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VLANs, VLAN Configuration

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GS516TP Gigabit Smart Switches VLANs Adding virtual LAN (VLAN) support to a Layer 2 switch offers some of the benefits of both bridging and routing. Like a bridge, a VLAN switch forwards traffic based on the Layer 2 header, which is fast. Like a router, it partitions the network into logical segments, which provides better administration, security, and management of multicast traffic. By default, all ports on the switch are in the same broadcast domain. VLANs electronically separate ports on the same switch into separate broadcast domains so that broadcast packets are not sent to all the ports on a single switch. When you use a VLAN, users are grouped by logical function instead of physical location. Each VLAN in a network has an associated VLAN ID, which displays in the IEEE 802.1Q tag in the Layer 2 header of packets transmitted on a VLAN. An end station might omit the tag, or the VLAN portion of the tag, in which case the first switch port to receive the packet can either reject it or insert a tag using its default VLAN ID. A given port can handle traffic for more than one VLAN, but it can support only one default VLAN ID. From the VLAN menu, you can access the features described in the following sections: • VLAN Configuration • VLAN Membership Configuration • Port VLAN ID Configuration VLAN Configuration Use the VLAN Configuration screen to define VLAN groups stored in the VLAN membership table. The switch supports up to 256 VLANs. VLAN 1 is created by default, and all ports are untagged members.  To configure VLANs: 1. Select Switching > VLAN > Basic > VLAN Configuration. 2. To add a VLAN, configure the VLAN ID, name, and type, and click ADD. • VLAN ID. Specify the VLAN Identifier for the new VLAN. You can enter data in this field only when you are creating a VLAN. The range of the VLAN ID is 2-4093. • VLAN Name. Use this optional field to specify a name for the VLAN. It can be up to 32 alphanumeric characters long, including blanks. The default is blank. VLAN ID 1 is always named Default. • VLAN Type. This field identifies the type of the VLAN you are configuring. You cannot change the type of the default VLAN (VLAN ID = 1) because the type is always Default. When you create a VLAN on this screen, its type is Static. Voice VLAN (2) and Auto-Video VLAN (3) are created by default. To modify settings for a VLAN, select the check box next to the VLAN ID, change the desired information, and click APPLY.  Configuration changes take effect immediately. 64

Section	Page
GS516TP Gigabit 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
Switch Discovery in a Network Without a DHCP Server	15
Configure the Network Settings on the Administrative System	17
Access the Management Interface from the Web	19
Understand the User Interface	19
Use SNMP	24
Interface Naming Convention	25
2. Configuring System Information	26
Management	27
System Information	27
IP Configuration	28
IPv6 Network Configuration	29
IPv6 Network Neighbors	30
Time	31
DNS	34
Green Ethernet Configuration	35
PoE	39
PoE Global Configuration	41
PoE Port Configuration	41
PoE PD Port Status	42
Timer Global Configuration	43
SNMP	44
SNMP v1/v2	44
Trap Flags	45
SNMP Supported MIBs	46
SNMP v3 User Configuration	46
LLDP	47
LLDP Configuration	47
LLDP Port Settings	48
LLDP-MED Network Policy	49
LLDP-MED Port Settings	49
Local Information	50
Neighbors Information	51
Services—DHCP Snooping	55
DHCP Snooping Global Configuration	55
DHCP Snooping Interface Configuration	55
DHCP Snooping Binding Configuration	56
DHCP Snooping Persistent Configuration	57
3. Configuring Switching Information	58
Ports	59
Global Configuration	59
Port Configuration	59
Link Aggregation Groups	61
LAG Configuration	61
LAG Membership	62
LACP Configuration	63
LACP Port Configuration	63
VLANs	64
VLAN Configuration	64
VLAN Membership Configuration	65
Port VLAN ID Configuration	66
Voice VLAN	67
Voice VLAN Properties	67
Voice VLAN Port Setting	67
Voice VLAN OUI	68
Auto-VoIP Configuration	69
Spanning Tree Protocol	70
STP Configuration	70
CST Configuration	72
CST Port Configuration	73
CST Port Status	74
Rapid STP	75
MST Configuration	75
MST Port Configuration	76
Multicast	79
MFDB	79
Auto-Video Configuration	80
IGMP Snooping	81
IGMP Snooping Querier	84
MLD Snooping	86
Static Multicast Address	88
Forwarding Database	91
Address Table	91
Dynamic Address Configuration	92
Static MAC Address	92
4. Configuring Routing	93
Configure IP Settings	94
Configure VLAN Routing	95
VLAN Routing Wizard	95
Configure VLAN Routing	96
Configure and View Routes	97
Configure ARP	99
ARP Cache	100
ARP Entry Configuration	100
Global ARP Configuration	101
ARP Entry Management	102
5. Configure Quality of Service	103
Class of Service	104
Basic CoS Configuration	104
CoS Interface Configuration	105
Queue Configuration	105
802.1p to Queue Mapping	106
DSCP to Queue Mapping	107
Differentiated Services	108
Defining DiffServ	108
Diffserv Configuration	109
DSCP Violate Action Mapping	109
Class Configuration	110
IPv6 Class Configuration	111
Policy Configuration	112
Service Configuration	114
Service Statistics	114
6. Managing Device Security	116
Management Security Settings	117
Change Password	117
Configure RADIUS Settings	117
Configure TACACS+	120
Authentication List Configuration	121
Configure Management Access	124
HTTP Configuration	124
Secure HTTP Configuration	124
Certificate Management	125
Access Control	125
Port Authentication	127
802.1x Configuration	127
Port Authentication	128
Port Summary	130
Traffic Control	132
Storm Control	132
Port Security Interface Configuration	133
Security MAC Address	133
Protected Ports	134
Configure Access Control Lists	135
ACL Wizard	135
MAC ACL	138
MAC Rules	138
MAC Binding Configuration	139
MAC Binding Table	140
IP ACL	141
IP Rules	141
IP Extended Rules	142
IPv6 ACL	144
IPv6 Rules	145
IP Binding Configuration	146
IP Binding Table	147
7. Monitoring the System	148
Ports	149
Switch Statistics	149
Port Statistics	150
Port Detailed Statistics	151
EAP Statistics	154
Cable Test	155
Logs	157
Buffered Logs	157
Server Log	158
Trap Logs	159
Mirroring	160
System Resources Utilization	161
8. Maintenance	162
Reset	163
Device Reboot	163
Factory Default	163
Upload a File from the Switch	164
TFTP File Upload	164
HTTP File Upload	165
Download a File to the Switch	166
TFTP File Download	166
HTTP File Download	167
File Management	169
Dual Image Configuration	169
Dual Image Status	169
Troubleshooting	171
Ping	171
Ping IPv6	172
Traceroute	172
Remote Diagnostics	173
9. Help	174
Online Help	175
Support	175
User Guide	175
Registration	176
A. Hardware Specifications and Default Values	178
Switch Features and Defaults	179
B. Configuration Examples	182
Virtual Local Area Networks (VLANs)	183
Sample VLAN Configuration	184
Access Control Lists (ACLs)	185
Sample MAC ACL Configuration	185
Sample Standard IP ACL Configuration	186
Differentiated Services (DiffServ)	188
Class	188
DiffServ Traffic Classes	189
Create Policies	189
Sample DiffServ Configuration	190
802.1x	193
Sample 802.1x Configuration	194
MSTP	196
Sample MSTP Configuration	197
Configure VLAN Routing with Static Route	200
VLAN Routing Overview	200
Sample VLAN Routing Configuration	200
C. Notification of Compliance	201

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GS516TP Gigabit Smart Switches

VLANs

Adding virtual LAN (VLAN) support to a Layer 2 switch offers some of the benefits of both

bridging and routing. Like a bridge, a VLAN switch forwards traffic based on the Layer 2

header, which is fast. Like a router, it partitions the network into logical segments, which

provides better administration, security, and management of multicast traffic.

By default, all ports on the switch are in the same broadcast domain. VLANs electronically

separate ports on the same switch into separate broadcast domains so that broadcast

packets are not sent to all the ports on a single switch. When you use a VLAN, users are

grouped by logical function instead of physical location.

Each VLAN in a network has an associated VLAN ID, which displays in the IEEE 802.1Q tag

in the Layer 2 header of packets transmitted on a VLAN. An end station might omit the tag, or

the VLAN portion of the tag, in which case the first switch port to receive the packet can either

reject it or insert a tag using its default VLAN ID. A given port can handle traffic for more than

one VLAN, but it can support only one default VLAN ID.

From the VLAN menu, you can access the features described in the following sections:

•

VLAN Configuration

•

VLAN Membership Configuration

•

Port VLAN ID Configuration

VLAN Configuration

Use the VLAN Configuration screen to define VLAN groups stored in the VLAN membership

table. The switch supports up to 256 VLANs. VLAN 1 is created by default, and all ports are

untagged members.



To configure VLANs:

Select

Switching > VLAN > Basic > VLAN Configuration

To add a VLAN, configure the VLAN ID, name, and type, and click

ADD

•

VLAN ID

. Specify the VLAN Identifier for the new VLAN. You can enter data in this

field only when you are creating a VLAN. The range of the VLAN ID is 2–4093.

•

VLAN Name

. Use this optional field to specify a name for the VLAN. It can be up to

32 alphanumeric characters long, including blanks. The default is blank. VLAN ID 1 is

always named Default.

•

VLAN Type

. This field identifies the type of the VLAN you are configuring. You cannot

change the type of the default VLAN (VLAN ID = 1) because the type is always

Default. When you create a VLAN on this screen, its type is Static. Voice VLAN (2)

and Auto-Video VLAN (3) are created by default.

To modify settings for a VLAN, select the check box next to the VLAN ID, change the desired

information, and click

APPLY

Configuration changes take effect immediately.