R21xx-HP FlexFabric 11900 Layer 3 IP Services Configuration Guide

43
Ste
p
Command Remarks
5. (Optional.) Configure the voice
VLAN.
voice-config voice-vlan vlan-id
{ disable | enable }
By default, no voice VLAN is
configured.
6. (Optional.) Specify the failover IP
address and dialer string.
voice-config fail-over ip-address
dialer-string
By default, no failover IP
address or dialer string is
specified.
Configuring self-defined DHCP options
IMPORTANT:
Use caution when configuring self-defined DHCP options because the configuration might affect DHCP
operation.
You can self-define options for the following purposes:
• Add newly released options.
• Add options for which the vendor defines the contents, Option 43 for example.
• Add options for which the CLI does not provide a dedicated configuration command like
gateway-list. For example, you can use the option 4 ip-address 1.1.1.1 command to define the time
server address 1.1.1.1 f o r D H C P c l i e n t s .
• Add all option values if the actual requirement exceeds the limit for a dedicated option
configuration command. For example, the dns-list command can specify up to eight DNS servers.
To specify more than eight DNS servers, you must use the option 6 command to define all DNS
servers.
To configure a self-defined DHCP option in a DHCP address pool:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter DHCP address pool
view.
dhcp server ip-pool pool-name N/A
3. Configure a self-defined
DHCP option.
option code { ascii ascii-string | hex
hex-string | ip-address
ip-address&<1-8> }
By default, no self-defined DHCP
option is configured.
Table 2 Common DHCP options
Option Option name
Corresponding
command
Recommended option
command
p
arameters
3 Router Option gateway-list ip-address
6 Domain Name Server Option
dns-list ip-address
15 Domain Name domain-name ascii
44
NetBIOS over TCP/IP Name
Server Option
nbns-list ip-address
46
NetBIOS over TCP/IP Node
Type Option
netbios-type hex