Moxa Technologies PT-7728 Using Port Trunking

PT-7728 User’s Manual Featured Functions

3-12

NOTE After restoring the factory default configuration, you will need to use the default network settings

to re-establish the web or Telnet console connection with the PT-7728.

Using Port Trunking

Link aggregation involves grouping links to into a link aggregation group. A MAC client can treat

link aggregation groups as if they were a single link.

The PT-7728’s port trunking feature allows devices to communicate by aggregating up to 4 trunk

groups, with a maximum of 8 ports for each group. If one of the 8 ports fails, the other seven ports

will automatically provide backup and share the traffic.

Port trunking can be used to combine up to 8 ports between two PT-7728 switches. If all ports on

both switch units are configured as 100BaseTX and they are operating in full duplex, the potential

bandwidth of the connection will be 1600 Mbps.

The Port Trunking Concept

Moxa has developed a proprietary port trunking protocol that provides the following benefits:

y More flexibility in setting up your network connections, since the bandwidth of a link can be

doubled, tripled, or quadrupled

y Redundancy — if one link is broken, the remaining trunked ports share the traffic within this

trunk group

y Load sharing — MAC client traffic may be distributed across multiple links

To avoid broadcast storms or loops in your network while configuring a trunk, first disable or

disconnect all ports that you want to add to the trunk or remove from the trunk. After you finish

configuring the trunk, enable or re-connect the ports.

If all ports on both switch units are configured as 100BaseTX and they are operating in full duplex

mode, the potential bandwidth of the connection will be up to 1.6 Gbps. This means that users can

double, triple, or quadruple the bandwidth of the connection by port trunking between two PT

series switches.

Each PT-7728 can set a maximum of 4 port trunking groups. When you activate port trunking,

certain settings on each port will be reset to factory default values or disabled:

y Communication redundancy will be reset

y 802.1Q VLAN will be reset

y Multicast Filtering will be reset

y Port Lock will be reset and disabled.

y Set Device IP will be reset

y Mirror will be reset

After port trunking has been activated, you may configure these items again for each trunking

ports.

Contents

Main Moxa PowerTrans Switch PT-7728 Users Manual www.moxa.com/product First Edition, February 2008 Moxa Inc. Moxa PowerTrans Switch PT-7728 Users Manual Copyright Notice Trademarks Disclaimer Table of Contents Page Page Overview Package Checklist Software Features Page Serial Console Configuration (115200, None, 8, 1, VT100) Page Configuration by Telnet Console Page Page Configuration by Web Browser Disabling Telnet and Browser Access Page Configuring Basic Settings System Identification Password Accessible IP Port Network Page Time Daylight Saving Time System File UpdateBy Remote TFTP Page System File UpdateBy Local Import/Export Factory Default Using Port Trunking The Port Trunking Concept Configuring Port Trunking Configuring SNMP SNMP Read/Write Settings Trap Settings Private MIB information Using Communication Redundancy The Turbo Ring Concept Page Ring Coupling Configuration Page Dual-Homing Configuration for Turbo Ring V2 Configuring Turbo Ring and Turbo Ring V2 Configuring Turbo Ring Page Configuring Turbo Ring V2 Page Page The STP/RSTP Concept What is STP? Page How STP Works Differences between RSTP and STP STP Example PT-7728 Users Manual Featured Functions 3-31 Using STP on a Network with Multiple VLANs Block 802.1Q tagged, 10BaseTx half-duplex Link camies VLAN1, 2 (path cost = 100) Configuring STP/RSTP Page Configuration Limits of RSTP/STP Using Traffic Prioritization The Traffic Prioritization Concept What is Traffic Prioritization? How Traffic Prioritization Works Page Configuring Traffic Prioritization QoS Classification CoS Mapping TOS/DiffServ Mapping Using Virtual LAN The Virtual LAN (VLAN) Concept What is a VLAN? Benefits of VLANs VLANs and the PowerTrans Managing a VLAN Communication Between VLANs Sample Applications of VLANs using PT-7728 Page Configuring Virtual LAN VLAN Settings VLAN Table Using Multicast Filtering The Concept of Multicast Filtering What is an IP Multicast? Benefits of Multicast Multicast Filtering Multicast Filtering and Moxa PowerTrans Switch IGMP Multicast Filtering GMRP (GARP Multicast Registration Protocol) Configuring IGMP Snooping IGMP Snooping Settings Add Static Multicast MAC Configuring GMRP GMRP Table Using Bandwidth Management Configuring Bandwidth Management Broadcast Storm Protection Traffic Rate Limiting Settings Using Port Access Control Static Port Lock IEEE 802.1X The IEEE 802.1X Concept Configuring IEEE 802.1X 802.1X Re-Authentication Local User Database Setup Port Access Control Table Using Auto Warning Configuring Email Warning Event Type Email Setup Configuring Relay Warning Event Setup Override relay alarm settings Warning List Using Line-Swap-Fast-Recovery Configuring Line-Swap Fast Recovery Using Set Device IP Configuring Set Device IP Using Diagnosis Mirror Port Ping Using Monitor Monitor by Switch Monitor by Port Using the MAC Address Table Using Event Log Using Syslog Page A A Page Page B B