Cisco SG220-26P Administration Guide

Configuring Security
Configuring DHCP Snooping
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x 222
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- Static —Indicates the IP address is static.
-
Dynamic —Indicates the IP address is defined as a dynamic address in
the DHCP database.
• Lease Time—The amount of time that the DHCP Snooping entry is active.
Addresses whose lease times are expired are deleted from the database.
Viewing Option 82 Statistics
To view DHCP Snooping Option 82 statistics:
STEP 1 Click Security > DHCP Snooping > Statistics.
STEP 2 Select the interface type (Port or LAG), click Go.
The following DHCP Snooping Option 82 statistical information is displayed:
• Interface—Port identifier or LAG identifier.
• Forward—Total number of forwarded packets.
• Chaddr Check Dropped—Total number of packets that are dropped by
Chaddr check.
• Untrust Port Dropped—Total number of packets that are dropped by
untrusted ports.
• Untrust Port with Option 82 Dropped—Total number of packets that are
dropped by untrusted ports that enable Option 82.
• Invalid Drop—Total number of packets that are dropped due to invalid.
STEP 3 Click Refresh to refresh the data in the table, or click Clear to clear all data in the
table.

Cisco SG220-26P Specifications

General

Model	SG220-26P
Ports	26
PoE Ports	24
Switching Capacity	52 Gbps
Forwarding Rate	38.69 Mpps
Layer	Layer 2
Power Supply	Internal
VLANs Supported	256
Management	Web-based GUI, SNMP
Operating Temperature	0°C to 40°C
Storage Temperature	-4°F to 158°F (-20°C to 70°C)
Operating Humidity	10% to 90% non-condensing
Storage Humidity	5% to 95% non-condensing
Dimensions	440 x 44 x 257 mm
Weight	3.3 kg