Command Manual – DHCP
H3C S7500E Series Ethernet Switches Chapter 1 DHCP Server Configuration Commands
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fail-over ip-address dialer-string: Specifies the failover IP address and dialer string.
The dialer-string is a string of 1 to 39 characters, which can be 0 to 9, and “*”.
ncp-ip ip-address: Specifies IP address for the primary network calling processor.
voice-vlan vlan-id: Specifies the voice VLAN ID, in the range of 2 to 4094.
z disable: Disables the specified voice VLAN ID, meaning DHCP clients will not
take this ID as their voice VLAN.
z enable: Enables the specified voice VLAN ID, meaning DHCP clients will take this
ID as their voice VLAN.
Description
Use the voice-config command to configure specified Option 184 contents in a DHCP
address pool.
Use the undo voice-config command to remove specified Option 184 contents from a
DHCP address pool.
By default, no Option 184 content is configured.
Note that specifying the IP address of a network calling processor first is necessary to
make other configured parameters take effect.
Examples
# Configure Option 184 in DHCP address pool 0: the primary network calling processor
10.1.1.1, backup network calling processor 10.2.2.2, voice VLAN ID 3 that is enabled,
the failover IP address 10.3.3.3 and dialer string 99*.
<Sysname> system-view
[Sysname] dhcp server ip-pool 0
[Sysname-dhcp-pool-0] voice-config ncp-ip 10.1.1.1
[Sysname-dhcp-pool-0] voice-config as-ip 10.2.2.2
[Sysname-dhcp-pool-0] voice-config voice-vlan 3 enable
[Sysname-dhcp-pool-0] voice-config fail-over 10.3.3.3 99*
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