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Netgear GS724Tv4 Software Administration Manual - Page 110

Auto-Video, IGMP Snooping, To con Auto-Video, Switching, Multicast, Disable, Enable, Apply

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GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches Auto-Video Use this screen to configure the Auto-Video parameters.  To configure Auto-Video: 1. Select Switching > Multicast > Auto-Video. 2. Select one of the following radio buttons: • Select the Disable radio button to globally disable Auto-Video administrative mode for the switch. • Select the Enable radio button to globally enable Auto-Video administrative mode for the switch. The Auto-Video VLAN field shows the number of Auto-configured IGMP snooping VLANs. 3. Click the Apply button. IGMP Snooping Internet Group Management Protocol (IGMP) snooping is a feature that allows a switch to forward multicast traffic intelligently on the switch. Multicast IP traffic is traffic that is destined to a host group. Host groups are identified by class D IP addresses, which range from 224.0.0.0 to 239.255.255.255. Based on the IGMP query and report messages, the switch forwards traffic only to the ports that request the multicast traffic. This prevents the switch from broadcasting the traffic to all ports and possibly affecting network performance. A traditional Ethernet network can be separated into different network segments to prevent placing too many devices onto the same shared media. Bridges and switches connect these segments. When a packet with a broadcast or multicast destination address is received, the switch forwards a copy into each of the remaining network segments in accordance with the IEEE MAC Bridge standard. Eventually, the packet is made accessible to all nodes connected to the network. This approach works well for broadcast packets that are intended to be seen or processed by all connected nodes. In the case of multicast packets, however, this approach could lead to less efficient use of network bandwidth, particularly when the packet is intended for only a small number of nodes. Packets are flooded into network segments where no node has any interest in receiving the packet. While nodes rarely incur any processing overhead to filter packets addressed to unrequested group addresses, they are unable to transmit new packets onto the shared media for the period of time that the multicast packet is flooded. The problem of wasting bandwidth is even worse when the LAN segment is not shared, for example in full-duplex links. Allowing switches to snoop IGMP packets is a creative effort to solve this problem. The switch uses the information in the IGMP packets as they are being forwarded throughout the network to determine which segments should receive packets directed to the group address. Configuring Switching 110

Section	Page
GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches	1
Contents	3
1. Getting Started	9
Getting Started with the NETGEAR Switch	10
Switch Management Interface	11
Connect the Switch to the Network	12
Discover a Switch in a Network with a DHCP Server	13
Discover a Switch in a Network without a DHCP Server	15
Configure the Network Settings on the Administrative System	16
Access the Management Interface from a Web Browser	19
Understand the User Interfaces	19
Use the Web Interface	19
Use SNMPv3	26
Interface Naming Convention	27
Configuring Interface Settings	28
Online Help	33
Support	33
User Guide	33
Registration	34
2. Configure System Information	35
Management	36
System Information	36
IP Configuration	37
IPv6 Network Configuration	39
IPv6 Network Neighbor	40
Time	41
Denial of Service	46
DNS	48
Green Ethernet	50
License	55
SNMP	56
Configure the SNMPv1/v2 Community	56
LLDP	59
LLDP Configuration	60
LLDP Port Settings	61
LLDP-MED Network Policy	62
LLDP-MED Port Settings	63
Local Information	63
Neighbors Information	66
Services	70
DHCP Snooping	70
Statistics	74
Dynamic ARP Inspection	75
3. Configuring Switching	80
Ports	81
Port Configuration	81
Flow Control	82
Link Aggregation Groups	83
LAG Configuration	83
LAG Membership	85
LACP Configuration	86
LACP Port Configuration	86
VLANs	87
Basic VLAN Configuration	88
VLAN Membership Configuration	89
VLAN Status	90
Port VLAN ID Configuration	91
MAC-Based VLAN	92
Protocol-Based VLAN Group Configuration	93
Protocol-Based VLAN Group Membership	94
Voice VLAN	94
Auto-VoIP Configuration	95
Configure Protocol-Based Auto VoIP Settings	95
OUI-Based Properties	96
Port Settings	96
OUI Table	97
Spanning Tree Protocol	98
STP Configuration	99
CST Configuration	100
CST Port Configuration	101
CST Port Status	102
Rapid STP	103
MST Configuration	104
MST Port Configuration	105
STP Statistics	107
Multicast	108
MFDB Table	108
MFDB Statistics	109
Auto-Video	110
IGMP Snooping	110
IGMP Snooping Querier	115
MLD Snooping	117
MVR Configuration	123
MVR Configuration	124
MVR Group Configuration	125
MVR Interface Configuration	126
MVR Group Membership	126
MVR Statistics	127
Address Table	128
MAC Address Table	128
Dynamic Address Configuration	129
Static MAC Address	130
Multiple Registration Protocol Configuration	131
MRP Configuration	133
MRP Port Settings	134
MMRP Statistics	135
MVRP Statistics	136
MSRP Statistics	137
MSRP Reservation Parameters	138
Qav Parameters	139
MSRP Streams Information	140
802.1AS	142
802.1AS Configuration	142
802.1AS Port Settings	143
802.1AS Statistics	145
4. Configuring Routing	147
Configure IP Settings	148
IP Configuration	148
IP Statistics	149
Configure VLAN Routing	152
VLAN Routing Wizard	152
VLAN Routing Configuration	153
Configure Router Discovery	154
Configure and View Routes	155
Configure ARP	157
ARP Cache	158
Create a Static ARP Entry	159
Configure Global ARP Settings	159
Remove an ARP Entry From the ARP Cache	160
5. Configuring Quality of Service	161
Class of Service	162
CoS Configuration	162
CoS Interface Configuration	164
Interface Queue Configuration	165
802.1p to Queue Mapping	166
DSCP to Queue Mapping	166
Differentiated Services	167
Defining DiffServ	167
Diffserv Configuration	168
Class Configuration	169
IPv6 Class Configuration	172
Policy Configuration	173
Service Configuration	176
Service Statistics	176
6. Managing Device Security	177
Management Security Settings	178
Change Password	178
RADIUS Configuration	179
Configure TACACS+	183
Authentication List Configuration	185
Configuring Management Access	188
HTTP Configuration	188
Secure HTTP Configuration	189
Certificate Management	190
Certificate Download	190
Access Control	192
Port Authentication	194
802.1X Configuration	194
Port Authentication	195
Port Summary	198
Client Summary	199
Traffic Control	200
MAC Filter Configuration	200
MAC Filter Summary	201
Storm Control	202
Port Security Configuration	203
Port Security Interface Configuration	203
Security MAC Address	204
Protected Ports Membership	205
Configure Access Control Lists	206
ACL Wizard	207
MAC ACL	210
MAC Rules	211
MAC Binding Configuration	213
MAC Binding Table	214
IP ACL	215
IP Rules	216
IP Extended Rules	218
IPv6 ACL	221
IPv6 Rules	222
IP Binding Configuration	224
IP Binding Table	225
VLAN Binding Table	225
7. Monitoring the System	227
Ports	227
Switch Statistics	228
Port Statistics	230
Port Detailed Statistics	231
EAP Statistics	237
Cable Test	238
Logs	239
Memory Logs	240
Server Log	242
Trap Logs	244
Event Logs	245
Mirroring	245
8. Maintenance	247
Reset	247
Device Reboot	247
Factory Default	248
Upload	248
TFTP File Upload	249
HTTP File Upload	250
Download	251
TFTP File Download	251
HTTP File Download	253
File Management	254
Copy	254
Dual Image Configuration	255
Dual Image Status	256
9. Troubleshooting	257
Troubleshooting Configuration Menu	257
Ping	257
Ping IPv6	258
TraceRoute IPv4	259
TraceRoute IPv6	260
Troubleshooting Chart	261
A. Configuration Examples	262
Virtual Local Area Network Configuration Example	263
Access Control Lists (ACLs)	266
MAC ACL Configuration Example	266
Standard IP ACL Configuration Example	268
Differentiated Services	269
Class	269
DiffServ Traffic Classes	270
Creating Policies	270
DiffServ Configuration Example	272
802.1X Configuration Example	273
MSTP	276
MSTP Configuration Example	278
VLAN Routing Interface Configuration Example	280
B. Hardware Specifications and Default Values	282
Switch Specifications	282
Switch Features and Defaults	283

Match case Limit results 1 per page

Configuring Switching

110

GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches

Auto-Video

Use this screen to configure the Auto-Video parameters.



To configure Auto-Video:

Select

Switching

Multicast

Auto-Video

Select one of the following radio buttons:

•

Select the

Disable

radio button to globally disable Auto-Video administrative mode for

the switch.

•

Select the

Enable

radio button to globally enable Auto-Video administrative mode for

the switch.

The Auto-Video VLAN field shows the number of Auto-configured IGMP snooping

VLANs.

Click the

Apply

button.

IGMP Snooping

Internet Group Management Protocol (IGMP) snooping is a feature that allows a switch to

forward multicast traffic intelligently on the switch. Multicast IP traffic is traffic that is destined

to a host group. Host groups are identified by class D IP addresses, which range from

224.0.0.0 to 239.255.255.255. Based on the IGMP query and report messages, the switch

forwards traffic only to the ports that request the multicast traffic. This prevents the switch

from broadcasting the traffic to all ports and possibly affecting network performance.

A traditional Ethernet network can be separated into different network segments to prevent

placing too many devices onto the same shared media. Bridges and switches connect these

segments. When a packet with a broadcast or multicast destination address is received, the

switch forwards a copy into each of the remaining network segments in accordance with the

IEEE MAC Bridge standard. Eventually, the packet is made accessible to all nodes

connected to the network.

This approach works well for broadcast packets that are intended to be seen or processed by

all connected nodes. In the case of multicast packets, however, this approach could lead to

less efficient use of network bandwidth, particularly when the packet is intended for only a

small number of nodes. Packets are flooded into network segments where no node has any

interest in receiving the packet. While nodes rarely incur any processing overhead to filter

packets addressed to unrequested group addresses, they are unable to transmit new packets

onto the shared media for the period of time that the multicast packet is flooded. The problem

of wasting bandwidth is even worse when the LAN segment is not shared, for example in

full-duplex links.

Allowing switches to snoop IGMP packets is a creative effort to solve this problem. The

switch uses the information in the IGMP packets as they are being forwarded throughout the

network to determine which segments should receive packets directed to the group address.