Port Type and Link Type, Edge Port | Juniper Networks EX2500

EX2500 Ethernet Switch Configuration Guide

Port Type and Link Type

Spanning tree configuration includes the following parameters to support RSTP and

MSTP: edge port and link type.

Edge Port

A port that does not connect to a bridge is called an edge port. Edge ports can start forwarding as soon as the link is up.

Edge ports do not take part in Spanning Tree, and should not receive BPDUs. A port with edge enabled is intended to be connected directly to a host. If a port with edge enabled does receive a BPDU, it immediately begins working as a normal port, and participates in Spanning Tree.

Link Type

The link type determines how the port behaves in regard to Rapid Spanning Tree. The link type corresponds to the duplex mode of the port. A full-duplex link is point-to-point (p2p), while a half-duplex link should be configured as shared. If you select auto as the link type, the port dynamically configures the link type.

RSTP Configuration Guidelines

This section provides important information about configuring Rapid Spanning

Tree Groups:

When RSTP is turned on, STP parameters apply only to Spanning Tree Group 1.

When RSTP is turned on, Spanning Tree Groups 2 through 128 are turned off.

When RSTP is turned on, all VLANs are moved to Spanning Tree Group 1.

RSTP Configuration Example

This section provides steps to configure Rapid Spanning Tree on the EX2500 switch, using the command-line interface (CLI).

Rapid Spanning Tree Protocol is the default setting on the EX2500 switch.

Use the following procedure to configure Rapid Spanning Tree.

1.Configure port and VLAN membership on the switch.

2.Set the spanning-tree mode to Rapid Spanning Tree. ex2500(config)# spanning-tree mode rstp

36 Rapid Spanning Tree Protocol

Image 50

Juniper Networks EX2500 Port Type and Link Type, Rstp Configuration Guidelines, Rstp Configuration Example, Edge Port

Contents

Configuration Guide North Mathilda Avenue Sunnyvale, CA Ii „ Table of Contents Chapter VLANs Chapter Ports and Trunking Rmon Overview Rmon Group 1-Statistics Rmon Group 2-History Indexes Port Mirroring Overview Configuring Port MirroringAppendixes Default Vlan Settings Port-Based Vlan AssignmentPage List of Tables EX2500 Ethernet Switch Configuration Guide „ List of Tables Audience About This GuideObjectives Supported Platforms Documentation Conventions Icon Meaning Description Requesting Technical Support List of Technical PublicationsDocumentation Feedback Self-Help Online Tools and Resources Opening a Case with Jtac EX2500 Ethernet Switch Applications Page Accessing the Switch Configuring the Management Interface Dynamic Host Configuration Protocol Configure the default gateway. Enable the gateway Using Telnet Using the EX2500 Web Device Manager Configuring EX2500 Web Device Manager Access via Http Configuring EX2500 Web Device Manager Access via Https Using Snmp SNMPv1, SNMPv2 SNMPv3 Default ConfigurationUser Configuration SNMPv2 Trap Host Configuration Configuring Snmp Trap HostsSNMPv1 Trap Host Configuration Configure an entry in the notify table Securing Access to the Switch SNMPv3 Trap Host Configuration Configuring Radius on the Switch Radius Authentication and AuthorizationHow Radius Authentication Works Configure the Radius secret Radius Authentication Features in the EX2500 Switch Switch User Accounts Radius Attributes for EX2500 User Privileges TACACS+ Authentication Features in the EX2500 Switch TACACS+ AuthenticationHow TACACS+ Authentication Works „ starttime „ stoptime „ elapsedtime „ disccause Configure the TACACS+ secret and second secret Command Authorization and LoggingConfiguring TACACS+ Authentication on the Switch Secure Shell Configuring SSH Features on the SwitchGenerating RSA Host and Server Keys for SSH Access SSH Encryption of Management Messages End User Access Control SSH Integration with Radius and TACACS+ Authentication Considerations for Configuring End User Accounts User Access Control Listing Current Users Logging In to an End User Account VLANs Vlan Overview Vlan Numbers „ Port configurationVLANs and Port Vlan ID Numbers Pvid Numbers Illustrates the default Vlan settings on the switch Vlan Tagging Default Vlan Settings Port-Based Vlan Assignment Vlan Configuration Rules Vlan Topologies and Design Considerations Multiple VLANs Configuration Example Multiple VLANs example in is described in Table Enable tagging on uplink ports that support multiple VLANs Private VLANs Private Vlan Ports Configure a secondary Vlan and map it to the primary Vlan Private Vlan Configuration GuidelinesPrivate Vlan Configuration Example Verify the configuration Spanning Tree Protocol Spanning Tree Overview Bridge Priority Bridge Protocol Data Units BPDUsDetermining the Path for Forwarding BPDUs Port Priority Spanning Tree Group Configuration GuidelinesChanging the Spanning Tree Mode Port Path Cost Adding and Removing Ports from STGs Creating a VlanRules for Vlan Tagged Ports Rapid Spanning Tree Protocol Port State Changes Port Type and Link Type Rstp Configuration GuidelinesRstp Configuration Example Edge Port Per Vlan Rapid Spanning Tree Default Spanning Tree ConfigurationWhy Do We Need Multiple Spanning Trees? Pvrst Configuration Guidelines Configuring Pvrst Mstp Region Mstp Configuration GuidelinesMultiple Spanning Tree Protocol Common Internal Spanning Tree Multiple Spanning Tree Groups Configuration Example Implementing Multiple Spanning Tree Groups Fast Uplink Convergence Vlan Configuration Guidelines Configuring Fast Uplink Convergence Statistical Load Distribution Ports and TrunkingTrunking Overview Trunk Group Configuration Rules Built-In Fault ToleranceBefore Configuring Static Trunks Port Trunking Configuration Example Port Trunk Group Configuration Example Follow these steps on the EX2500 switch Define a trunk group „ Destination MAC Dmac Configurable Trunk Hash AlgorithmLink Aggregation Control Protocol „ Destination IP DIP 48 „ Link Aggregation Control Protocol Optionally Reducing Lacp Timeout Lacp Configuration GuidelinesConfiguring Lacp Set the Lacp mode Ex2500config-if# lacp timeout short ex2500config-if# exit Quality of Service QoS Overview Using ACL Filters COS To delete a MAC Extended ACL MAC Extended ACLsIP Standard ACLs To delete an IP Standard ACL IP Extended ACLs To delete an IP Extended ACL Understanding ACL Priority TCP/UDP Viewing ACL Statistics ACL Configuration ExamplesAssigning ACLs to a Port ACL Example 1-Blocking Traffic to a Host ACL Example 3-Blocking Http Traffic Add the ACL to a port ACL Example 4-Blocking All Except Certain Packets Assign the ACLs to a port Broadcast Storms Using Storm Control FiltersConfiguring Storm Control Using Dscp Values to Provide QoS Differentiated Services Concepts Per Hop Behavior Assured Forwarding Drop Precedence Class Dscp Mapping Use the following command to perform Dscp mappingQoS Levels Using 802.1p Priority to Provide QoS Shows the priority bits in a VLAN-tagged packet Queuing and Scheduling Remote Monitoring Rmon Overview Configure the Rmon statistics on a port Rmon Group 1-Statistics This configuration enables Rmon History collection on port Configuring Rmon HistoryConfigure the Rmon History parameters for a port Rmon Group 2-History Configuring Rmon Alarms Rmon Group 3-AlarmsAlarm MIB Objects Configure the Rmon Alarm parameters to track Icmp messages Ex2500config# rmon event 110 type log-only Rmon Group 9-EventsPage Igmp Igmp Snooping FastLeave Igmp Snooping Configuration Example IGMPv3 Snooping Static Multicast Router Ex2500# show ip igmp groups High Availability Through Uplink Failure Detection High Availability Overview Spanning Tree Protocol with UFD UFD Configuration Guidelines Failure Detection Pair UFD Configuration Example Monitoring UFDPage Appendixes EX2500 Ethernet Switch Configuration Guide 80 „ Appendixes „ Port Mirroring Overview on „ Configuring Port Mirroring on Port Mirroring Overview Configuring Port Mirroring Indexes „ Index on EX2500 Ethernet Switch Configuration Guide 84 „ Indexes Index Numerics Physical. See switch ports Management interface, configuringMulti-links between switches, port trunking Internet Group Management Protocol. See Igmp Security Quality of Service. See QoSQoS Segmentation. See IP subnets Segments. See IP subnets Virtual Local Area Networks. See VLANs Example showing multiple VLANs