Users Guide

Table 48. Option-82 status
Global Level Interface Level Option-82 status
Enable Enable Adds Option-82 information to
the packet.
Enable Disable Does not add Option-82
information to the packet.
Disable Enable Does not add Option-82
information to the packet.
Disable Disable Does not add Option-82
information to the packet.
Example
OS10(config)# ip dhcp-relay information-option
Supported
Releases
10.5.2.0 or later
ip dhcp-relay vss
Enables the support for the DHCPv4 Virtual Subnet Selection (VSS) option.
Syntax
ip dhcp-relay vss
Parameters None.
Defaults Disabled by default.
Command Mode CONFIGURATION
Usage
Information
After enabling the VSS option, the DHCPv4 virtual subnet selection support gets enabled globally.
Additionally, to send VRF information to the DHCP server, you must configure the VSS type information
on the respective DHCP client facing interfaces.
NOTE: Option-82 must be enabled Globally and at the interface level to activate VSS feature
support.
This command is restricted to netadmin and sysadmin roles users.
Example
OS10(config)# ip dhcp-relay vss
OS10-8986(config)# ip dhcp-relay ?
max-hops Maximum allowable hop count
server-override Enable relay server override sub-option
vss Enable VSS sub-option in relay agent
Supported
Releases
10.5.2 or later
ip dhcp-relay vss-info
Configures the VRF information to be carried in the option 151 field of relay packets to the server which allows the DHCP server
to decide the address pool for IP allocation.
Syntax
ip dhcp-relay vss-info type {0 [ value string]/1 [value 7-octet value]/255}
Parameters
● 0 string - Enter the type as 0 then the VRF name.
● 1 value - Enter the type as 1 then OUI:VRF-Index ,3 bytes OUI:4 bytes VRF_Index
● 255 - Enter the type as 255 for global or default address space.
Defaults No vss-info value is configured on the interface.
System management 301