This value depends on the respective option. For option "35" according to RFC 1232, e.g. the ARP cache time is defined as follows:
ARP Cache Timeout Option This option specifies the time out in seconds for ARP cache entries. The time is specified as a 32-bit unsigned integer. The code for this option is 35, and its length is 4.
| Code | Len | Time | |||
|---|---|---|---|---|---|
| 35 | 4 | t1 | t2 | t3 | t4 | 
This description tells you that this the type "32-bit integer" is used for this option.
Note: You can find out the type of the option either from the corresponding RFC or from the
        manufacturer's documentation of their DHCP options.
    - SNMP ID:
 - 2.10.26.4
 - Telnet path:
 - Setup > DHCP > Additional-Options
 - Possible values:
 - String
 - Integer8
 - Integer16
 - Integer32
 - IP address
 
- Default:
 - String