User Manual
Table Of Contents
- S350 Series 24-Port (PoE+) and 48-Port Gigabit Ethernet Smart Switches with 2 or 4 SFP Ports
- Contents
- 1 Get Started
- Available Publications
- Switch Management and Discovery Overview
- Options to Change the Default IP Address of the Switch
- Discover or Change the Switch IP Address
- About the User Interfaces
- Access the Local Browser Interface
- Change the Language of the Local Browser Interface
- Use the Device View of the Local Browser Interface
- Interface Naming Conventions
- Configure Interface Settings
- Context-Sensitive Help and Access to the Support WebSite
- Access the User Manual Online
- Register Your Product
- 2 Configure System Information
- 3 Configure Switching
- Configure the Port Settings and Maximum Frame Size
- Configure Link Aggregation Groups
- Configure LAG Settings
- Configure LAG Membership
- Set the LACP System Priority
- Set the LACP Port Priority Settings
- Configure VLANs
- Configure VLAN Settings
- Configure VLAN Membership
- View the VLAN Status
- Configure Port PVID Settings
- Configure a MAC-Based VLAN
- Configure Protocol-Based VLAN Groups
- Configure Protocol-Based VLAN Group Membership
- Configure a Voice VLAN
- Configure Auto-VoIP
- Configure Spanning Tree Protocol
- Configure Multicast
- View, Search, or Clear the MFDB Table
- View the MFDB Statistics
- Configure the Auto-Video Multicast Settings
- About IGMP Snooping
- Configure IGMP Snooping
- Configure IGMP Snooping for Interfaces
- View, Search, or Clear the IGMP Snooping Table
- Configure IGMP Snooping for VLANs
- Modify IGMP Snooping Settings for a VLAN
- Disable IGMP Snooping on a VLAN
- Configure a Multicast Router Interface
- Configure a Multicast Router VLAN
- IGMP Snooping Querier Overview
- Configure an IGMP Snooping Querier
- Configure an IGMP Snooping Querier for VLANs
- Display IGMP Snooping Querier for VLAN Status
- View, Search, and Manage the MAC Address Table
- Configure Layer 2 Loop Protection
- 4 Configure Quality of Service
- 5 Manage Device Security
- Configure the Management Security Settings
- Configure Management Access
- Configure Port Authentication
- Set Up Traffic Control
- Configure Access Control Lists
- Use the ACL Wizard to Create a Simple ACL
- Configure a Basic MAC ACL
- Configure MAC ACL Rules
- Configure MAC Bindings
- View or Delete MAC ACL Bindings in the MAC Binding Table
- Configure a Basic or Extended IP ACL
- Configure Rules for a Basic IP ACL
- Configure Rules for an Extended IP ACL
- Configure IP ACL Interface Bindings
- View or Delete IP ACL Bindings in the IP ACL Binding Table
- 6 Monitor the System
- 7 Maintenance
- A Configuration Examples
- B Specifications and Default Settings
S350 Series 24-Port (PoE+) and 48-Port Gigabit Ethernet Smart Switches
Configure System Information User Manual99
Configure DHCP Snooping
DHCP snooping is a useful feature that provides security by filtering untrusted DHCP
messages and by building and maintaining a DHCP snooping binding table. An untrusted
message is a message that is received from outside the network or firewall and that can
cause traffic attacks within your network. The DHCP snooping binding table contains the
MAC address, IP address, lease time, binding type, VLAN number, and interface information
that corresponds to the local untrusted interfaces of a switch. An untrusted interface is an
interface that is configured to receive messages from outside the network or firewall. A
trusted interface is an interface that is configured to receive only messages from within the
network.
DHCP snooping acts like a firewall between untrusted hosts and DHCP servers. It also
provides way to differentiate between untrusted interfaces connected to the end user and
trusted interfaces connected to the DHCP server or another switch.
Configure the Global DHCP Snooping Settings
You can view and configure the global settings for DHCP snooping.
To configure the global DHCP snooping settings:
1. Connect your computer to the same network as the switch.
You can use a WiFi or wired connection to connect your computer to the network, or
connect directly to a switch that is off-network using an Ethernet cable.
2. Launch a web browser.
3. In the address field of your web browser, enter the IP address of the switch.
Network Policies
Application Type The media application type associated with the policy advertised by the
remote device.
VLAN ID The VLAN ID associated with the policy.
VLAN Type Specifies whether the VLAN associated with the policy is tagged or untagged.
User Priority The priority associated with the policy.
DSCP The DSCP associated with a particular policy type.
LLDP Unknown TLVs
Type The unknown TLV type field.
Value The unknown TLV value field.
Field Description