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Netgear GS724Tv4 Software Administration Manual - Page 71

Interface Configuration, To con DHCP snooping interface settings, System, Services

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GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches Interface Configuration Use the DHCP Snooping Interface Configuration screen to view and configure each port as a trusted or untrusted port. Any DHCP responses received on a trusted port are forwarded. If a port is configured as untrusted, any DHCP (or BootP) responses received on that port are discarded.  To configure DHCP snooping interface settings: 1. Select System > Services > DHCP Snooping > Interface Configuration. 2. Select one or more ports or LAGs to configure. For information about how to select and configure one or more ports and LAGs, see Configuring Interface Settings on page 28. 3. From the Trust Mode list, select the desired trust mode. • Disabled. The interface is considered to be untrusted and could potentially be used to launch a network attack. DHCP server messages are checked against the bindings database. On untrusted ports, DHCP snooping enforces the following security rules: - DHCP packets from a DHCP server (DHCPOFFER, DHCPACK, DHCPNAK, DHCPRELEASEQUERY) are dropped. - DHCPRELEASE and DHCPDECLINE messages are dropped if the MAC address is in the snooping database but the binding's interface is other than the interface where the message was received. - DHCP packets are dropped when the source MAC address does not match the client hardware address if MAC address validation is globally enabled. • Enabled. The interface is considered to be trusted and forwards DHCP server messages without validation. 4. From the Logging Invalid Packets list, select the packet logging mode. When enabled, the DHCP snooping feature generates a log message when an invalid packet is received and dropped by the interface. 5. In the Rate Limit (pps) field, specify the rate limit value for DHCP snooping purposes. If the incoming rate of DHCP packets exceeds the value of this object for consecutively burst interval seconds, the port will be shut down. If this value is N/A, then the burst interval has no meaning, and rate limiting is disabled. 6. In the Burst Interval (secs) field, specify the burst interval value for rate limiting purposes on this interface. If the rate limit is N/A, then the burst interval has no meaning and the field displays N/A. 7. Click the Apply button. Configure System Information 71

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

Configure System Information

GS716Tv3, GS724Tv4, and GS748Tv5 Smart Switches

Interface Configuration

Use the DHCP Snooping Interface Configuration screen to view and configure each port as a

trusted or untrusted port. Any DHCP responses received on a trusted port are forwarded. If a

port is configured as untrusted, any DHCP (or BootP) responses received on that port are

discarded.



To configure DHCP snooping interface settings:

Select

System

Services

DHCP Snooping

Interface Configuration

Select one or more ports or LAGs to configure.

For information about how to select and configure one or more ports and LAGs, see

Configuring Interface Settings

on page 28.

From the Trust Mode list, select the desired trust mode.

•

Disabled

. The interface is considered to be untrusted and could potentially be used

to launch a network attack. DHCP server messages are checked against the bindings

database. On untrusted ports, DHCP snooping enforces the following security rules:

DHCP packets from a DHCP server (DHCPOFFER, DHCPACK, DHCPNAK,

DHCPRELEASEQUERY) are dropped.

DHCPRELEASE and DHCPDECLINE messages are dropped if the MAC address

is in the snooping database but the binding’s interface is other than the interface

where the message was received.

DHCP packets are dropped when the source MAC address does not match the

client hardware address if MAC address validation is globally enabled.

•

Enabled

. The interface is considered to be trusted and forwards DHCP server

messages without validation.

From the Logging Invalid Packets list, select the packet logging mode.

When enabled, the DHCP snooping feature generates a log message when an invalid

packet is received and dropped by the interface.

In the Rate Limit (pps) field, specify the rate limit value for DHCP snooping purposes.

If the incoming rate of DHCP packets exceeds the value of this object for consecutively

burst interval seconds, the port will be shut down. If this value is N/A, then the burst

interval has no meaning, and rate limiting is disabled.

In the Burst Interval (secs) field, specify the burst interval value for rate limiting purposes on

this interface.

If the rate limit is N/A, then the burst interval has no meaning and the field displays N/A.

Click the

Apply

button.