Cisco SG350-28MP - Page 386

IP Configuration
IPv4 Management and Interfaces
Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4 299
16
DHCPOFFER Filter. Forward the packet according to
DHCP information. If the destination
address is unknown the packet is
filtered.
DHCPREQUEST Forward to trusted
interfaces only.
Forward to trusted interfaces only.
DHCPACK Filter. Same as DHCPOFFER and an entry is
added to the DHCP Snooping Binding
database.
DHCPNAK Filter. Same as DHCPOFFER. Remove entry
if exists.
DHCPDECLINE 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.
Forward to trusted interfaces only
DHCPRELEASE Same as
DHCPDECLINE.
Same as DHCPDECLINE.
DHCPINFORM Forward to trusted
interfaces only.
Forward to trusted interfaces only.
DHCPLEASEQUE
RY
Filtered. Forward.
Packet Type Arriving from Untrusted
Ingress Interface
Arriving from Trusted Ingress
Interface