TP-Link TL-SG2216 User Manual

it will be added to the
multicast address table with its member port time specified; if the receiving
port is already a member port, its member port time will be directly reset.
3. IGMP Leave Message
The host, running IGMPv1, does not send IGMP leave message when leaving a multicast group,
as a result, the switch can not get the leave information of the host momentarily. However, after
leaving the multicast group, the host does not send IGMP report message any more, so the switch
will remove the port from the corresponding multicast address table when its member port time
times out. The host, running IGMPv2 or IGMPv3, sends IGMP leave message when leaving a
multicast group to inform the multicast router of its leaving.
When receiving IGMP leave message, the switch will forward IGMP group-specific-query message
to check if other members in the multicast group of the port need this multicast and reset the
member port time to the leave time. When the leave time times out, the switch will remove the port
from the corresponding multicast group. If no other member is in the group after the port is
removed, the switch will send IGMP leave message to the router and remove the whole multicast
group.
 IGMP Snooping Fundamentals
1. Ports
Router Port: Indicates the switch port directly connected to the multicast router.
Member Port: Indicates a switch port connected to a multicast group member.
2. Timers
Router Port Time: Within the time, if the switch does not receive IGMP query message from the
router port, it will consider this port is not a router port any more. The default value is 300 seconds.
Member Port Time: Within the time, if the switch does not receive IGMP report message from the
member port, it will consider this port is not a member port any more. The default value is 260
seconds.
Leave Time: Indicates the interval between the switch receiving a leave message from a host and
the switch removing the host from the multicast groups. The default value is 1 second.
The IGMP Snooping function can be implemented on Snooping Config, Port Config, VLAN
Config and Multicast VLAN pages.
8.1.1 Snooping Config
To configure the IGMP Snooping on the switch, please firstly configure IGMP global configuration
and related parameters on this page.
If the multicast address of the received multicast data is not in the multicast address table, the
switch will broadcast the data in the VLAN. When Unknown Multicast Discard feature is enabled,
the switch drops the received unknown multicast so as to save the bandwidth and enhance the
process efficiency of the system. Please configure this feature appropriate to your needs.
Choose the menu Multicast→IGMP Snooping→Snooping Config to load the following page.
84

TP-Link TL-SG2216 Specifications

General

Jumbo frames	10000
Forwarding rate	23.8 Mpps
MAC address table	8000 entries
Jumbo frames support	Yes
Packet buffer memory	4 MB
Supported data transfer rates	10/100/1000 Mb/s
10G support	No
Number of VLANs	512
Networking standards	IEEE 802.1D, IEEE 802.1p, IEEE 802.1Q, IEEE 802.1s, IEEE 802.1w, IEEE 802.3ab, IEEE 802.3i, IEEE 802.3u, IEEE 802.3x, IEEE 802.3z
Virtual LAN features	Multicast VLAN, Tagged VLAN, Voice VLAN
DHCP features	DHCP client
Security algorithms	SSH, SSL/TLS
Switch type	Managed
Switch layer	L2
Combo SFP ports 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
Power source	AC
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power supply included	-
Form factor	1U
Certification	CE, FCC, RoHS
Product color	Black
Minimum system requirements	Microsoft® Windows® XP, Vista™ or Windows 7, Windows 8, MAC® OS, NetWare®, UNIX® or Linux.
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 90 %
Operating relative humidity (H-H)	10 - 90 %
Cabling technology	10BASE-T/100BASE-TX/1000Base-T
Package depth	250 mm
Package width	528 mm
Package height	80 mm
Package weight	2600 g

Weight and Dimensions

Depth	180 mm
Width	440 mm
Height	44 mm