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Dell PowerConnect M6220 User's Guide - Page 124

Managing Logs, Global Settings

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• Clock Commands. Managing Logs The switch may generate messages in response to events, faults, or errors occurring on the platform as well as changes in configuration or other occurrences. These messages are stored both locally on the platform and forwarded to one or more centralized points of collection for monitoring purposes as well as long term archival storage. Local and remote configuration of the logging capability includes filtering of messages logged or forwarded based on severity and generating component. The in-memory log stores messages in memory based upon the settings for message component and severity. The persistent log is stored in persistent storage. Two types of persistent logs may be configured. • The first log type is the system startup log. The system startup log stores the first N messages received after system reboot. This log always has the log full operation attribute set to stop on full and can store up to 32 messages. • The second log type is the system operation log. The system operation log stores the last N messages received during system operation. This log always has the log full operation attribute set to overwrite. This log can store up to 1000 messages. Either the system startup log or the system operation log stores a message received by the log subsystem that meets the storage criteria, but not both. On system startup, if the startup log is configured, it stores messages up to its limit. The operation log, if configured, then begins to store the messages. The system keeps up to three versions of the persistent logs, named 0.txt, 1.txt, and 2.txt. Upon system startup, 2.txt is removed, 1.txt is renamed 2.txt, 0.txt is renamed 1.txt, 0.txt is created and logging begins into 0.txt. (Replace in the above example to specify olog for the operation log and slog for the startup log.) The local persistent logs can be retrieved by using the CLI, xmodem over the local serial cable, and TFTP. To display the Logs menu page, click System > Logs in the tree view. Use this page access the following features: • Global Settings • RAM Log Table • Log File • Remote Log Server Settings Global Settings Use the Global Settings page to enable logs globally, and to define log parameters. The Severity log messages are listed from the highest severity to the lowest. 122 Configuring System Information

Section	Page
User’s Guide	1
Introduction	17
Switching Features	20
Port-Based Features	22
Spanning Tree Protocol Features	25
IPv6	30
OSPFv3	31
Quality of Service Features	31
Multicast Features	32
CLI Documentation	34
Using Dell™ OpenManage™ Switch Administrator	35
Understanding the Interface	37
Check Boxes	43
Defining Fields	43
Accessing the Switch Through the CLI	43
Console Connection	44
Using the CLI	44
Cable and Port Information	47
Overview	47
Power Connection	50
Hardware Description	51
Overview	51
PowerConnect Front Panel	52
Console (RS-232) Port	55
Configuring Dell™ PowerConnect™	65
Overview	65
Starting the CLI	66
General Configuration Information	68
Baud Rate	68
Booting the Switch	69
Configuration Overview	75
Advanced Configuration	80
Boot Menu Functions	89
Delete Backup Image	93
Activate Backup Image	94
Sample Configuration Process	95
Switch Setup Requirements	95
Configuring System Information	105
Overview	105
Managing Logs	124
Setting the Operational Mode	132
Defining IP Addressing	134
Out of Band Interface	135
Running Cable Diagnostics	145
Managing Device Security	149
Captive Portal	188
Defining SNMP Parameters	209
File Management	231
Defining Advanced Settings	238
Defining Stacking	240
sFlow	247
Industry Standard Discovery Protocol	255
Configuring Switching Information	261
Overview	261
Configuring Ports	287
Configuring Traffic Mirroring	298
Configuring Address Tables	302
Configuring GARP	307
Configuring the Spanning Tree Protocol	310
Configuring VLANs	324
Configuring Voice VLAN	347
Aggregating Ports	349
Managing Multicast Support	355
IGMP Snooping	362
MRouter Status	371
MLD Snooping	372
Configuring the Link Layer Discovery Protocol (LLDP)	379
Creating Link Dependencies	386
Dynamic ARP Inspection	389
DHCP Snooping	397
DHCP Relay	410
Using the Port Aggregator Feature	416
Viewing Statistics and Remote Monitoring	423
Overview	423
Table Views	424
RMON	433
Charts	448
Configuring Routing	453
Overview	453
IP	458
OSPF	465
BOOTP/DHCP Relay Agent	499
IP Helper	502
RIP	509
Router Discovery	520
Router	523
VLAN Routing	533
VRRP	536
Tunnels	546
Loopbacks	551
Configuring IPv6	559
Overview	559
Global Configuration	560
Interface Configuration	561
Interface Summary	564
IPv6 Statistics	565
IPv6 Neighbor Table	570
DHCPv6	571
OSPFv3	586
IPv6 Routes	616
Configuring Quality of Service	623
Quality of Service Overview	623
Configuring Differentiated Services	624
Class of Service	641
Auto VoIP	650
Configuring IP Multicast	653
Overview	653
Multicast Listener Discovery	666
Distance Vector Multicast Routing Protocol	679
Internet Group Management Protocol	688
Protocol Independent Multicast-Dense Mode	703
Protocol Independent Multicast-Sparse Mode	716
Getting Help	731
Dell Enterprise Training and Certification	733
Problems With Your Order	733
Product Information	734
Returning Items for Warranty Repair or Credit	734
Before You Call	734

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122

Configuring System Information

•

Clock Commands.

Managing Logs

The switch may generate messages in response to events, faults, or errors occurring on the platform as

well as changes in configuration or other occurrences. These messages are stored both locally on the

platform and forwarded to one or more centralized points of collection for monitoring purposes as well as

long term archival storage. Local and remote configuration of the logging capability includes filtering of

messages logged or forwarded based on severity and generating component.

The

in-memory

log stores messages in memory based upon the settings for message component and

severity.

The

persistent

log is stored in persistent storage. Two types of persistent logs may be configured.

•

The first log type is the

system startup log

. The system startup log stores the first N messages received

after system reboot. This log always has the log full operation attribute set to stop on full and can store

up to 32 messages.

•

The second log type is the

system operation log

. The system operation log stores the last N messages

received during system operation. This log always has the log full operation attribute set to overwrite.

This log can store up to 1000 messages.

Either the system startup log or the system operation log stores a message received by the log subsystem

that meets the storage criteria, but not both. On system startup, if the startup log is configured, it stores

messages up to its limit. The operation log, if configured, then begins to store the messages.

The system keeps up to three versions of the persistent logs, named <FILE>0.txt, <FILE>1.txt, and

<FILE>2.txt. Upon system startup, <FILE>2.txt is removed, <FILE>1.txt is renamed <FILE>2.txt,

<FILE>0.txt is renamed <FILE>1.txt, <FILE>0.txt is created and logging begins into <FILE>0.txt.

(Replace <FILE> in the above example to specify

olog

for the operation log and

slog

for the startup

log.)

The local persistent logs can be retrieved by using the CLI, xmodem over the local serial cable, and

TFTP.

To display the

Logs

menu page, click

System

Logs

in the tree view. Use this page access the following

features:

•

Global Settings

•

RAM Log Table

•

Log File

•

Remote Log Server Settings

Global Settings

Use the

Global Settings

page to enable logs globally, and to define log parameters. The

Severity

log

messages are listed from the highest severity to the lowest.