Dell Force10 S25-01-GE-24P Bedienungsanleitung

101-00337-00 1

Basic Layer 2 Setup and Buffer Tuning of the

S25P for Storage Environments

Introduction

This document is intended for the users of S-Series S25P switches running FTOS 7.8.1.0 and configured

for use in a storage environment. This document describes:

• Using the console port to enable all ports on the switch for Layer 2 switching

• Verifying that the installed FTOS software is FTOS 7.8.1.0

• Setting up passwords for managing the switch. For details on management, see the Management

chapter in the FTOS Configuration Guide for the S-Series and the Control and Monitoring chapter in

the FTOS Command Reference for the S-Series.

• Optimizing the buffer for use in pure storage environments

This document does not cover:

• Installing optional modules. For installation details, see the document Installing S25P Systems. For a

configuration example, see Figure 7 on page 6 here.

• Adding the switch to an S-Series stack. For stacking configuration details, see the Stacking chapters in

the Configuration Guide and the Command Reference listed above.

• Layer 3 (IP addressing) configuration. For details, see the Interfaces and IP Addressing chapters in the

Configuration Guide and Interface Commands chapter in the Command Reference listed above.

The full S-Series documentation set is available on the Technical Documentation CD-ROM and from the

Documentation tab of iSupport at the Force10 Networks website:

https://www.force10networks.com/CSPortal20/KnowledgeBase/Documentation.aspx

This document contains the following sections:

•Accessing the Console Port on page 2

•Setting Up Passwords on page 3

•Setting Up Layer 2 Switching on page 4

•Managing the Buffer Profile and Setting up Flow Control on page 5

2 Basic Layer 2 Setup and Buffer Tuning of the S25P for Storage Environments

Accessing the Console Port

Verifying the Software Release and S-Series Model

Unless you know that your system has already been installed with FTOS 7.8.1.0 or later, verify that the

required version is installed.

After typing show inventory, press Enter. The system replies with the type of output shown below. In this

case, “System Name” (S-Series model type) is “S25P” and “Software version” is “7.8.1.0”.

The following screenshot illustrates the expected output of the show inventory command:

If your system does not have the correct software version installed, see the S-Series and FTOS Release

Notes, Version 7.8.1.0 for upgrade instructions. A printed copy should be included with your system.

Alternatively, see the printed Readme First document that is included with your system.

Step Task

1Install a straight-through RJ-45 copper cable (a standard Ethernet cable) between your system and the console

port of the S-Series switch. The console port is at the far left of the faceplate.

2Turn on the switch by connecting it to power (there is no on/off button).

3After the switch boots up (the status messages stop), press Enter twice to get the EXEC mode prompt. You

should see Force10>, as shown below.

Task Command Syntax Command Mode

Display the installed FTOS version and S-Series model. show inventory EXEC

Force10>show inventory

System Name : S25P

System Mode : 1.0

Software Version : 7.8.1.0

Unit Type Serial Number Part Number Revision

--------------------------------------------------------------

* 0 S25-01-GE-24P DL277000000 7590004800 B

0 S50-PWR-AC N/A N/A N/A

0 S50-FAN N/A N/A N/A

* - Management Unit

Software Protocol Configured

--------------------------------------------------------------

Force10>

101-00337-00 3

Setting Up Passwords

The following screenshot illustrates the use of these commands:

You can see the result of setting up a password, or of the other configuration changes that you make by

entering, in EXEC privilege mode, show running-config. The following screenshot shows the running

configuration from its top up to the part that displays the result of using the commands, above:

In this case, the password was selected to be encrypted, so the result displayed is encrypted. For details on

setting passwords, see the Getting Started chapter in the FTOS Configuration Guide for the S-Series and

the Security chapter in the FTOS Command Reference for the S-Series.

For details on using the show running-config command, see the File Management chapter in the FTOS

Command Reference for the S-Series.

Step Task Command Syntax Command Mode

1Go from EXEC mode to EXEC privilege mode, commonly

called enable mode. After you enter enable and press Enter,

the prompt changes to: Force10#

enable EXEC

2Go from EXEC privilege mode to CONFIGURATION mode.

The prompt changes to: Force10(conf)#

config EXEC privilege

3Create a password for remote access (through Telnet).

For example, for the username “admin” with password

“admin”, enter username admin password admin.

username name

password password

CONFIGURATION

4Create a password for access to Command Line Interface

(CLI) modes beyond the EXEC mode. This is typically called

the enable password.

For example, to create the enable password “admin”, enter

enable password admin.

enable password

password

CONFIGURATION

Force10>enable

Force10#config

Force10(config)#username admin password admin

Force10(config)#enable password admin

Force10(config)#

Force10#show run

Current Configuration ...

! Version 7.8.1.0

! Last configuration change at Wed Oct 27 17:55:30 2008 by default

redundancy disable-auto-reboot stack-unit

hardware watchdog

hostname Force10

enable password 7 b125455cf679b208e79b910e85789edf

username admin password 0 admin

4 Basic Layer 2 Setup and Buffer Tuning of the S25P for Storage Environments

Setting Up Layer 2 Switching

The following screenshot illustrates the use of these commands (use a space before and after the hyphen):

Step Task Command Syntax Command Mode

1Select all ports.

This example assumes that the stack ID is 0.

The prompt changes to:

Force10(conf-if-range-gi-0/1-24)#

interface range gi 0/1 - 24

(A space is required before and

after the dash in the command.)

CONFIGURATION

2Enable the selected ports for Layer 2 switching. switchport INTERFACE RANGE

3Set the maximum Link MTU (frame size) to handle

Jumbo frames.

mtu 9252 INTERFACE RANGE

4Administratively enable all ports. no shutdown INTERFACE RANGE

5Return to CONFIGURATION mode. exit INTERFACE RANGE

6Repeat the above sequence for the 10GbE ports. interface range te 0/25 - 28 CONFIGURATION

7After physically connecting the ports, use the show

ip interfaces brief command to inspect

administrative status (the Status field in the output)

and link status (the Protocol field).

do show ip interfaces brief INTERFACE RANGE

Force10(config)#interface range gigabitethernet 0/1 - 24

Force10(conf-if-range-gi-0/1-48)#switchport

Force10(conf-if-range-gi-0/1-48)#mtu 9252

Force10(conf-if-range-gi-0/1-48)#no shutdown

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/1

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/2

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/3

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/4

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/5

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/6

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/7

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/8

21:22:23: %STKUNIT0-M:CP %IFMGR-5-ASTATE_UP: Changed interface Admin state to up: Gi 0/9

! ----------------------- output truncated ------------- !

Force10#show ip interface brief

Interface IP-Address OK Method Status Protocol

GigabitEthernet 0/0 unassigned NO Manual up down

GigabitEthernet 0/1 unassigned NO Manual up down

GigabitEthernet 0/2 unassigned NO Manual up down

GigabitEthernet 0/3 unassigned NO Manual up down

GigabitEthernet 0/4 unassigned NO Manual up down

GigabitEthernet 0/5 unassigned NO Manual up down

GigabitEthernet 0/6 unassigned NO Manual up down

GigabitEthernet 0/7 unassigned NO Manual up down

GigabitEthernet 0/8 unassigned NO Manual up down

GigabitEthernet 0/9 unassigned NO Manual up down

! ----------------------- output truncated ------------- !

101-00337-00 5

Managing the Buffer Profile and Setting up Flow Control

Buffer profile management, also called buffer tuning or buffer carving, enables you to modify the way your

switch allocates buffers from its available memory, and helps prevent packet drops during a temporary

burst of traffic.

Force10 recommends the following buffer profile configuration for high-performance storage

environments, and is valid for both standalone and stacked units of the S-Series.

Buffer Profile Management with FTOS 7.8.1.0

FTOS 7.8.1.0 greatly simplifies buffer tuning for use in dedicated storage environments:

For buffer tuning details, see the S-Series Debugging and Diagnostics chapters in the S-Series versions of

the FTOS Configuration Guide and the FTOS Command Reference.

Buffer Profile Management with FTOS 7.7.2.0a

The screenshots, below, are from the S-Series and FTOS Release Notes Version 7.7.2.0. They show

examples of buffer configurations excerpted from the running configuration of an S-Series switch running

FTOS 7.7.2.0a and optimized for a storage environment.

The configuration statements can be copied and pasted into the CLI to accomplish generally the same

result as provided in the one command, shown above, in FTOS 7.8.1.0.

For more on buffer profile management, flow control, and Ethernet Pause Frames, see that Release Notes

document and the FTOS Configuration Guide for the S-Series.

Figure 1 Buffer Carving for 1Gig Interfaces in a Standalone Unit

Step Task Command Syntax Command Mode

1Optimize the switch memory buffers for use in

dedicated storage environments.

buffer-profile global 1Q CONFIGURATION

2Change from CONFIGURATION mode to EXEC

privilege mode.

exit CONFIGURATION

3Save the configuration to non-volatile memory. write memory EXEC privilege

4Restart the system. reload EXEC privilege

buffer-profile fp eql-fp

buffer dedicated queue0 3 queue1 3 queue2 3 queue3 3 queue4 3 queue5 3 queue6 3 queue7 3

buffer dynamic 1257

Force10#

6 Basic Layer 2 Setup and Buffer Tuning of the S25P for Storage Environments

Figure 2 Defining a Buffer Profile for ASIC Queues [in bytes]

Figure 3 Configuring Internal ASIC Buffers in Stack Unit 0

Figure 4 Applying the Buffer Profile to all 1Gig and 10Gig Ports

Figure 5 Flow Control for 1Gig Interfaces

Figure 6 Refresh Interval for Interface Statistics

Figure 7 Configuring Ten Gig Ports [assuming all four 10Gig interfaces are available]

Figure 8 Assigning Ports to a VLAN

buffer-profile fp eql-hig

buffer dedicated queue0 3 queue1 3 queue2 3 queue3 3 queue4 3 queue5 3 queue6 3 queue7 3

buffer dynamic 1257

Force10#

buffer fp-uplink stack-unit 0 port-set 0 buffer-policy eql-hig

buffer fp-uplink stack-unit 0 port-set 1 buffer-policy eql-hig

Force10#

interface range gi 0/1 - 24 , te 0/25 - 28

buffer-policy eql-fp

Force10#

interface range gi 0/1 - 24

flow-control rx on tx on

Force10#

rate-interval 30

Force10#

interface range te 0/25 - 28

no ip address

mtu 9252

switchport

flowcontrol rx on tx on threshold 1024 1024 1054

rate-interval 30

no shutdown

Force10#

interface vlan 2

untagged gi 0/1 - 24, te 0/25 - 28

Force10#

101-00337-00 7

To apply the configuration, above, to other stack members, use the following commands. The interface

range used and port-pipes (“port-set 0-1”) designated would depend on the S-Series model. The following

sequence presumes that the subject stack member is an S25P model. For an example of configuring an

S50N model, see Basic Layer 2 Setup and Buffer Tuning of the S50N for Storage Environments.

Step Task Command Syntax Command Mode

1Apply the “eql-hig”

buffer profile to another

stack member.

buffer fp-uplink stack-unit 0-7 port-set 0

buffer-policy eql-hig

For the variable 0-7, enter the stack ID of the stack member

to which to apply the “eql-hig” configuration.

For example, for an S25P switch with a stack ID of 1, the

command is:

buffer fp-uplink stack-unit 1 port-set 0

buffer-policy eql-hig

CONFIGURATION

2Select all ports on the

switch.

interface range gi slot/port - port

For the variable slot/port, enter the stack ID of the target

stack member, along with 1 for the beginning port number in

the range and 24 for the highest-numbered 1GbE port.

For example, for an S25P switch with a stack ID of 1, the

command is: interface range gi 1/1 - 24

If the switch has 10 GbE modules inserted, include the 10

GbE port range in the command, for example:

interface range gi 1/1 - 24, te 1/25 - 28

CONFIGURATION

3Apply the “eql-fp” buffer

profile to the ports

selected above.

buffer-policy eql-fp INTERFACE

RANGE

4Change modes from

INTERFACE RANGE to

CONFIGURATION.

exit INTERFACE

RANGE

5Select all 1GbE ports. interface range gi slot/1 - 24

For slot, enter the stack ID of of the target stack member.

For example, for a stack ID of 1, enter:

interface range gi 1/1 - 24

CONFIGURATION

6Enable flow control on

the 1GbE ports.

flow-control rx on tx on INTERFACE

RANGE

7Change modes from

INTERFACE RANGE to

EXEC privilege.

end INTERFACE

RANGE

8Save the configuration to

non-volatile memory.

write memory EXEC privilege

9Restart the system. reload EXEC privilege

10 Verify that the buffer

profile is applied.

show buffer-profile summary fp-uplink EXEC privilege

8 Basic Layer 2 Setup and Buffer Tuning of the S25P for Storage Environments

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