Planet GS-4210-16T2S User Manual

User’s Manual of GS-4210-16T2S_24T2S_16P2S_24P2S_48T4S
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4.9.3 DHCP Snooping
4.9.3.1 DHCP Snooping Overview
The addresses assigned to DHCP clients on unsecure ports can be carefully controlled using the dynamic bindings registered
with DHCP Snooping. DHCP snooping allows a switch to protect a network from rogue DHCP servers or other devices which
send port-related information to a DHCP server. This information can be useful in tracking an IP address back to a physical port.
Command Usage
• Network traffic may be disrupted when malicious DHCP messages are received from an outside source. DHCP snooping is
used to filter DHCP messages received on a non-secure interface from outside the network or firewall. When DHCP
snooping is enabled globally and enabled on a VLAN interface, DHCP messages received on an untrusted interface from
a device not listed in the DHCP snooping table will be dropped.
• Table entries are only learned for trusted interfaces. An entry is added or removed dynamically to the DHCP snooping table
when a client receives or releases an IP address from a DHCP server. Each entry includes a MAC address, IP address, lease
time, VLAN identifier, and port identifier.
• When DHCP snooping is enabled, DHCP messages entering an untrusted interface are filtered based upon dynamic entries
learned via DHCP snooping.
• Filtering rules are implemented as follows:
 If the global DHCP snooping is disabled, all DHCP packets are forwarded.

Planet GS-4210-16T2S Specifications

General

Switch type	Managed
Switch layer	L2/L4
Quality of Service (QoS) support	Yes
Console port	RJ-45
SFP module slots quantity	2
Installed SFP modules quantity	0
Basic switching RJ-45 Ethernet ports type	Gigabit Ethernet (10/100/1000)
Basic switching RJ-45 Ethernet ports quantity	16
10G support	No
Number of VLANs	4094
Networking standards	IEEE 802.1D, IEEE 802.1Q, IEEE 802.1ab, IEEE 802.1p, IEEE 802.1s, IEEE 802.1w, IEEE 802.1x, IEEE 802.3, IEEE 802.3ab, IEEE 802.3ad, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
Virtual LAN features	Stacked VLAN, Private VLAN, Tagged VLAN, Protocol-based VLAN
Copper ethernet cabling technology	10BASE-T, 100BASE-TX, 1000BASE-T
Authentication	Port-based authentication
Security algorithms	802.1x RADIUS, HTTPS, SSH, SSL/TLS
Stackable	-
Form factor	1U
Certification	FCC, CE
Product color	Blue
Housing material	Metal
Throughput	26.7 Mpps
Jumbo frames	9216
MAC address table	8000 entries
Supported network protocols	IPv4 / IPv6
Input current	0.8 A
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power consumption (max)	10.4 W
Heat dissipation	35 BTU/h
Storage temperature (T-T)	-10 - 70 °C
Operating temperature (T-T)	0 - 50 °C
Operating relative humidity (H-H)	5 - 95 %
Fiber ethernet cabling technology	1000BASE-X
Harmonized System (HS) code	85176990

Weight and Dimensions

Depth	207 mm
Width	445 mm
Height	45 mm
Weight	2000 g