Cisco SG500-28P Administration Guide

IP Configuration
IPv4 Management and Interfaces
303 Cisco 500 Series Stackable Managed Switch Administration Guide Release 1.3
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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 SG500-28P Specifications

General

Switching Capacity	56 Gbps
Forwarding Rate	41.67 Mpps
Flash Memory	32 MB
Operating Humidity	10% to 90% non-condensing
PoE	Yes
Layer	Layer 2 and Layer 3
Stackable	Yes
Power Supply	Internal
Management	Web-based GUI, CLI, SNMP
Jumbo Frame Support	Yes
VLANs	4096 VLANs
MAC Address Table Size	16K entries
Dimensions	440 x 44 x 350 mm
Operating Temperature	0°C to 45°C
Ports	28 (24 x 10/100/1000 PoE+ ports, 4 x 10/100/1000/SFP combo ports)