Syntax
dhcp enable
undo dhcp enable
View
System view
Parameter
None
Description
Use the dhcp enable command to
enable DHCP.
Use the undo dhcp enable command to
disable DHCP.
By default, DHCP is enabled.
You must first enable DHCP before
performing other DHCP-related configurations. This configuration is necessary
for both DHCP servers and DHCP relays.
Example
# Enable DHCP.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp enable
Syntax
VLAN interface view:
dhcp select global
undo dhcp select
System view:
dhcp select global
{ interface interface-type interface-number [ to interface-type
interface-number ] | all }
undo dhcp select { interface interface-type interface-number [ to interface-type
interface-number ] | all }
View
System view/VLAN interface view
Parameter
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s) to operate in global address
pool mode. The interface-type and interface-number arguments are
the type and number of an interface. The to keyword separates the start
and the end of an interface range.
all: Specifies all ports to operate in global address pool mode.
Description
Use the dhcp select global
command to configure the specified interface(s) or all interfaces to operate in
global DHCP address pool mode. Upon receiving a DHCP packet from a DHCP client
through an interface operating in global DHCP address pool mode, the DHCP
server chooses an IP address from a global DHCP address pool of the local DHCP
server and assigns the address to the DHCP client.
Use the undo dhcp select
command to restore the default DHCP packet processing mode.
By default, an interface operates in local
DHCP server global address pool mode.
Example
# Configure all interfaces to operate in
global DHCP address pool mode, so that when a DHCP packet is received from a
DHCP client through any interface, the DHCP server assigns an IP address in
local global DHCP address pools to the DHCP client.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp select global all
Syntax
VLAN interface view:
dhcp select interface
undo dhcp select
System view:
dhcp select interface
{ interface interface-type interface-number [ to interface-type
interface-number ] | all }
undo dhcp select { interface interface-type interface-number [ to interface-type
interface-number ] | all }
View
System view/VLAN interface view
Parameter
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s) to operate in interface
address pool mode.
all: Specifies all interfaces to operate in interface address pool mode.
Description
Use the dhcp select interface
command to configure the specified interface(s) to operate in DHCP interface
address pool mode. Upon receiving a DHCP packet from a DHCP client through an
interface operating in interface address pool mode, the DHCP server chooses an
IP address from the interface address pool of the local DHCP server and assigns
the address to the DHCP client.
Use the undo dhcp select
command to restore the default DHCP packet processing mode.
By default, an interface operates in local
DHCP server global address pool mode.
Example
# Configure all interfaces to operate in
interface address pool mode, so that when a DHCP packet is received from a DHCP
client through any interface, the DHCP server assigns an IP address in the
local interface address pool to the DHCP client.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp select interface all
Syntax
dhcp server detect
undo dhcp server detect
View
System view
Parameter
None
Description
Use the dhcp server detect command
to enable the unauthorized DHCP server detecting function.
Use the undo dhcp server detect
command to disable the unauthorized DHCP server detecting function.
By default, the unauthorized DHCP server
detecting function is disabled.
With the unauthorized DHCP server detecting
function enabled, a DHCP server tracks the information (such as the IP
addresses and interfaces) of DHCP servers to enable the administrator to detect
unauthorized DHCP servers in time and take proper measures.
Example
# Enable the unauthorized DHCP server
detecting function.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server detect
Syntax
VLAN interface view:
dhcp server dns-list ip-address&<1-8>
undo dhcp server dns-list { ip-address | all }
System view:
dhcp server dns-list ip-address&<1-8> { interface
interface-type interface-number [ to interface-type
interface-number ] | all }
undo dhcp server dns-list { ip-address | all } { interface interface-type
interface-number [ to interface-type interface-number ] | all
}
View
System view/VLAN interface view
Parameter
ip-address&<1-8>:
IP address of a DNS server. &<1-8> means you can provide up to eight
DNS server IP addresses. When inputting more than one DNS server IP address,
separate two neighboring IP addresses with a space.
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s), through which you can
specify the corresponding interface address pools.
all: (In comparison with the ip-address argument) Specifies all
DNS server IP addresses.
all: (In
comparison with the interface keyword) Specifies all interface address
pools.
Description
Use the dhcp server dns-list command
to configure DNS server IP address(es) for the DHCP address pool(s) of
specified interface(s).
Use the undo dhcp server dns-list
command to remove the DNS server IP address(es) configured for the DHCP address
pool(s) of the specified interface(s).
By default, no DNS server IP address is
configured for a DHCP interface address pool.
If you execute the dhcp server dns-list
command repeatedly, the new configuration overwrites the previous one.
Related command: dns-list.
Example
# Configure the DNS server IP address
1.1.1.254 for the DHCP address pool of the VLAN interface 1.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] interface Vlan-interface 1
[H3C-Vlan-interface1] dhcp server
dns-list 1.1.1.254
Syntax
VLAN interface view:
dhcp server domain-name domain-name
undo dhcp server domain-name
System view:
dhcp server domain-name domain-name { interface interface-type
interface-number [ to interface-type interface-number ] | all
}
undo dhcp server domain-name { interface interface-type interface-number [ to
interface-type interface-number ] | all }
View
System view/VLAN interface view
Parameter
domain-name:
Domain name of the DHCP clients whose IP addresses are from the specified
interface address pool(s). This argument is a string of 3 to 50 characters.
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s), through which you can
specify the corresponding interface address pool(s).
all: Specifies all interface address pools.
Description
Use the dhcp server domain-name
command to configure a domain name for the DHCP clients whose IP addresses are
from the specified interface address pool(s).
Use the undo dhcp server domain-name
command to remove the configured domain name.
By default, no domain name is configured
for the DHCP clients.
Related command: domain-name.
Example
# Set aabbcc.com as the domain name of the
DHCP client whose IP address is obtained from the DHCP address pool of the
current VLAN interface 1.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] interface Vlan-interface 1
[H3C-Vlan-interface1] dhcp server
domain-name aabbcc.com
Syntax
VLAN interface view:
dhcp server expired { day day [ hour hour [ minute minute
] ] | unlimited }
undo dhcp server expired
System view:
dhcp server expired { day day [ hour hour [ minute minute
] ] | unlimited } { interface interface-type
interface-number [ to interface-type interface-number ] | all
}
undo dhcp server expired { interface interface-type interface-number [ to
interface-type interface-number ] | all }
View
System view/VLAN interface view
Parameter
day day:
Specifies the number of days. The day argument ranges from 0 to 365.
hour hour:
Specifies the number of hours. The hour argument ranges from 0 to 23.
minute minute:
Specifies the number of minutes. The minute argument ranges from 0 to
59.
unlimited:
Specifies that the lease time is unlimited. (But actually, the system limits
the maximum lease time to about 25 years.)
interface
interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s), through which you can
specify the corresponding interface address pool(s).
all: Specifies all interface address pools.
Description
Use the dhcp server expired command
to configure the lease time of the IP addresses in the specified interface
address pool(s).
Use the undo dhcp server expired
command to restore the default lease time.
The default lease time is one day.
Related command: expired.
Example
# Set the lease time of the IP addresses in
all interface address pools to be 1 day, 2 hours and 3 minutes.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server expired day 1 hour
2 minute 3 all
Syntax
dhcp server forbidden-ip low-ip-address [ high-ip-address
]
undo dhcp server forbidden-ip low-ip-address [ high-ip-address ]
View
System view
Parameter
low-ip-address: IP address that is not available for being assigned to DHCP
clients automatically (An IP address of this kind is known as a forbidden IP
address). This argument also marks the lower end of the range of the forbidden
IP addresses.
high-ip-address: IP address that is not available for being assigned to DHCP
clients. This argument also marks the higher end of the range of the forbidden
IP addresses. Note that this argument cannot be less than the low-ip-address
argument. If you do not provide this argument, only the IP address specified by
the low-ip-address argument is forbidden.
Description
Use the dhcp server forbidden-ip
command to forbid the specified IP addresses in a DHCP address pool to be
automatically assigned.
Use the undo dhcp server forbidden-ip
command to cancel this configuration.
By default, all IP addresses in an address
pool are allowed to be automatically assigned.
Note that the specified address range
cannot contain statically-bound addresses when you use the undo dhcp server
forbidden-ip command.
Related command: dhcp server ip-pool,
network, static-bind ip-address and dhcp server static-bind.
Example
# Forbid the IP addresses in the range
10.110.1.1 to 10.110.1.63 to be automatically assigned.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server forbidden-ip
10.110.1.1 10.110.1.63
Syntax
dhcp server ip-pool pool-name
undo dhcp server ip-pool pool-name
View
System view
Parameter
pool-name:
Name of a DHCP address pool, which uniquely identifies the address pool. This
argument is a string of 1 to 35 characters.
Description
Use the dhcp server ip-pool command
to create a global DHCP address pool and enter DHCP address pool view. If the
address pool identified by the pool-name argument already exists, this
command leads you to DHCP address pool view.
Use the undo dhcp server ip-pool
command to remove a specified DHCP address pool.
By default, no global DHCP address pool is
created.
Related command: dhcp enable.
Example
# Create DHCP address pool 0.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server ip-pool 0
[H3C-dhcp-pool-0]
Syntax
VLAN interface view:
dhcp server nbns-list ip-address&<1-8>
undo dhcp server nbns-list { ip-address | all }
System view:
dhcp server nbns-list ip-address&<1-8> { interface interface-type
interface-number [ to interface-type interface-number ] | all
}
undo dhcp server nbns-list { ip-address | all } { interface interface-type
interface-number [ to interface-type interface-number ] | all
}
View
System view/VLAN interface view
Parameter
ip-address&<1-8>:
IP address of a NetBIOS server. &<1-8> means you can provide up to
eight NetBIOS server IP addresses. When inputting more than one NetBIOS server
IP address, separate two neighboring IP addresses with a space.
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s), through which you can
specify the corresponding interface address pool(s).
all: (In comparison with the ip-address argument) Specifies all
NetBIOS server IP addresses.
all: (In
comparison with the interface keyword) Specifies all interface address
pools.
Description
Use the dhcp server nbns-list
command to configure NetBIOS server IP address(es) for the specified DHCP
interface address pool(s).
Use the undo dhcp server nbns-list
command to remove the NetBIOS server IP address(es) configured for the
specified DHCP interface address pool(s).
By default, no NetBIOS server IP address is
configured for a DHCP interface address pool.
If you execute the dhcp server nbns-list
command repeatedly, the new configuration overwrites the previous one.
Related command: nbns-list and dhcp
server netbios-type.
Example
# Configure the NetBIOS server IP address 10.12.1.99
for all the DHCP interface address pools.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server nbns-list
10.12.1.99 all
Syntax
VLAN interface view:
dhcp server netbios-type { b-node | h-node | m-node | p-node }
undo dhcp server netbios-type
System view:
dhcp server netbios-type { b-node | h-node | m-node | p-node } {
interface interface-type interface-number [ to interface-type
interface-number ] | all }
undo dhcp server netbios-type { interface interface-type interface-number [ to
interface-type interface-number ] | all }
View
System view/VLAN interface view
Parameter
b-node:
Specifies the broadcast type. Nodes of this type acquire host name-to-IP
address mapping by broadcasting.
p-node:
Specifies the peer-to-peer type. Nodes of this type acquire host name-to-IP
address mapping by communicating with the NetBIOS server.
m-node:
Specifies the m-typed mixed type. Nodes of this type are p-nodes with some
broadcasting features. (The character m here stands for mixed.)
h-node:
Specifies the hybrid type. Nodes of this type are b-nodes with peer-to-peer
communicating features.
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s), through which you can
specify the corresponding interface address pools.
all:
Specifies all interface address pools.
Description
Use the dhcp server netbios-type
command to configure the NetBIOS node type of the DHCP clients whose IP
addresses are from the specified interface address pool(s).
Use the undo dhcp server netbios-type
command to restore the default NetBIOS node type.
By default, no NetBIOS node type is
specified and the default NetBIOS node type is h-node.
Related command: netbios-type and dhcp
server nbns-list.
Example
# Specify p-node as the NetBIOS node type
of the DHCP clients whose IP addresses are from the DHCP address pool of VLAN
interface 1.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] interface vlan-interface 1
[H3C-Vlan-interface1] dhcp server
netbios-type p-node
Syntax
VLAN interface view:
dhcp server option code { ascii ascii-string
| hex hex-string&<1-10> | ip-address ip-address&<1-8>
}
undo dhcp server option code
System view:
dhcp server option code { ascii ascii-string
| hex hex-string&<1-10> | ip-address ip-address&<1-8>
} { interface interface-type interface-number [ to interface-type
interface-number ] | all }
undo dhcp server option code { interface interface-type interface-number [
to interface-type interface-number ] | all }
View
System view/VLAN interface view
Parameter
code:
Customized option number, ranging from 2 to 254. Note that this argument cannot
be 3, 6, 15, 44, 46, 50 through 55, 57 through 59.
ascii
ascii-string: Specifies a string that is of 1 to 63
characters. Note that each character of the string must be an ASCII character.
hex hex-string&<1-10>:
Specifies strings, a hexadecimal number of 1 to 8 digits. &<1-10>
means you can provide up to 10 such strings. When inputting more than one
string, separate two neighboring strings with a space.
ip-address ip-address&<1-8>: Specifies IP
addresses. &<1-8> means you can provide up to eight IP addresses.
When inputting more than one IP address, separate two neighboring IP addresses
with a space.
interface interface-type interface-number [ to interface-type
interface-number ]: Specifies the interface(s), through which you can
specify the corresponding interface address pools.
all:
Specifies all interface address pools.
Description
Use the dhcp server option command
to customize DHCP options for the specified DHCP interface address pool(s).
Use the undo dhcp server option
command to remove the customized DHCP options.
If you execute the dhcp server option
command repeatedly, the new configuration overwrites the previous one.
Related command: option.
Example
# Configure option 100 to be 0x11 and 0x22
for all DHCP interface address pools.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server option 100 hex 11
22 all
Syntax
dhcp server ping { packets number | timeout milliseconds
}
undo dhcp server ping { packets | timeout }
View
System view
Parameter
packets number: Specifies the number of the packets to be sent in a ping test. The
number argument ranges from 0 to 10 and defaults to 2. Value 0 means no
packet will be sent.
timeout milliseconds: Specifies the timeout time (in milliseconds) of each packet. The milliseconds
argument ranges from 0 to 10,000 and defaults to 500.
Description
Use the dhcp server ping command to
set the maximum number of the ICMP packets a DHCP server sends in a ping test
and the maximum response timeout time of each ICMP packet.
Use the undo dhcp server ping
command to restore the default settings.
Example
# Set the maximum number of the packets the
DHCP server sends in a ping test to 10, and the timeout time of each packet to
300 milliseconds.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server ping packets 10
[H3C] dhcp server ping timeout 300
Syntax
dhcp server static-bind ip-address ip-address mac-address
mac-address
undo dhcp server static-bind { ip-address ip-address | mac-address mac-address
}
View
VLAN interface view
Parameter
ip-address: IP address to be statically bound. Note that the specified IP
address must belong to the same network segment as that of the VLAN interface.
mac-address:
MAC address to which the IP address is statically
bound.
Description
Use the dhcp server static-bind
command to statically bind an IP address of the current address pool to a MAC
address.
Use the undo dhcp server static-bind
command to cancel an IP-MAC address binding.
By default, no IP address in an address
pool is statically bound.
It should be noted that:
l
An IP address can be statically bound to only
one MAC address. A MAC address can be bound with only one IP address
statically.
l
The IP address to be statically bound cannot be
an interface IP address of the device; otherwise the static binding does not
take effect. The device of the bound MAC address can also obtain another IP
address.
Example
# Statically bind the IP address 10.1.1.1
to the MAC address 0000-e03f-0305. (Assume that the interface address pool of
VLAN interface 1 already exists and the IP address belongs to the address
pool.)
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] interface vlan-interface 1
[H3C-Vlan-interface1] dhcp server
static-bind ip-address 10.1.1.1 mac-address 0000-e03f-0305
Syntax
display dhcp server conflict { all | ip ip-address }
View
Any view
Parameter
all:
Specifies all IP addresses.
ip-address: Specifies an IP address.
Description
Use the display dhcp server conflict
command to display the statistics of IP address conflicts on the DHCP server.
Related command: reset dhcp server
conflict.
Example
# Display the statistics of IP address
conflicts.
<H3C> display dhcp server
conflict all
Address Discover Time
10.110.1.2 Jan 11 2003
11:57:07 PM
Table 1-1 Description
on the fields of the display dhcp server conflict command
|
Field
|
Description
|
|
Address
|
Conflicting IP address
|
|
Discover Time
|
Time when the conflict is detected
|
Syntax
display dhcp server expired { ip ip-address | pool [ pool-name ] | interface
[ interface-type interface-number ] | all }
View
Any view
Parameter
ip ip-address:
Specifies an IP address.
pool [ pool-name
]: Specifies a global address pool. The pool-name argument, a string
of 1 to 35 characters, is the name of an address pool. If you do not provide
this argument, this command applies to all global address pools.
interface [ interface-type
interface-number ]: Specifies a VLAN interface. If you do not specify a
VLAN interface, this command applies to all VLAN interfaces.
all:
Specifies all DHCP address pools.
Description
Use the display dhcp server expired
command to display the lease expiration information about an IP address, or the
lease expiration information about all IP addresses in one or all DHCP address
pools. When all the IP addresses in an address pool are assigned, the DHCP
server assigns the IP addresses that are expired to DHCP clients.
Example
# Display the lease expiration information
about the IP addresses in all DHCP address pools.
<H3C> display dhcp server
expired all
Global pool:
IP address Hardware address
Lease expiration Type
Interface pool:
IP address Hardware address Lease
expiration Type
--- total 0 entry
---
Table 1-2 Description
on the fields of the display dhcp server expired command
|
Field
|
Description
|
|
Global pool
|
The information about the expired IP addresses
of global address pools
|
|
Interface pool
|
The information about the expired IP
addresses of interface address pools
|
|
IP address
|
Bound IP addresses
|
|
Hardware address
|
MAC addresses to which IP addresses are
bound
|
|
Lease expiration
|
The time when a lease time expires
|
|
Type
|
Address binding type
|
Syntax
display dhcp server free-ip
View
Any view
Parameter
None
Description
Use the display dhcp server free-ip
command to display the free (that is, unassigned) IP addresses.
Example
# Display the free IP addresses.
<H3C> display dhcp server
free-ip
IP Range from 1.0.0.0
to 2.2.2.1
IP Range from 2.2.2.3
to 2.255.255.255
IP Range from 4.0.0.0
to 4.255.255.255
IP Range from 5.5.5.0
to 5.5.5.0
IP Range from 5.5.5.2
to 5.5.5.255
Syntax
display dhcp server ip-in-use { ip ip-address | pool [ pool-name ] | interface
[ interface-type interface-number ] | all }
View
Any view
Parameter
ip ip-address:
Specifies an IP address.
pool [ pool-name
]: Specifies a global address pool. The pool-name argument, a string
of 1 to 35 characters, is the name of an address pool. If you do not provide
this argument, this command applies to all global address pools.
interface [ interface-type
interface-number ]: Specifies a VLAN interface. If you do not specify a
VLAN interface, this command applies to all VLAN interfaces.
all:
Specifies all address pools.
Description
Use the display dhcp server ip-in-use
command to display the address binding information of an IP address, the
specified DHCP address pool(s) or all DHCP address pools.
Related command: reset dhcp server
ip-in-use.
Example
# Display the address binding information
of all DHCP address pools.
<H3C> display dhcp server
ip-in-use all
Global pool:
IP address Hardware address
Lease expiration Type
2.2.2.2 4444-4444-4444 NOT
Used Manual
Interface pool:
IP address Hardware address
Lease expiration Type
5.5.5.1 0050-ba28-930a
NOT Used Manual
--- total 2 entry ---
Table 1-3 Description
on the fields of the display dhcp server ip-in-use command
|
Field
|
Description
|
|
Global pool
|
Address binding information of global
DHCP address pools
|
|
Interface pool
|
Address binding information of interface
DHCP address pools
|
|
IP address
|
Bound IP address
|
|
Hardware address
|
MAC address to which the IP address is
bound
|
|
Lease expiration
|
Time when the lease expires
|
|
Type
|
Address binding type
|
Syntax
display dhcp server statistics
View
Any view
Parameter
None
Description
Use the display dhcp server statistics
command to display the statistics on a DHCP server.
Related command: reset dhcp server
statistics.
Example
# Display the statistics on a DHCP server.
<H3C> display dhcp server
statistics
Global Pool:
Pool Number: 5
Binding
Auto: 0
Manual: 1
Expire: 0
Interface Pool:
Pool Number: 1
Binding
Auto: 1
Manual: 0
Expire: 0
Boot Request: 6
Dhcp Discover: 1
Dhcp Request: 4
Dhcp Decline: 0
Dhcp Release: 1
Dhcp Inform: 0
Boot Reply: 4
Dhcp Offer: 1
Dhcp Ack: 3
Dhcp Nak: 0
Bad Messages: 0
Table 1-4 Description
on the fields of the display dhcp server statistics command
|
Field
|
Description
|
|
Global Pool
|
Statistics about global address pools
|
|
Interface Pool
|
Statistics about interface address pools
|
|
Pool Number
|
Number of address pools
|
|
Auto
|
Number of the automatically bound IP
addresses
|
|
Manual
|
Number of the manually bound IP addresses
|
|
Expire
|
Number of the expired IP addresses
|
|
Boot Request: 6
Dhcp Discover: 1
Dhcp Request: 4
Dhcp Decline: 0
Dhcp Release: 1
Dhcp Inform: 0
|
Statistics about the DHCP packets
received from DHCP clients
|
|
Boot Reply: 4
Dhcp Offer: 1
Dhcp Ack: 3
Dhcp Nak: 0
|
Statistics about the DHCP packets sent to
DHCP clients
|
|
Bad Messages
|
Number of the error DHCP packets
|
Syntax
display dhcp server tree { pool [ pool-name ] | interface [ interface-type
interface-number ] | all }
View
Any view
Parameter
pool [ pool-name
]: Specifies a global address pool. The pool-name argument, a string
of 1 to 35 characters, is the name of an address pool. If you do not provide
this argument, this command applies to all global address pools.
interface [ interface-type
interface-number ]: Specifies a VLAN interface. If you do not specify a
VLAN interface, this command applies to all VLAN interfaces.
all:
Specifies all address pools.
Description
Use the display dhcp server tree
command to display information about address pool tree.
Example
# Display the information about address
pool tree.
<H3C> display dhcp server tree
all
Global pool:
Pool name: 5
network 10.10.1.0 mask 255.255.255.0
Child node:6
Sibling node:7
option 10 ip-address 255.0.0.0
expired 1 0 0
Pool name: 6
static-bind ip-address 10.10.1.2
mask 255.0.0.0
static-bind mac-address
000f-e2fc-0001
Parent node:5
option 10 ip-address 255.255.0.0
expired 1 0 0
Pool name: 7
network 10.10.1.64 mask
255.255.255.192
PrevSibling node:5
option 10 ip-address 255.0.0.0
gateway-list 2.2.2.2
dns-list 1.1.1.1
domain-name 444444
nbns-list 3.3.3.3
expired 1 0 0
Table 1-5 Description
on the fields of the display dhcp server tree command
|
Field
|
Description
|
|
Global pool
|
Information about global address pools
|
|
Interface pool
|
Information about interface address pools
|
|
Pool name
|
Address pool name
|
|
network
|
Assignable IP address range
|
|
static-bind ip-address 10.10.1.2 mask
255.0.0.0
static-bind mac-address 000f-e2fc-0001
|
Statically bound IP and MAC addresses
|
|
Child node:6
|
The address pool 6 is the child node of
this node.
This field can display the information about
the following types of node:
Child node: Displays the information
about an address pool that is a child of the current address pool.
Parent node: Displays the information
about the address pool that is the parent of the current address pool.
Sibling node: Displays the information
about the next sibling address pool of the current address pool. (The order
of sibling address pools are determined by the time when they are
configured.)
PrevSibling node: Displays the
information about the previous sibling address pool of the current address
pool.
|
|
option
|
Customized DHCP options
|
|
expired
|
The address lease time (in terms of
number of days, hours, and minutes)
|
|
gateway-list
|
List of the gateways configured for the
DHCP clients
|
|
dns-list
|
List of the DNS servers configured for
the DHCP clients
|
|
domain-name
|
The domain name configured for the DHCP
clients
|
|
nbns-list
|
List of the NetBIOS servers configured
for the DHCP clients
|
Syntax
dns-list
ip-address&<1-8>
undo dns-list { ip-address | all }
View
DHCP address pool view
Parameter
ip-address&<1-8>:
IP address of a DNS server. &<1-8> string means you can provide up to
eight DNS server IP addresses. When inputting more than one IP address,
separate two neighboring IP addresses with a space.
all:
Specifies all configured DNS server IP addresses.
Description
Use the dns-list command to
configure one or multiple DNS server IP addresses for a global DHCP address
pool.
Use the undo dns-list command to
remove one or all DNS server IP addresses configured for the DHCP address pool.
By default, no DNS server IP address is
configured.
If you execute the dns-list command
repeatedly, the new configuration overwrites the previous one.
Related command: dhcp server dns-list
and dhcp server ip-pool.
Example
# Configure the DNS server IP address
1.1.1.254 for global DHCP address pool 0.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server ip-pool 0
[H3C-dhcp-pool-0] dns-list 1.1.1.254
Syntax
domain-name domain-name
undo domain-name
View
DHCP address pool view
Parameter
domain-name:
Domain name for the DHCP clients of a global DHCP address pool, a string of 3
to 50 characters.
Description
Use the domain-name command to
configure a domain name for the DHCP clients of a global DHCP address pool.
Use the undo domain-name command to
remove the domain name.
By default, no domain name is configured
for the DHCP clients of a global DHCP address pool.
Related command: dhcp server ip-pool
and dhcp server domain-name.
Example
# Configure the domain name
“mydomain.com” for the DHCP clients of the global DHCP address pool
0.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server ip-pool 0
[H3C-dhcp-pool-0] domain-name
mydomain.com
Syntax
expired { day
day [ hour hour [ minute minute ] ] | unlimited
}
undo expired
View
DHCP address pool view
Parameter
day day:
Specifies the number of days. The day argument ranges from 0 to 365.
hour hour:
Specifies the number of hours. The hour argument ranges from 0 to 23.
minute minute:
Specifies the number of minutes. The minute argument ranges from 0 to
59.
unlimited:
Specifies that the lease time is unlimited. (But actually, the system limits
the maximum lease time to about 25 years.)
Description
Use the expired command to configure
the lease time of the IP addresses in a global DHCP address pool.
Use the undo expired command to
restore the default lease time.
The default lease time is one day.
Related command: dhcp server ip-pool
and dhcp server expired.
Example
# Set the lease time of the IP addresses in
the global DHCP address pool 0 to 1 day, 2 hours and 3 minutes.
<H3C> system-view
System View: return to User View with
Ctrl+Z.
[H3C] dhcp server ip-pool 0
[H3C-dhcp-pool-0] expired day 1 hour
2 minute 3
