3com S7906E Guía De Referencia

 

4-2 

Related commands: display dhcp-snooping. 

# Enable DHCP snooping. 

<Sysname> system-view 

[Sysname] dhcp-snooping 

dhcp-snooping information circuit-id format-type { ascii | hex } 

Ethernet port view 

2: System level 

ascii: Specifies the code type for the circuit ID sub-option as ascii. 

hex: Specifies the code type for the circuit ID sub-option as hex. 

Use the dhcp-snooping information circuit-id format-type command to configure the code type for 

the non-user-defined circuit ID sub-option. 

Use the undo dhcp-snooping information circuit-id format-type command to restore the default. 

By default, the code type for the circuit ID sub-option depends on the padding format of Option 82. Each 

field has its own code type. 

Note that: 

This command applies to configuring the non-user-defined circuit ID sub-option only. After you 

configure the padding content for the circuit ID sub-option using the dhcp-snooping information 

circuit-id string command, ASCII is adopted as the code type. 

# Configure the padding format for the non-user-defined circuit ID sub-option as ascii. 

<Sysname> system-view 

[Sysname] interface gigabitethernet 2/0/1 

[Sysname-GigabitEthernet2/0/1] dhcp-snooping information circuit-id format-type ascii 

dhcp-snooping information [ vlan vlan-id ] circuit-id string circuit-id 

undo dhcp-snooping information [ vlan vlan-id ] circuit-id string