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Allied Telesis AT-GS950/8 manual Port Mirroring Overview

Models: AT-GS950/8

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Chapter 5: Port Mirroring

Port Mirroring Overview

The port mirroring feature allows you to unobtrusively monitor the ingress and egress traffic on a port on the switch by having the traffic copied to another switch port. By connecting a network analyzer to the port where the traffic is being copied to, you can monitor the traffic on the other port without impacting its performance or speed.

The port whose traffic you want to mirror is called the mirrored port. The port where the traffic will be copied to is called the mirroring or target port.

Observe the following guidelines when using this feature:

You can configure only one target port at a time.

The mirrored and mirroring ports must be on the same switch.

This feature copies both the ingress and egress traffic of the mirrored port.

The mirroring port (target port) cannot be used for normal Ethernet switching and cannot be part of a trunk.

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Allied Telesis AT-GS950/8 manual Port Mirroring Overview

Contents

User’s Guide For the AT-GS950/8 Layer 2 Gigabit Ethernet WebSmart Switch VersionManagement Software AT-S82Copyright 2007 Allied Telesis, Inc Contents Tagged Port Members Figures Figures This preface contains the following sections Prefaceˆ “Where to Find Web-based Guides” on page ˆ “Contacting Allied Telesis” on pageWhere to Find Web-based Guides PrefaceContacting Allied Telesis Online Support Email and Telephone Support Warranty ReturningManagement Software Updates Products Sales or Corporate InformationPreface Getting Started ChapterStarting a Management Session Figure 2. Main Page AT-S82 Management Software User’s GuideSaving Changes Quitting a Management Session To quit a management session, close the web browserChapter 1 Getting Started Basic Switch Parameters ChapterTo set the switch’s IP configuration, perform the following procedure a. In the IP Address field, enter the IP address. The default is Disabling or Enabling Ping Blocking EnabledDisabled Disabled Enabling or Disabling 802.1X Forwarding ControlEnabled Changing the Administrator’s Password Rebooting the Switch Resetting the Switch and Retaining the IP Address Figure 8. Reset System Page 2. Click Apply Downloading New Firmware Chapter Port Configurationˆ “Configuring Port Parameters” on page This chapter contains the following sectionConfiguring Port Parameters 3. From the State list, choose one of the following EnabledDisabled Enabled CopperFiber DisabledTrunking ChapterTrunking Overview Trunking Guidelines Trunking Algorithmˆ DAxorSA - destination MAC address/source MAC address distribution methods ˆ MAC-SA - source MAC addressˆ MAC-DA - destination MAC address AT-S82 Management Software User’s GuideMAC-DA Configuring the Trunking AlgorithmMAC-SA DAxorSASetting up the Trunk 5. Click Apply to implement your changes Port Mirroring ChapterPort Mirroring Overview Configuring Port Mirroring Chapter 5 Port Mirroring VLANs ChapterVLAN Features Increased Performance Improved Manageability Increased SecurityAT-S82 Management Software User’s Guide VLAN Overview VLAN Identifier VLAN Port MembersUntagged Port Members Incoming and Outgoing Tagged and Untagged FramesTagged Port Members Incoming FramesGuidelines for Creating a VLAN Working with VLANs Displaying all VLANs 2. Click Show All Static VLAN EntriesModifying a VLAN Deleting a VLAN Protected Ports VLAN The box for the Primary ports should be empty 4. Click Apply Figure 21. Protected Port Page2. Determine which ports will be the Primary ports AT-S82 Management Software User’s GuideChapter 6 VLANs Class of Service ChapterClass of Service Overview Mapping Ports to Egress QueuesIEEE 802.1p Priority Level Port Priority QueuePackets Port Egress QueueMaximum Number of exampleMapping Priorities to Queues Setting Up the Schedule Assigning Priority to Ports Chapter 7 Class of Service Spanning Tree Protocol STP ChapterSpanning Tree Overview Bridge Priority and the Root BridgeBridge Path Costs and Port CostsIncrement PriorityPort Speed Port SpeedPort Cost Port CostPort Forwarding Delay and Topology ChangesPort Priority Port SpeedHello Time and Bridge Protocol Data Units BPDUs Point-to-Point and Edge Ports Figure 26. Edge Port Spanning Tree and VLANs Chapter 8 Spanning Tree Protocol STP Configuring Spanning Tree When you select a value for maximum age, observe the following rules RSTPSTP Compatible EnabledDisabled Disabled Configuring STP Port SettingsEnabled Auto FalseTrue FalseChapter 8 Spanning Tree Protocol STP