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NETGEAR M4100 Series User Manual

NETGEAR M4100 Series
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Configuration Examples
443
M4100 Series Managed Switch
A MSTP bridge can be configured to behave entirely as a RSTP bridge or a STP bridge. So,
an IEEE 802.1s bridge inherently also supports IEEE 802.1w and IEEE 802.1D.
The MSTP algorithm and protocol provide simple and full connectivity for frames assigned to
any given VLAN throughout a bridged LAN comprising arbitrarily interconnected networking
devices, each operating MSTP, STP, or RSTP. MSTP allows frames assigned to different
VLANs to follow separate paths, each based on an independent Multiple Spanning Tree
Instance (MSTI), within Multiple Spanning Tree (MST) Regions composed of LANs and or
MSTP bridges. These regions and the other bridges and LANs are connected into a single
Common Spanning Tree (CST). (IEEE DRAFT P802.1s/D13)
MSTP connects all bridges and LANs with a single Common and Internal Spanning Tree
(CIST). The CIST supports the automatic determination of each MST region, choosing its
maximum possible extent. The connectivity calculated for the CIST provides the CST for
interconnecting these regions, and an Internal Spanning Tree (IST) within each region. MSTP
ensures that frames with a given VLAN ID are assigned to one and only one of the MSTIs or
the IST within the region, that the assignment is consistent among all the networking devices
in the region and that the stable connectivity of each MSTI and IST at the boundary of the
region matches that of the CST. The stable active topology of the bridged LAN with respect to
frames consistently classified as belonging to any given VLAN thus simply and fully connects
all LANs and networking devices throughout the network, though frames belonging to
different VLANs can take different paths within any Region, per IEEE DRAFT P802.1s/D13.
All bridges, whether they use STP, RSTP, or MSTP, send information in configuration
messages through bridge protocol data units (BPDUs) to assign port roles that determine
each port’s participation in a fully and simply connected active topology based on one or
more spanning trees. The information communicated is known as the spanning tree priority
vector. The BPDU structure for each of these different protocols is different. A MSTP bridge
transmits the appropriate BPDU depending on the received type of BPDU from a particular
port.
An MST region comprises one or more MSTP bridges with the same MST configuration
identifier, using the same MSTIs,and without any bridges attached that cannot receive and
transmit MSTP BPDUs. The MST configuration identifier has the following components:
1. Configuration identifier format selector
2. Configuration name
3. Configuration revision level
4. Configuration digest: 16-byte signature of type HMAC-MD5 created from the MST
Configuration Table (a VLAN ID to MSTID mapping)
As there are multiple instances of Spanning Tree, there is an MSTP state maintained on a
per-port, per-instance basis (or on a per-port, per-VLAN basis, as any VLAN can be in one
and only one MSTI or CIST). For example, port A can be forwarding for instance 1 while
discarding for instance 2. The port states changed since IEEE 802.1D specification.
To support multiple spanning trees, a MSTP bridge must be configured with an unambiguous
assignment of VLAN IDs (VIDs) to spanning trees. This is achieved by ensure the following:
1. The allocation of VIDs to FIDs is unambiguous.
2. Each FID supported by the bridge is allocated to exactly one spanning tree instance.

Table of Contents

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Questions and Answers:

NETGEAR M4100 Series Specifications

General IconGeneral
ModelM4100 Series
Switch TypeManaged
Form FactorRack-mountable
Port Configuration24 or 48 ports
Ethernet Ports10/100/1000 Mbps
PoE SupportAvailable on some models (PoE and PoE+)
LayerLayer 2/Layer 3
ManagementWeb-based, CLI, SNMP
VLAN SupportYes
QoSYes
StackableYes
Ports24 or 48
Jumbo Frame SupportYes
Security FeaturesACL, 802.1X, RADIUS, TACACS+
Operating Temperature0° to 50° C (32° to 122° F)
Storage Temperature-20° to 70° C (-4° to 158° F)
Power SupplyInternal power supply

Summary

Get Started

Online Help

Access context-sensitive help within the switch's web interface for configuration assistance.

Web Management Interface Overview

Learn about the web-based interface for managing switch functions and features remotely.

Using SNMP

Configure SNMP groups and users for managing network devices and traps generated by the SNMP agent.

Configure System Information

System Configuration

Perform initial system configuration, including setting admin passwords and system identification details.

Define System Information

Define key system information like System Name, Location, and Contact for identification.

View Switch Statistics

Monitor switch performance by viewing statistics like packets received, transmitted, and errors.

Configure DHCP Server

Enable and configure the DHCP server, including pool settings and address exclusions for IP address assignment.

Configure Switching Information

VLAN Overview

Understand how VLANs segment networks, improve security, and manage traffic efficiently.

Configure VLAN Trunking

Configure switch port modes (Access, General, Trunk) to define port behavior for VLAN traffic.

Spanning Tree Protocol Overview

Learn how STP prevents network loops by providing a tree topology and ensuring single paths.

Configure IGMP Snooping Interface Settings

Configure IGMP snooping settings on specific interfaces to intelligently forward multicast traffic.

Routing

Manage the Routing Table

Configure static and local routes, defining network addresses, subnet masks, and next hop IP addresses.

Configure IP Settings

Configure routing parameters for the switch, including IP configuration, routing mode, and ICMP settings.

ARP Overview

Understand the Address Resolution Protocol (ARP) for translating IP addresses to MAC addresses.

Configure Quality of Service

QoS Overview

Understand Quality of Service settings for prioritizing and managing network traffic based on strict timing requirements.

Class of Service

Configure CoS queueing behavior, trust modes, and mapping tables for prioritizing different traffic types.

Differentiated Services (DiffServ)

Implement DiffServ for traffic classification, policy creation, and applying QoS treatment based on per-hop behaviors.

Configure DiffServ Policy

Associate traffic classes with policy statements and apply policies to interfaces for traffic conditioning.

Manage Device Security

Management Security Settings

Configure login password, RADIUS, TACACS, and authentication lists for secure device management access.

Configure RADIUS Settings

Set up RADIUS servers for centralized user authentication for web access and 802.1X.

Configure Port Security Settings

Implement port security by defining allowable MAC addresses to prevent unauthorized access on switch ports.

Access Control List Overview

Understand how ACLs control network access, manage traffic flow, and enhance security by defining packet-matching criteria.

Monitoring the System

View Port Statistics

View summarized per-port traffic statistics, including packets received, transmitted, and errors.

Logs Overview

Access system messages for events, faults, and configuration changes, with options for buffered, persistent, and console logs.

sFlow Overview

Configure sFlow agent information, receivers, and interfaces for network traffic monitoring and analysis.

Maintenance

Save Configuration

Save the current switch configuration to retain changes across reboots and power cycles.

Reboot a Switch

Perform a switch reboot, with options to save the current configuration before restarting.

Upload Files

Transfer files from the switch to a TFTP server or upload files from a USB device.

Configuration Examples

Virtual Local Area Networks

Learn how to configure VLANs, port membership, and tagged/untagged traffic for network segmentation.

802.1X Sample Configuration

Implement 802.1X-based port security requiring authentication for network access via a RADIUS server.

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