Cisco SG500-28 Administration Guide

IP Configuration
IPv4 Management and Interfaces
303 Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3
17
DHCP Snooping Along With DHCP Relay
If both DHCP Snooping and DHCP Relay are globally enabled, then if DHCP
Snooping is enabled on the client's VLAN, DHCP Snooping rules contained in the
DHCP Snooping Binding database are applied, and the DHCP Snooping Binding
database is updated in the client's and DHCP server’s VLAN, for packets that are
relayed.
DHCP Default Configuration
The following describes DHCP Snooping and DHCP Relay default options.
DHCP Default Options
Configuring DHCP Work Flow
To configure DHCP Relay and DHCP Snooping:
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
Option Default State
DHCP Snooping Enabled
Option 82 Insertion Not enabled
Option 82 Passthrough Not enabled
Verify MAC Address Enabled
Backup DHCP Snooping Binding
Database
Not enabled
DHCP Relay Disabled

Cisco SG500-28 Specifications

General

Ports	28
Port Type	Gigabit Ethernet
Layer	Layer 3
Switching Capacity	56 Gbps
PoE Support	No
Form Factor	Rack-mountable
RAM	256 MB
Flash Memory	32 MB
Power Supply	Internal
Jumbo Frame Support	9KB
VLAN Support	Yes
Operating Temperature	32°F to 113°F (0°C to 45°C)
Operating Humidity	10% to 90% non-condensing
Dimensions	17.3 x 10.2 x 1.7 in (440 x 260 x 44 mm)
MAC Address Table Size	16, 000 entries