Dell PowerConnect 5524P User Manual page 565

Table 19-1. DHCP Packet Handling when DHCP Snooping is Enabled (Continued)
Packet Type
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCPNAK
DHCPDECLINE
DHCPRELEASE
DHCPINFORM
DHCPLEASEQUERY
Arriving from Untrusted
Ingress Interface
Filter.
Forward to trusted
interfaces only.
Filter.
Filter.
Check if there is
information in the
database. If the
information exists and
does not match the
interface on which the
message was received, the
packet is filtered.
Otherwise the packet is
forwarded to trusted
interfaces only, and the
entry is removed from
database.
Same as
DHCPDECLINE.
Forward to trusted
interfaces only.
Filtered.
Dell PowerConnect 55xx Systems User Guide
Arriving from Trusted
Ingress Interface
Forward the packet
according to DHCP
information. If the
destination address is
unknown the packet is
filtered.
Forward to trusted
interfaces only.
Same as DHCPOFFER
and an entry is added to
the Binding database.
Same as DHCPOFFER.
Remove entry if exists.
Forward to trusted
interfaces only
Same as
DHCPDECLINE.
Forward to trusted
interfaces only.
Forward.
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