Allied Telesis C613-02013-00 manual Forwarding Process, Enable Switch Learning, Show Switch

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Layer 2 Switching

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ENABLE SWITCH LEARNING

If the ageing timer for an entry in the Forwarding Database expires before another frame with the same source address is received, the entry is removed from the Forwarding Database. This prevents the Forwarding Database from being filled up with information about stations that are inactive or have been disconnected from the network, while ensuring that entries for active stations are kept alive in the Forwarding Database. By default, the ageing timer is enabled, and it can be disabled or enabled using the commands:

ENABLE SWITCH AGEINGTIMER

DISABLE SWITCH AGEINGTIMER

If switch learning is disabled and the ageing timer has aged out all dynamically learned filter entries, only statically entered MAC source addresses will be used to decide which packets to forward or discard. If the switch finds no matching entries in the Forwarding Database during the Forwarding Process, then all switch ports in the VLAN will be flooded with the packet, except the port on which the packet was received.

The default value of the ageing timer is 300 seconds (5 minutes), and this can be modified using the command:

SET SWITCH AGEINGTIMER=10..1000000

The Forwarding Database relates a station’s (source) address to a port on the switch, and is used by the switch to determine from which port (if any) to transmit frames with a destination MAC address matching the entry in the station map.

To display the contents of the Forwarding Database, use the command:

SHOW SWITCH FDB [ADDRESS=macadd] [DISCARD={SOURCEDESTINATION}] [HIT={YESNO}] [L3={YESNO}] [PORT={portlistALL}] [STATUS={STATICDYNAMIC}] [VLAN={vlanname1..4094}]

To display general switch settings, including settings for switch learning and the switch aging timer, use the command:

SHOW SWITCH

The Forwarding Process

The Forwarding Process forwards received frames that are to be relayed to other ports in the same VLAN, filtering out frames on the basis of information contained in the station map and on the state of the ports. If a frame is received on the port for a destination in a different VLAN, it is either Layer 3 switched if it is an IP packet, or looked up in the Layer 3 routing tables (see the Rapier Switch Software Reference.)

Forwarding occurs only if the port on which the frame was received is in the Spanning Tree ‘Forwarding’ state. The destination address is then looked up in the Forwarding Database for the VLAN. If the destination address is not found, the switch floods the frame on all ports in the VLAN except the port on which the frame was received. If the destination address is found, the switch discards the frame if the port is not in the STP ‘Forwarding’ state, if the destination address is on the same port as the source address, or if there is a static filter entry for the destination address set to DISCARD (“Layer 2 Filtering” on page 46). Otherwise, the frame is forwarded on the indicated port.

Rapier Switch Software Release 2.2.1 C613-02013-00 Rev A

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Contents User Guide Page Contents Documentation Roadmap Chapter Why Read This User Guide?Technical support Where To Find More InformationSwitching Features What Can the Rapier Switch Do?Routing Features Advanced Feature Licence AT-RPFL3Upgrade Optional Features Command Line Interface Simple SwitchingEntering Commands Giving the Switch an IP AddressSET Password LoggingEnable AT-RPFL3Upgrade Feature Licence Enable GUIEnabling the GUI Starting the GUI Graphical User InterfaceNavigating Monitoring User Privileges File SubsystemShow File Show System Online CLI HelpSaving Configuration Entered with the GUI Configuration ScriptsDram NoneEditor Saving Configuration Entered with the CLIInstall Information Show Install Delete InstallReleases and Patches into the Switch Load METHOD=HTTP DESTINATION=FLASH Example Install Software Upgrade for Rapier SwitchEnable Snmp Snmp and MIBsShow Load Show Snmp Enable Snmp AuthenticatetrapEnabling and Disabling Switch Ports Switch PortsISO8802-3 Csmacd EnabledOFF STPAcceptable Frames Types Autonegotiation of Port Speed and Duplex ModeSELECT=MACSRCMACDESTMACBOTHIPSRCIPDESTIPBOTH Port TrunkingShow VLAN=ALL Packet Storm Protection Port Mirroring Enable Switch Mirror Disable Switch Mirror ADD Switch L3FILTER MatchINTRUSIONACTION=NONEDISCARDTRAPDISABLE Port securityVirtual LANs Example output from the Show Switch Port Intrusion commandRapier Switch User Guide Creating VLANs Without Vlan Tags Static and dynamic VLANsMarketing Vlan Switch Training Vlan Trunk ports GarpParameter Meaning Vlan TaggingFRAME=TAGGEDUNTAGGED Tagged VLANs Summary of Vlan Tagging RulesLayer 2 Switching Process Generic Vlan Registration Protocol GvrpIngress Rules Learning Process Disable Switch LearningEnable Switch Ageingtimer Disable Switch Ageingtimer Enable Switch LearningSET Switch AGEINGTIMER=10..1000000 Show SwitchLayer 2 Filtering Example output from the Show Switch Filter commandFRAME=UNTAGGEDTAGGED Egress RulesQuality of Service SET Switch QOS=P1,P2,P3,P4,P5,P6,P7,P8Show Switch QOS Spanning Tree Port States Spanning Tree Protocol STPConfiguring STP SET STP=stpnameALL PRIORITY=0..65535 Example output from the Show STP command Parameters To display STP port information, use the command TCN Bpdu To show STP counters, use the commandIgmp Snooping Interfaces to Layer 3 ProtocolsPurge STP INTERFACE=VLAN3Enable IP Igmp Disable IP Igmp SET IP Igmp TIMEOUT=1..65535 QUERYINTERVAL=1..65535Show IP Igmp Group List TriggersEvent Page Show IP Interface Internet Protocol IPRouting Information Protocol RIP IP MulticastingNovell IPX Show IPX CircuitUplink AppleTalk Enable RsvpResource Reservation Protocol Rsvp ActiveRAW Show Rsvp Interface

C613-02013-00 specifications

The Allied Telesis C613-02013-00 is a versatile and powerful network switch designed to meet the demands of modern networking environments. This device is part of Allied Telesis's extensive range of networking solutions, catering to both enterprise and industrial applications. It is engineered for high performance, reliability, and ease of management, making it a suitable choice for organizations that require robust connectivity solutions.

One of the main features of the C613-02013-00 is its support for advanced Layer 2 switching capabilities. This provides businesses with the necessary tools to manage and direct network traffic efficiently. The switch includes support for VLAN (Virtual Local Area Network) technology, which allows for the segmentation of network traffic, enhancing both security and performance. With VLANs, organizations can isolate critical workloads and improve network management while ensuring that sensitive information is protected from unauthorized access.

Another key characteristic of the C613-02013-00 is its extensive support for Power over Ethernet (PoE). This feature enables the switch to deliver electrical power along with data over standard Ethernet cabling. This is particularly beneficial for powering devices such as IP cameras, wireless access points, and VoIP phones, reducing the need for additional power supply infrastructure. With PoE capabilities, the switch simplifies installation and enhances flexibility in deploying network devices.

The C613-02013-00 also boasts advanced network management features, including support for SNMP (Simple Network Management Protocol) for efficient monitoring and troubleshooting. This ensures that network administrators can maintain optimal performance and quickly address any issues that arise. Additionally, the switch supports network redundancy features like Rapid Spanning Tree Protocol (RSTP), which helps to prevent network loops and minimizes downtime.

In terms of physical characteristics, the C613-02013-00 is designed for durability and ease of deployment in various environments. Its compact form factor allows for effective space utilization in data centers and network closets. Moreover, it features a fanless design, making it suitable for deployment in noise-sensitive environments such as offices and classrooms.

In summary, the Allied Telesis C613-02013-00 is a robust network switch offering advanced features such as Layer 2 switching, PoE support, and comprehensive network management capabilities. Its design and performance make it an excellent choice for businesses seeking to enhance their network infrastructure with reliable and secure connectivity solutions.
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