Allied Telesis AT-x900-12XT/S User manual

C613-16106-00 REV B www.alliedtelesis.com

AlliedWare PlusTM OS

How To |

Introduction

This How To Note introduces a number of commonly-used switching features of the

AlliedWare PlusTM operating system (OS), the next generation operating system for Allied

Telesis Inc’s high performance layer 3 managed switches:

zchanging port speed, duplex mode, and polarity

zVLANs

zRSTP and MSTP

zlink aggregation (static and using LACP)

zport mirroring

Contents

Introduction .............................................................................................................................................. 1

Contents ............................................................................................................................................ 1

Related How To Notes ................................................................................................................... 2

Which products and software version does it apply to? ........................................................ 2

Port Numbering ....................................................................................................................................... 3

Port numbers .................................................................................................................................... 3

Port ranges ........................................................................................................................................ 4

Port speed, duplex mode, and polarity .............................................................................................. 5

How to set the speed ..................................................................................................................... 5

How to set the duplex mode ........................................................................................................ 6

How to set the polarity .................................................................................................................. 6

Basic VLAN and IP configuration ......................................................................................................... 7

Configure Basic Switching Functionality

Page 2 | AlliedWare Plus™ OS How To Note: Switching

Introduction

Rapid Spanning Tree Protocol (RSTP) .............................................................................................. 12

The default configuration ............................................................................................................. 12

How to change the root bridge priority .................................................................................. 14

How to set ports as edge ports ................................................................................................. 14

Multiple Spanning Tree Protocol (MSTP) ......................................................................................... 15

Link Aggregation .................................................................................................................................... 21

How to configure Link Aggregation Control Protocol (LACP) .......................................... 21

How to configure static aggregation .......................................................................................... 24

Port mirroring ........................................................................................................................................ 25

Appendix: Complete configuration scripts ...................................................................................... 26

Script for VLAN example ............................................................................................................. 26

Script for MSTP example .............................................................................................................. 28

Related How To Notes

You also may find the following AlliedWare Plus OS How To Note useful:

How To Get Started With The AlliedWare PlusTM Operating System.

Which products and software version does it apply to?

This How To Note applies to the following Allied Telesis switches, running the

AlliedWare Plus OS software version 5.2.

or later:

zSwitchBlade x908

zx900 series

Page 3 | AlliedWare Plus™ OS How To Note: Switching

Port Numbering

Port numbers

In the AlliedWare Plus OS, switch ports are named portx.y.z (e.g. port

.0.

), where:

zthe first number (x) is the stack ID number

zthe second number (y) is the module number.

For ports on the base unit, the module number is 0.

For XEMs, the module numbering starts at

on the left-hand side of the switch when you

view the switch from the front, as the following figure shows for an x900 series switch:

For switches with multiple rows of XEMs, the numbering starts at the top left-hand corner,

as the following figure shows for a SwitchBlade x908:

The XEM bay number is printed on the top left-hand corner of each XEM bay.

zthe third number (z) is the port number.

PORT 2PORT 1 STACK

SELECT STATUS

XEM-STK

FAULTNEGOTIATING LINK

PORT

STAT MEMBERMASTER

PORT 2PORT 1 STACK

SELECT STATUS

XEM-STK

FAULTNEGOTIATING LINK

PORT

STAT MEMBERMASTER

XEM 1 XEM 2

XEM-12T

ports-xems-x900.eps

AT-SBx908 Enhanced L3+ Modular Switch

RESET

CONSOLEETH0 FAULT M ASTE R

STACKING SYSTEM POE

PORT 1 PORT 2 PSU 1 PSU 2 PSU 1 PSU 2

SwitchBlade

x908

1 2

6 7

3 4

XEM-12TXEM-12T

XEM 1 XEM 2 XEM 3 XEM 4

XEM 5 XEM 6 XEM 7 XEM 8

ports-xems-x908.eps

Page 4 | AlliedWare Plus™ OS How To Note: Switching

Port Numbering

Port ranges

Continuous To configure a continuous range of ports at the same time, enter the range in either of the

formats:

portx.y.z-portx.y.z

portx.y.z-x.y.z

For example, to configure the same interface setting on base switch ports

0-20, enter the

Global Configuration mode command:

awplus(config)#interface port1.0.10-1.0.20

Non-

continuous

To configure a non-continuous set of ports at the same time, enter the ports as a comma-

separated list, like this:

portx.y.z,portx.y.z

For example, to configure the same interface setting on base switch ports

and 5, enter the

Global Configuration mode command:

awplus(config)#interface port1.0.1,port1.0.5

You can combine a hyphen-separated range and a comma-separated list. For example, to

configure the same interface setting on base switch ports

-3 and 5, enter the Global

Configuration mode command:

awplus(config)#interface port1.0.1-1.0.3,port1.0.5

Page 5 | AlliedWare Plus™ OS How To Note: Switching

Port speed, duplex mode, and polarity

In most networks, you will not need to change the port speed, duplex mode, or polarity,

because the ports automatically negotiate suitable settings.

This section describes how to change them, if you need to.

Enter

Interface

mode

All three are interface settings, so you first enter Interface Configuration mode for the port

or port range you want to configure, by entering one of the commands:

awplus(config)#interface portx.y.z

awplus(config)#interface portx.y.z-x.y.z

The prompt changes to:

awplus(config-if)#

How to set the speed

The following table shows the speed options for each type of port.

To change the speed, first enter Interface Configuration mode for the port or port range you

want to configure. Then enter the command:

awplus(config-if)#speed <value>

For example, to set the speed of a tri-speed port to

00Mbps, enter the command:

awplus(config-if)#speed 100

To return the port to autonegotiating its speed, enter the command:

awplus(config-if)#speed auto

Port type Speed Options

non-SFP RJ-45 copper ports auto (the default)

000

supported tri-speed copper SFPs auto (the default)

000

00Mb fibre SFPs

00 (the default)

000Mb fibre SFPs auto (the default)

000

XFP modules auto (the default)

0000

Page 6 | AlliedWare Plus™ OS How To Note: Switching

Port speed, duplex mode, and polarity

How to set the duplex mode

By default, ports autonegotiate duplex mode (except for

00Base-FX ports which do not

support autonegotiation, so default to full duplex mode).

To change this, first enter Interface Configuration mode for the port or port range you want

to configure.

Then, to specify full duplex, enter the command:

awplus(config-if)#duplex full

To specify half duplex, enter the command:

awplus(config-if)#duplex half

To autonegotiate duplex mode, enter the command:

awplus(config-if)#duplex auto

How to set the polarity

By default, ports use auto MDI/MDI-X.

To change this, first enter Interface Configuration mode for the port or port range you want

to configure.

Then, to specify MDI, enter the command:

awplus(config-if)#polarity mdi

To specify MDI-X (crossover), enter the command:

awplus(config-if)#polarity mdix

To return to auto-detection, enter the command:

awplus(config-if)#polarity auto

Page 7 | AlliedWare Plus™ OS How To Note: Switching

Basic VLAN and IP configuration

This section configures a switch in a simple four-VLAN network, shown in the following

figure.

In this network, VLANs 2-4 span two switches. The section configures the left-hand switch in

the above figure. This switch is connected to a second switch via port

.0.

For the complete script for this example, see "Script for VLAN example" on page 26.

Enter Global Configuration mode and enter the command:

awplus(config)#vlan database

This puts you into VLAN mode. To create the VLANs, enter the commands:

awplus(config-vlan)#vlan 2 name vlan2

awplus(config-vlan)#vlan 3 name vlan3

awplus(config-vlan)#vlan 4 name vlan4

The AlliedWare Plus OS automatically enables new VLANs, and therefore adds the following

line to the running-config:

vlan 2-4 state enable

1. Create VLANs 2-4

Gateway:

192.168.1.254/24

vlan3:

192.168.3.1/24

vlan2:

192.168.2.1/24

1.0.3

1.0.2

1.0.4

vlan4:

192.168.4.1/24

vlan1:

192.168.1.1/24

port1.0.1

802.1Q trunked port:

vlan2, vlan3, vlan4

AlliedWare Plus

Switch

vlan2

vlan3

vlan4

vlans.eps

Page 8 | AlliedWare Plus™ OS How To Note: Switching

Basic VLAN and IP configuration

VLANs are configured as an attribute of switch ports. This means that you go into Interface

Configuration mode to configure the switch ports, and specify the VLANs you want to

associate with each switch port.

From Global Configuration mode, enter Interface Configuration mode by entering the

command:

awplus(config)#interface port1.0.1

Traffic for all three VLANs goes over port

.0.

, so next make

this port an 802.

Q trunk, by entering the command:

awplus(config-if)#switchport mode trunk

Finally, associate the port with the appropriate VLANs:

awplus(config-if)#switchport trunk allowed

vlan add 2-4

Note that by default the port’s native VLAN is VLAN

. The

native VLAN is the VLAN that the port uses for untagged

packets.

Change to configuring port

.0.2 by entering the command:

awplus(config-if)#interface port1.0.2

Associate vlan2 with the port, by entering the command:

awplus(config-if)#switchport access vlan 2

Ports in access mode send and receive untagged packets.

Similarly, associate vlan3 with port

.0.3, and vlan4 with port

.0.4, by entering the commands:

awplus(config-if)#interface port1.0.3

awplus(config-if)#switchport access vlan 3

awplus(config-if)#interface port1.0.4

awplus(config-if)#switchport access vlan 4

2. Associate the VLANs with port

.0.

3. Associate VLANs with ports

.0.2-

.0.3

Tip:

In the AlliedWare OS, we

add ports to VLANs as

tagged ports. In the

AlliedWare Plus OS, we

associate VLANs with a

trunk mode port. The port

behaviour is the same.

Tip:

You do not have to leave

Interface Configuration

mode to change interfaces.

Page 9 | AlliedWare Plus™ OS How To Note: Switching

Basic VLAN and IP configuration

Change to configuring vlan

by entering the command:

awplus(config-if)#interface vlan1

Assign the IP address and subnet by entering the command:

awplus(config-if)#ip address 192.168.1.1/24

Similarly, configure the other VLANs by entering the commands:

awplus(config-if)#interface vlan2

awplus(config-if)#ip address 192.168.2.1/24

awplus(config-if)#interface vlan3

awplus(config-if)#ip address 192.168.3.1/24

awplus(config-if)#interface vlan4

awplus(config-if)#ip address 192.168.4.1/24

Return to Global Configuration mode by entering the command:

awplus(config-if)#exit

Then enter the command:

awplus(config)#ip route 0.0.0.0/0 192.168.1.254

4. Assign IP addresses to the VLANs

5. Create a route to the default gateway

Page 10 | AlliedWare Plus™ OS How To Note: Switching

Basic VLAN and IP configuration

To check the configuration, first return to Privileged Exec mode by entering the command:

awplus(config)#exit

To see port membership and state for the VLANs, enter the command:

awplus#show vlan brief

The output looks like this:

To see the VLANs associated with each switch port, enter the command:

awplus#show interface switchport

The output looks like this:

6. Check the configuration

VLAN ID Name Type State Member ports

(u)-Untagged, (t)-Tagged

======= ================ ======= ======= ====================================

1 default STATIC ACTIVE port1.0.1(u) port1.0.5(u) port1.0.6(u)

port1.0.7(u) port1.0.8(u) port1.0.9(u)

port1.0.10(u) port1.0.11(u)

port1.0.12(u) port1.0.13(u)

port1.0.14(u) port1.0.15(u)

port1.0.16(u) port1.0.17(u)

port1.0.18(u) port1.0.19(u)

port1.0.20(u) port1.0.21(u)

port1.0.22(u) port1.0.23(u)

port1.0.24(u)

2 vlan2 STATIC ACTIVE port1.0.1(t) port1.0.2(u)

3 vlan3 STATIC ACTIVE port1.0.1(t) port1.0.3(u)

4 vlan4 STATIC ACTIVE port1.0.1(t) port1.0.4(u)

Interface name : port1.0.1

Switchport mode : trunk

Ingress filter : enable

Acceptable frame types : all

Default Vlan : 1

Configured Vlans : 1 2 3 4

Interface name : port1.0.2

Switchport mode : access

Ingress filter : enable

Acceptable frame types : all

Default Vlan : 2

Configured Vlans : 2

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