D-Link DES-3326 User Manual - page 333
DES-3326 Layer 3 Fast Ethernet Switch User’s Guide
Web-Based Network Management
319
Group 1
Group 2
Group 3
Group 4
1,2,3,4,
5,6,7,8,
9,10,11,12,
25,26
13,14,15,16 17,18,19,20 21,22,23,24
Only two ports on an optional front-panel module (ports 25 and 26)
can be configured as a trunk group.
BOOTP/DHCP Relay
BOOTP/DHCP relay enables end stations to use a BOOTP or
DHCP server to obtain TCP/IP configuration information or boot
files to be loaded into memory, even if the servers are not on the
local IP interface.
If the BOOTP or DCHP server and end station are on the same IP
interface, no relay is necessary. If the servers and the end stations
are on different IP interfaces, a relay agent is necessary for the
switch to forward the messages.
The relay agent forwards these packets between IP interfaces, and
therefore must know the IP addresses of the BOOTP and DHCP
servers and their respective subnet names (or IP interface names).
When the switch receives packets destined for a BOOTP or DHCP
server, it forwards them to specific servers as defined in the
following configuration. The switch also forwards packets from the
BOOTP or DHCP servers to the appropriate subnets.
The first task is to set some parameters for the relay agent to
decide whether or not to forward a given BOOTP/DCHP packet.