Relay Agent Information - Siemens SCALANCE XB-200 Configuration Manual

Deleting a DHCP option
1. Enable the "Select" check box in the row to be deleted.
Repeat this for all entries you want to delete.
2. Click the "Delete" button.
The entry is deleted.
5.4.8.5

Relay Agent Information

On this page you define that devices with a certain remote ID and circuit ID are assigned the
IPv4 addresses from a specific address band.
If you create such an entry for an address band, the ports of the address band only react to
DHCP queries via a DHCP relay agent (option 82). You can create further address bands for
the same VLAN IP interfaces so that ports react to different requests.
Note
Extension or release of an IPv4 address assigned via a relay agent.
With address assignments via a relay agent "Renew" and "Release" messages going directly
from the DHCP client to the DHCP server are ignored by the server.
• The extension of the period for an IPv4 address assigned via a relay agent is achieved
using a "Rebinding" message that the client sends automatically as a broadcast.
• To speed up the release of an IPv4 address assigned via a relay agent, configure a
shorter period of validity.
SCALANCE XB-200/XC-200/XP-200 Web Based Management
Configuration Manual, 07/2016, C79000-G8976-C360-04
Configuring with Web Based Management
5.4 The "System" menu
115