3com 5500-ei pwr Installation Instruction

 

4-7 

Follow these steps to configure a handling policy for DHCP packets with Option 82: 

Enter system view 

— 

Configure a global handling 
policy for requests that contain 
Option 82  

dhcp-snooping information 
strategy { drop | keep | 
replace } 

Optional 

The default handling policy is 
replace.  

Enter Ethernet port view 

interface interface-type 
interface-number 

— 

Configure a handling policy for 
requests that contain Option 82 
received on the specified 
interface 

dhcp-snooping information 
strategy { drop | keep | 
replace } 

Optional 

The default policy is replace. 

 

If a handling policy is configured on a port, this configuration overrides the globally configured handling 

policy for requests received on this port, while the globally configured handling policy applies on those 

ports where a handling policy is not natively configured. 

 

S5500-EI Series Ethernet Switches support the HEX or ASCII format for the Option 82 field. 

Follow these steps to configure a storage format for the Option 82 field: 

Enter system view 

system-view 

— 

Configure a storage format 
for the Option 82 field 

dhcp-snooping information 
format { hex | ascii } 

Optional 

By default, the format is hex. 

 

The dhcp-snooping information format command applies only to the default content of the Option 82 

field. If you have configured the circuit ID or remote ID sub-option, the format of the sub-option is ASCII, 

instead of the one specified with the dhcp-snooping information format command. 

 

Follow these steps to configure the circuit ID sub-option: 

Enter system view 

system-view 

—