CCNA - Day 41 - Syslog

Configure synchronous logging on the device:

R1(config-line)# [...]

logging synchronous

Configure Syslog monitoring to an external server

R1(config)# [...]

logging ip-address

OR

logging host ip-address

Configure Syslog monitoring to the buffer, specifying the size/level.

R1(config)# [...]

logging buffered [size] level

Configure Syslog monitoring to the console line, specifying the level.

R1(config)# [...]

logging console level

Configure Syslog monitoring to the VTY lines, specifying the level.

R1(config)# [...]

logging monitor level

Configure the level of Syslog messages sent to an external server:

R1(config)# [...]

logging trap level

Enable sequence numbers for Syslog messages:

R1(config)# [...]

service sequence-numbers

Enable timestamps for Syslog log messages, displaying the date and time.

R1(config)# [...]

service timestamps log datetime

Syslog message format:

[...]:timestamp: %facility-severity-mnemonic:description

seq

Syslog message format:

seq:[...]: %facility-severity-mnemonic:description

timestamp

Syslog message format:

seq:timestamp: %[...]-severity-mnemonic:description

facility

Syslog message format:

seq:timestamp: %facility-[...]-mnemonic:description

severity

Syslog message format:

seq:timestamp: %facility-severity-[...]:description

mnemonic

Syslog message format:

seq:timestamp: %facility-severity-mnemonic:[...]

description

Syslog servers listen for messages on [...] port 514.

UDP

Syslog servers listen for messages on UDP port [...].

514

Syslog severity level:

0 = [...]

Emergency

Syslog severity level:

1 = [...]

Alert

Syslog severity level:

2 = [...]

Critical

Syslog severity level:

3 = [...]

Error

Syslog severity level:

4 = [...]

Warning

Syslog severity level:

5 = [...]

Notice/Notification

Syslog severity level:

6 = [...]

Informational

Syslog severity level:

7 = [...]

Debugging

Syslog severity level:

[...] = Alert

1

Syslog severity level:

[...] = Critical

2

Syslog severity level:

[...] = Debugging

7

Syslog severity level:

[...] = Emergency

0

Syslog severity level:

[...] = Error

3

Syslog severity level:

[...] = Informational

6

Syslog severity level:

[...] = Notice/Notification

5

Syslog severity level:

[...] = Warning

4

When connected via Telnet/SSH, display Syslog messages for the current session:

R1# [...]

terminal monitor

Which locations are Syslog messages sent to by default?

Console line

Buffer

Which Syslog message field?

-A number that indicates the order of messages.

seq

Which Syslog message field?

-A short code for the message, indicating what happened.

mnemonic

Which Syslog message field?

-Detailed information about the event being reported.

description

Which Syslog message field?

-Indicates how serious the logged event is.

severity

Which Syslog message field?

-Indicates the time the message was generated.

time stamp

Which Syslog message field?

-Indicates which process on the device generated the message.

facility