipv6 address anycast

Syntax

ipv6 address ipv6-address | prefix-length anycast

undo ipv6 address ipv6-address | prefix-length anycast

View

Interface view

Default level

2: System level

Parameters

ipv6-address/prefix-length: Specifies an IPv6 anycast address and its prefix length. The prefix length ranges 1 to 128.

Description

Use ipv6 address anycast to configure an IPv6 anycast address for an interface.

Use undo ipv6 address anycast to remove the IPv6 anycast address from the interface.

By default, no IPv6 anycast address is configured for an interface.

Examples

# Set the IPv6 anycast address of VLAN-interface 100 to 2001::1 with prefix length 64.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address 2001::1/64 anycast

ipv6 address auto link-local

Syntax

ipv6 address auto link-local

undo ipv6 address auto link-local

View

Interface view

Default level

2: System level

Parameters

None

Description

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

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

By default, no link-local address is configured on an interface, and a link-local address will be automatically generated after a global IPv6 unicast address is configured for the interface.

Note the following:

· After an IPv6 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.

· The undo ipv6 address auto link-local command can only remove the link-local addresses generated through the ipv6 address auto link-local command. After the undo ipv6 address auto link-local command is used on an interface that has an IPv6 global unicast address configured, the interface still has a link-local address. If the interface has no IPv6 global unicast address configured, it will have no link-local address.

· Manual assignment takes precedence over automatic generation. 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 more information about manually assignment of an IPv6 link-local address, see the ipv6 address link-local command.

Examples

# Configure VLAN-interface 100 to automatically generate a link-local address.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] 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

Interface view

Default level

2: System level

Parameters

ipv6-address/prefix-length: IPv6 address and IPv6 prefix. The ipv6-address and prefix-length arguments jointly specify the prefix of an EUI-64 IPv6 address.

Description

Use ipv6 address eui-64 to configure an EUI-64 IPv6 address for an interface.

Use undo ipv6 address eui-64 to remove the configured EUI-64 IPv6 address for the interface.

By default, no EUI-64 IPv6 address is configured for an interface.

An EUI-64 IPv6 address is generated based on the specified prefix and the automatically generated interface identifier and can be displayed by using the display ipv6 interface command.

You cannot specify the prefix length of an EUI-64 IPv6 address to be greater than 64.

Examples

# Configure an EUI-64 IPv6 address for VLAN-interface 100. The prefix length of the address is the same as that of 2001::1/64, and the interface ID is generated based on the MAC address of the device.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address 2001::1/64 eui-64

ipv6 address link-local

Syntax

ipv6 address ipv6-address link-local

undo ipv6 address ipv6-address link-local

View

Interface view

Default level

2: System level

Parameters

ipv6-address: IPv6 link-local address. The first 10 bits of an address must be 1111111010 (binary). The first group of hexadecimals in the address must be FE80 to FEBF.

Description

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

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

Manual assignment takes precedence over automatic generation. 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, see the ipv6 address auto link-local command.

Examples

# Configure a link-local address for VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 address fe80::1 link-local

ipv6 fib-loadbalance-type hash-based

Syntax

ipv6 fib-loadbalance-type hash-based

undo ipv6 fib-loadbalance-type hash-based

View

System view

Default level

2: System level

Parameters

None

Description

Use ipv6 fib-loadbalance-type hash-based to enable load sharing based on the HASH algorithm for packet forwarding.

Use undo ipv6 fib-loadbalance-type hash-based to restore the default.

By default, load sharing based on polling is adopted. ECMP routes are used in turn to forward packets.

Examples

# Enable load sharing based on the HASH algorithm for packet forwarding.

<Sysname> system-view

[Sysname] ipv6 fib-loadbalance-type hash-based

ipv6 hoplimit-expires enable

Syntax

ipv6 hoplimit-expires enable

undo ipv6 hoplimit-expires

View

System view

Default level

2: System level

Parameters

None

Description

Use ipv6 hoplimit-expires enable to enable the sending of ICMPv6 Time Exceeded packets.

Use the undo ipv6 hoplimit-expires command to disable the sending of ICMPv6 Time Exceeded packets.

By default, the sending of ICMPv6 Time Exceeded packets is enabled.

After you disable the sending of ICMPv6 Time Exceeded packets, the device will still send Fragment Reassembly Time Exceeded packets.

Examples

# Disable the sending of ICMPv6 Time Exceeded packets.

<Sysname> system-view

[Sysname] undo ipv6 hoplimit-expires

ipv6 icmp-error

Syntax

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

undo ipv6 icmp-error

View

System view

Default level

2: System level

Parameters

bucket bucket-size: Number of tokens in the token bucket, in the range of 1 to 200.

ratelimit interval: Update period of the token bucket in milliseconds, in the range of 0 to 2,147,483,647. The update period "0" indicates that the number of ICMPv6 error packets sent is not restricted.

Description

Use ipv6 icmp-error to configure the size and update period of the token bucket.

Use undo ipv6 icmp-error to restore the defaults.

By default, the size is 10 and the update period is 100 milliseconds. At most 10 ICMPv6 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.

<Sysname> system-view

[Sysname] ipv6 icmp-error bucket 50 ratelimit 100

ipv6 icmpv6 multicast-echo-reply enable

Syntax

ipv6 icmpv6 multicast-echo-reply enable

undo ipv6 icmpv6 multicast-echo-reply

View

System view

Default level

2: System level

Parameters

None

Description

Use ipv6 icmpv6 multicast-echo-reply enable to enable replying to multicast echo requests.

Use the undo ipv6 icmpv6 multicast-echo-reply command to disable replying to multicast echo requests.

By default, the device is disabled from replying to multicast echo requests.

Examples

# Enable replying to multicast echo requests.

<Sysname> system-view

[Sysname] ipv6 icmpv6 multicast-echo-reply enable

ipv6 nd autoconfig managed-address-flag

Syntax

ipv6 nd autoconfig managed-address-flag

undo ipv6 nd autoconfig managed-address-flag

View

Interface view

Default level

2: System level

Parameters

None

Description

Use ipv6 nd autoconfig managed-address-flag to set the managed address configuration (M) flag to 1 so that the host can acquire an IPv6 address through stateful autoconfiguration (for example, from a DHCP server).

Use undo ipv6 nd autoconfig managed-address-flag to restore the default.

By default, the M flag is set to 0 so that the host can acquire an IPv6 address through stateless autoconfiguration.

Examples

# Configure the host to acquire an IPv6 address through stateful autoconfiguration.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd autoconfig managed-address-flag

ipv6 nd autoconfig other-flag

Syntax

ipv6 nd autoconfig other-flag

undo ipv6 nd autoconfig other-flag

View

Interface view

Default level

2: System level

Parameters

None

Description

Use ipv6 nd autoconfig other-flag to set the other stateful configuration flag (O) to 1 so that the host can acquire information other than IPv6 address through stateful autoconfiguration (for example, from a DHCP server).

Use undo ipv6 nd autoconfig other-flag to restore the default.

By default, the O flag is set to 0 so that the host can acquire other information through stateless autoconfiguration.

Examples

# Configure the host to acquire information other than IPv6 address through stateless autoconfiguration.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] undo ipv6 nd autoconfig other-flag

ipv6 nd dad attempts

Syntax

ipv6 nd dad attempts value

undo ipv6 nd dad attempts

View

Interface view

Default level

2: System level

Parameters

value: Number of attempts to send an NS message for DAD, in the range of 0 to 600. The default value is "1". When it is set to 0, DAD is disabled.

Description

Use ipv6 nd dad attempts to configure the number of attempts to send an NS message for DAD.

Use undo ipv6 nd dad attempts to restore the default.

By default, the number of attempts to send an NS message for DAD is 1.

Related commands: display ipv6 interface.

Examples

# Set the number of attempts to send an NS message for DAD to 20.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd dad attempts 20

ipv6 nd hop-limit

Syntax

ipv6 nd hop-limit value

undo ipv6 nd hop-limit

View

System view

Default level

2: System level

Parameters

value: Number of hops, in the range of 0 to 255. When it is set to 0, the Hop Limit field in RA messages sent by the device is 0. The number of hops is determined by the requesting device itself.

Description

Use ipv6 nd hop-limit to configure the hop limit advertised by the device.

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

By default, the hop limit advertised by the device is 64.

Examples

# Set the hop limit advertised by the device to 100.

<Sysname> system-view

[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

Interface view

Default level

2: System level

Parameters

value: Interval for retransmitting an NS message in milliseconds, in the range of 1,000 to 4,294,967,295.

Description

Use ipv6 nd ns retrans-timer to set the interval for retransmitting an NS message. The local interface retransmits an NS message at intervals of this value. Furthermore, the Retrans Timer field in RA messages sent by the local interface is equal to this value.

Use undo ipv6 nd ns retrans-timer to restore the default.

By default, the local interface sends NS messages at an interval of 1000 millisecond and the Retrans Timer field in the RA messages sent is 0, so that the interval for retransmitting an NS message is determined by the receiving device.

Related commands: display ipv6 interface.

Examples

# Specify VLAN-interface 100 to retransmit NS messages at intervals of 10,000 milliseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] 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

Interface view

Default level

2: System level

Parameters

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

Description

Use ipv6 nd nud reachable-time to configure the neighbor reachable time on an interface. This time value serves as not only the neighbor reachable time on the local interface, but also the value of the Reachable Time field in RA messages sent by the local interface.

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

By default, the neighbor reachable time on the local interface is 30,000 milliseconds and the value of the Reachable Time field in RA messages is 0, so that the reachable time is determined by the receiving device.

Related commands: display ipv6 interface.

Examples

# Set the neighbor reachable time on VLAN-interface 100 to 10,000 milliseconds.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd nud reachable-time 10000

ipv6 nd ra halt

Syntax

ipv6 nd ra halt

undo ipv6 nd ra halt

View

Interface view

Default level

2: System level

Parameters

None

Description

Use ipv6 nd ra halt to enable RA message suppression.

Use undo ipv6 nd ra halt to disable RA message suppression.

By default, RA messages are suppressed.

Examples

# Suppress RA messages on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd ra halt

ipv6 nd ra interval

Syntax

ipv6 nd ra interval max-interval-value min-interval-value

undo ipv6 nd ra interval

View

Interface view

Default level

2: System level

Parameters

max-interval-value: Maximum interval for advertising RA messages in seconds, in the range of 4 to 1,800.

min-interval-value: Minimum interval for advertising RA messages in seconds, in the range of 3 to 1,350.

Description

Use ipv6 nd ra interval to set the maximum and minimum intervals for advertising RA messages. The device advertises RA messages at intervals of a random value between the maximum interval and the minimum interval.

Use undo ipv6 nd ra interval to restore the default.

By default, the maximum interval between RA messages is 600 seconds, and the minimum interval is 200 seconds.

Note the following:

· The minimum interval should be three-fourths of the maximum interval or less.

· The maximum interval for sending RA messages should be less than or equal to the router lifetime in RA messages.

Examples

# Set the maximum interval for advertising RA messages to 1,000 seconds and the minimum interval to 700 seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd ra interval 1000 700

ipv6 nd ra no-advlinkmtu

Syntax

ipv6 nd ra no-advlinkmtu

undo ipv6 nd ra no-advlinkmtu

View

Interface view

Default level

2: System level

Parameters

None

Description

Use ipv6 nd ra no-advlinkmtu to turn off the MTU option in RA messages.

Use undo ipv6 nd ra no-advlinkmtu to restore the default.

By default, RA messages contain the MTU option.

Examples

# Turn off the MTU option in RA messages on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd ra no-advlinkmtu

ipv6 nd ra prefix

Syntax

ipv6 nd ra prefix { ipv6-prefix prefix-length | ipv6-prefix/prefix-length } valid-lifetime preferred-lifetime [ no-autoconfig | off-link ] *

undo ipv6 nd ra prefix { ipv6-prefix | ipv6-prefix/prefix-length }

View

Interface view

Default level

2: System level

Parameters

ipv6-prefix: IPv6 prefix.

prefix-length: Prefix length of the IPv6 address.

valid-lifetime: Valid lifetime of a prefix in seconds, in the range of 0 to 4,294,967,295.

preferred-lifetime: Preferred lifetime of a prefix used for stateless autoconfiguration in seconds, in the range of 0 to 4,294,967,295.

no-autoconfig: Specifies a prefix not to be used for stateless autoconfiguration. If this keyword is not provided, the prefix is used for stateless autoconfiguration.

off-link: Indicates that the address with the prefix is not directly reachable on the link. If this keyword is not provided, the address with the prefix is directly reachable on the link.

Description

Use ipv6 nd ra prefix to configure the prefix information in RA messages.

Use undo ipv6 nd ra prefix to remove the prefix information from RA messages.

By default, no prefix information is configured in RA messages and the IPv6 address of the interface sending RA messages is used as the prefix information with valid lifetime 2592000 seconds (that is, 30 days) and preferred lifetime 604800 seconds (that is, 7 days).

Examples

# Configure the prefix information for RA messages on VLAN-interface 100.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd ra prefix 2001:10::100/64 100 10

ipv6 nd ra router-lifetime

Syntax

ipv6 nd ra router-lifetime value

undo ipv6 nd ra router-lifetime

View

Interface view

Default level

2: System level

Parameters

value: Router lifetime in seconds, in the range of 0 to 9,000. When it is set to 0, the device does not serve as the default router.

Description

Use ipv6 nd ra router-lifetime to configure the router lifetime in RA messages.

Use undo ipv6 nd ra router-lifetime to restore the default.

By default, the router lifetime in RA messages is 1,800 seconds.

The router lifetime in RA messages should be greater than or equal to the advertising interval.

Examples

# Set the router lifetime in RA messages on VLAN-interface 100 to 1,000 seconds.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 nd ra router-lifetime 1000

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

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

View

System view

Default level

2: System level

Parameters

ipv6-address: IPv6 address of the static neighbor entry.

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

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

port-type port-number: Type and number of a Layer 2 port of the static neighbor entry.

interface interface-type interface-number: Type and number of a Layer 3 interface of the static neighbor entry.

Description

Use ipv6 neighbor to configure a static neighbor entry.

Use undo ipv6 neighbor to remove a static neighbor entry.

You can use a Layer 3 VLAN interface or a Layer 2 port in the VLAN to configure a static neighbor entry.

· If the first method is used, the neighbor entry is in the INCMP state. After the device obtains the corresponding Layer 2 port information, the neighbor entry will go into the REACH state.

· If the second method is used, the corresponding VLAN interface must exist and the port specified by port-type port-number must belong to the VLAN specified by vlan-id. After the static neighbor entry is configured, the device will relate the VLAN interface with the IPv6 address to identify the static neighbor entry uniquely and the entry will be in the REACH state.

To remove a static neighbor entry, you only need to specify the corresponding VLAN interface and the neighbor address.

Related commands: display ipv6 neighbors.

Examples

# Configure a static neighbor entry for Layer 2 port GigabitEthernet 1/0/1 of VLAN 100.

<Sysname> system-view

[Sysname] ipv6 neighbor 2000::1 fe-e0-89 100 gigabitethernet 1/0/1

ipv6 neighbors max-learning-num

Syntax

ipv6 neighbors max-learning-num number

undo ipv6 neighbors max-learning-num

View

Interface view

Default level

2: System level

Parameters

number: Maximum number of neighbors that can be dynamically learned by the interface, in the range of 1 to 1024. The default value is 1024.

Description

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

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

Examples

# Set the maximum number of neighbors that can be dynamically learned on VLAN-interface 100 to 10.

<Sysname> system-view

[Sysname] interface vlan-interface 100

[Sysname-Vlan-interface100] ipv6 neighbors max-learning-num 10

ipv6 pathmtu

Syntax

ipv6 pathmtu ipv6-address [ value ]

undo ipv6 pathmtu ipv6-address

View

System view

Default level

2: System level

Parameters

ipv6-address: IPv6 address.

value: PMTU of a specified IPv6 address in bytes. The default value is 1500.

Description

Use ipv6 pathmtu to configure a static PMTU for a specified IPv6 address.

Use undo ipv6 pathmtu to remove the PMTU configuration for a specified IPv6 address.

By default, no static PMTU is configured.

Examples

# Configure a static PMTU for a specified IPv6 address.

<Sysname> system-view

[Sysname] ipv6 pathmtu fe80::12 1300

ipv6 pathmtu age

Syntax

ipv6 pathmtu age age-time

undo ipv6 pathmtu age

View

System view

Default level

2: System level

Parameters

age-time: Aging time for PMTU in minutes, in the range of 10 to 100.

Description

Use ipv6 pathmtu age to configure the aging time for a dynamic PMTU.

Use undo ipv6 pathmtu age to restore the default.

By default, the aging time is 10 minutes.

The aging time is invalid for a static PMTU.

Related commands: display ipv6 pathmtu.

Examples

# Set the aging time for a dynamic PMTU to 40 minutes.

<Sysname> system-view

[Sysname] ipv6 pathmtu age 40

ipv6 unreachables enable

Syntax

ipv6 unreachables enable

undo ipv6 unreachables

View

System view

Default level

2: System level

Parameters

None

Description

Use ipv6 unreachables enable to enable sending of ICMPv6 destination unreachable packets.

Use the undo ipv6 unreachables command to disable sending of ICMPv6 destination unreachable packets.

By default, sending of ICMPv6 destination unreachable packets is disabled.

Examples

# Enable sending of ICMPv6 destination unreachable packets.

<Sysname> system-view

[Sysname] ipv6 unreachables enable

reset ipv6 neighbors

Syntax

reset ipv6 neighbors { all | dynamic | interface interface-type interface-number | static }

View

User view

Default level

2: System level

Parameters

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

dynamic: Clears dynamic neighbor information on all interfaces.

interface interface-type interface-number: Clears dynamic neighbor information on a specified interface.

static: Clears static neighbor information on all interfaces.

Description

Use reset ipv6 neighbors to clear IPv6 neighbor information.

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

Examples

# Clear neighbor information on all interfaces.

<Sysname> reset ipv6 neighbors all

# Clear dynamic neighbor information on all interfaces.

<Sysname> reset ipv6 neighbors dynamic

reset ipv6 pathmtu

Syntax

reset ipv6 pathmtu { all | static | dynamic }

View

User view

Default level

2: System level

Parameters

all: Clears all PMTUs.

static: Clears all static PMTUs.

dynamic: Clears all dynamic PMTUs.

Description

Use the reset ipv6 pathmtu the command to clear the PMTU information.

Examples

# Clear all PMTUs.

<Sysname> reset ipv6 pathmtu all

reset ipv6 statistics

Syntax

reset ipv6 statistics

View

User view

Default level

2: System level

Parameters

None

Description

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

<Sysname> reset ipv6 statistics

reset tcp ipv6 statistics

Syntax

reset tcp ipv6 statistics

View

User view

Default level

2: System level

Parameters

None

Description

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

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

Examples

# Clear the statistics of all IPv6 TCP connections.

<Sysname> reset tcp ipv6 statistics

reset udp ipv6 statistics

Syntax

reset udp ipv6 statistics

View

User view

Default level

2: System level

Parameters

None

Description

Use reset udp ipv6 statistics 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

Default level

2: System level

Parameters

wait-time: Length of the finwait timer for IPv6 TCP connections in seconds, in the range of 76 to 3600.

Description

Use tcp ipv6 timer fin-timeout to set the finwait timer for IPv6 TCP connections.

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

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

Examples

# Set the finwait timer length of IPv6 TCP connections 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

Default level

2: System level

Parameters

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

Description

Use tcp ipv6 timer syn-timeout to set the synwait timer for IPv6 TCP connections

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

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

Examples

# Set the synwait timer length of IPv6 TCP connections to 100 seconds.

<Sysname> system-view

[Sysname] tcp ipv6 timer syn-timeout 100

tcp ipv6 window

Syntax

tcp ipv6 window size

undo tcp ipv6 window

View

System view

Default level

2: System level

Parameters

size: Size of the IPv6 TCP send/receive buffer in KB (kilobyte), in the range of 1 to 32.

Description

Use tcp ipv6 window to set the size of the IPv6 TCP send/receive buffer.

Use undo tcp ipv6 window to restore the default.

By default, the size of the IPv6 TCP send/receive buffer is 8 KB.

Examples

# Set the size of the IPv6 TCP send/receive buffer to 4 KB.

<Sysname> system-view

[Sysname] tcp ipv6 window 4

04-Layer 3 Command Reference

ipv6 nd ra interval

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