36
Syntax
ipv6 dhcp server forbidden-address
start-ipv6-address
[
end-ipv6-address
]
[
vpn-instance
vpn-instance-name
]
undo
ipv6 dhcp server forbidden-address
start-ipv6-address
[
end-ipv6-address
]
[
vpn-instance
vpn-instance-name
]
Default
Except for the DHCPv6 server address, all IPv6 addresses in a DHCPv6 address pool are
assignable.
Views
System view
Predefined user roles
network-admin
Parameters
start-ipv6-address
: Specifies the start IPv6 address.
end-ipv6-address
: Specifies the end IPv6 address, which cannot be lower than
start-ipv6-address
.
If you do not specify an end IPv6 address, only the start IPv6 address is
excluded from dynamic allocation. If you specify an end IPv6 address, the IP addresses from
start-ipv6-address
through
end-ipv6-address
are all excluded from dynamic allocation.
vpn-instance
vpn-instance-name
: Specifies an MPLS L3VPN instance by its name, a
case-sensitive string of 1 to 31 characters. If the excluded IPv6 addresses belong to the public
network, do not specify this option.
Usage guidelines
The IPv6 addresses of some devices such as the gateway and FTP server cannot be assigned to
clients. Use this command to exclude such addresses from dynamic allocation.
If the excluded IPv6 address is in a static DHCPv6 binding, the address can still be assigned to the
client.
The address or address range specified in the
undo
form of the command must be the same as the
address or address range specified in the command. To remove an IP address that has been
specified as part of an address range, you must remove the entire address range.
You can execute this command multiple times to exclude multiple IPv6 address ranges from dynamic
allocation.
Examples
# Exclude IPv6 addresses of 2001:10:110::1 through 2001:10:110::20 from dynamic assignment.
<Sysname> system-view
[Sysname] ipv6 dhcp server forbidden-address 2001:10:110::1 2001:10:110::20
Related commands
ipv6 dhcp server forbidden-prefix
static-bind
ipv6 dhcp server forbidden-prefix
Use
ipv6 dhcp server forbidden-prefix
to exclude IPv6 prefixes in the DHCPv6 prefix
pool from dynamic allocation.
Use
undo ipv6 dhcp server forbidden-prefix
to remove the configuration.
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Страница 114: ...ii tftp client ipv6 source 41 tftp client source 41 tftp ipv6 42 tftp server acl 44 tftp server ipv6 acl 44...
Страница 285: ...i Contents Tcl commands 1 cli 1 tclquit 1 tclsh 2...
Страница 288: ...i Contents Python commands 1 exit 1 python 1 python filename 2...
Страница 291: ...i Contents Automatic configuration commands 1 autodeploy udisk enable 1...
Страница 323: ...25 Sysname Ten GigabitEthernet1 0 51 undo shutdown Related commands irf port...
Страница 396: ...i Contents Bulk interface configuration commands 1 display interface range 1 interface range 1 interface range name 3...
Страница 460: ...i Contents Port isolation commands 1 display port isolate group 1 port isolate enable 2 port isolate group 2...
Страница 465: ...ii stp vlan enable 55 vlan mapping modulo 55...
Страница 589: ...60 Examples Enable LLDP for automatic IP phone discovery Sysname system view Sysname voice vlan track lldp...
Страница 602: ...12 Related commands display mvrp statistics...
Страница 609: ...i Contents VLAN mapping commands 1 display vlan mapping 1 vlan mapping 2...
Страница 678: ...9 Related commands reset pppoe relay statistics...
Страница 846: ...i Contents Basic IP forwarding commands 1 display fib 1 ip forwarding table save 2...
Страница 1073: ...i Contents HTTP redirect commands 1 http redirect https port 1 http redirect ssl server policy 1...
Страница 1087: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 1340: ...9 Sysname ipv6 route static default preference 120 Related commands display ipv6 routing table protocol...
Страница 1649: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 1668: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 1770: ...i Contents Time range commands 1 display time range 1 time range 1...
Страница 2026: ...34 Related commands display mac authentication...
Страница 2028: ...ii...
Страница 2143: ...i Contents User profile commands 1 display user profile 1 user profile 2...
Страница 2308: ...61 ipsec transform set...
Страница 2473: ...i Contents TCP attack prevention commands 1 tcp anti naptha enable 1 tcp check state interval 1 tcp state 2...
Страница 2531: ...i Contents SAVI commands 1 ipv6 savi down delay 1 ipv6 savi log enable 1 ipv6 savi strict 2...
Страница 2534: ...3 Sysname ipv6 savi strict Related commands ipv6 verify source...
Страница 2541: ...i Contents Crypto engine commands 1 display crypto engine 1 display crypto engine statistics 1 reset crypto engine statistics 3...
Страница 2545: ...i Contents FIPS commands 1 display crypto version 1 display fips status 1 fips mode enable 2 fips self test 4...
Страница 2791: ...14 Sysname track 1 Related commands delay display track...
Страница 2939: ...9 sntp authentication keyid sntp reliable authentication keyid...
Страница 2967: ...27 Related commands apply poe profile poe enable poe max power interface view poe priority...
Страница 3240: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...
Страница 3263: ...Documentation feedback You can e mail your comments about product documentation to info h3c com We appreciate your comments...