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.
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
|
1.1.3 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
|
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.)
|
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 GE1/0/2 REACH S -
FE80::215:E9FF:FEAC:69B6 0015-e9ac-69b6
1 GE1/0/2 STALE D 22
FE80::20F:E2FF:FE00:2201 000f-e200-2201
1 GE1/0/2 STALE D 28
2008::3610 000f-e200-2201
1 GE1/0/2 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).
|
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
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).
|
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
|
