User's Manual

Table Of Contents
Users Manual of SGS-5240 Series Managed Switch
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4.8.5.2 Relay
L3 Interface VLAN IDID of configured VLAN.
Server IP AddressAddresses of DHCP servers or relay servers to be used by the switch’s DHCP relay agent in order of
preference.
Restart DHCP RelayUse this button to re-initialize DHCP relay service.
4.8.5.3 Relay Option82
Insertion of Relay InformationEnable DHCP Option 82 information relay. (Default: Disabled)
DHCP Option Policy–Specifies how to handle client requests which already contain DHCP Option 82 information:
Drop- Floods the original request packet onto the VLAN that received it instead of relaying it. (This is the default.)
Keep- Retains the Option 82 information in the client request, inserts the relay agent’s address, and unicasts the
packet to the DHCP server.
Replace- Replaces the Option 82 information circuit-id and remote-id fields in the client’s request with information
provided by the relay agent itself, inserts the relay agent’s address, and unicasts the packet to the DHCP server.
DHCP Sub-option FormatSpecifies whether or not to use the sub-type and sub-length fields in the circuit-ID (CID) and
remote-ID (RID) in Option 82 information. (Default: Included)
Server IP AddressAddresses of DHCP servers or relay servers to be used by the switch’s DHCP relay agent in order of
preference.
4.8.5.4 Dynamic Provision
Device Management > DHCP > Dynamic Provision is used to enable dynamic provisioning via DHCP.
Dynamic Provision via DHCP Status
Enables dynamic provisioning via DHCP. (Default: Disabled)