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HP 5500 Ei 5500 Si Switch Series Configuration Guide

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    							 30 
Figure 16 Network diagram  
 
 
Configuration procedure 
1. Set the IP address for each interface as shown in  Figure 16. (Details  not shown.) 
2. Configure Device A: 
# Configure the Device A to operate in NTP br oadcast client mode and receive NTP broadcast 
messages on VLAN-interface 2. 
 system-view 
[DeviceA] interface vlan-interface 2 
[DeviceA-Vlan-interface2] ntp-service broadcast-client 
3.  Configure Device B: 
# Enable NTP authentication on Device B. Configur e an NTP authentication key, with the key ID 
88 and key value 123456, and specify the key as a trusted key. 
 system-view 
[DeviceB] ntp-service authentication enable 
[DeviceB] ntp-service authentication-keyid 88 authentication-mode md5 12\
3456 
[DeviceB] ntp-service reliable authentication-keyid 88 
# Configure Device B to operate in broadcast client mode and receive NTP broadcast messages 
on VLAN-interface 2. 
[DeviceB] interface vlan-interface 2 
[DeviceB-Vlan-interface2] ntp-service broadcast-client 
4.  Configure Device C: 
# Configure Device C to operate in NTP broadcast server mode and use VLAN-interface 2 to send 
NTP broadcast packets. 
[DeviceC] interface vlan-interface 2 
[DeviceC-Vlan-interface2] ntp-service broadcast-server 
[DeviceC-Vlan-interface2] quit 
# Display the NTP service status information on Device A. 
[DeviceA-Vlan-interface2] display ntp-service status 
 Clock status: synchronized 
 Clock stratum: 4  
 Reference clock ID: 3.0.1.31 
 Nominal frequency: 64.0000 Hz
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 Actual frequency: 64.0000 Hz  
 Clock precision: 2^7 
 Clock offset: 0.0000 ms  
 Root delay: 31.00 ms  
 Root dispersion: 8.31 ms  
 Peer dispersion: 34.30 ms  
 Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02) 
The output shows that Device A has synchronized to Device C because it has a higher stratum than 
Device C. 
# Display the NTP session information of Device A. 
[DeviceA-Vlan-interface2] display ntp-service sessions 
      source    reference    stra  reach  poll  now  offset   delay  disper 
************************************************************************\
** 
[1234] 3.0.1.31  127.127.1.0  3   254     64    62   -16.0    32.0   16.\
6 
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 confi\
gured 
Total associations :  1 
The output shows that an association has been set up Device A and Device C. 
# .Display the NTP service status information on Device B. 
[DeviceB-Vlan-interface2] display ntp-service status 
 Clock status: unsynchronized 
 Clock stratum: 16 
 Reference clock ID: none 
 Nominal frequency: 100.0000 Hz 
 Actual frequency: 100.0000 Hz 
 Clock precision: 2^18 
 Clock offset: 0.0000 ms 
 Root delay: 0.00 ms 
 Root dispersion: 0.00 ms 
 Peer dispersion: 0.00 ms 
 Reference time: 00:00:00.000 UTC Jan 1 1900(00000000.00000000) 
The output shows that NTP authentication is enabl ed on Device B, but not enabled on Device C. 
Therefore, Device B cannot synchronize to Device C. 
# Enable NTP authentication Device  C. Configure an NTP authentication key, with the key ID 88 
and key value 123456, and specify  the key as a trusted key. 
[DeviceC] ntp-service authentication enable 
[DeviceC] ntp-service authentication-keyid 88 authentication-mode md5 12\
3456 
[DeviceC] ntp-service reliable authentication-keyid 88 
# Specify Device C as an NTP broadcast serv er, and associate the key 88 with Device C. 
[DeviceC] interface vlan-interface 2 
[DeviceC-Vlan-interface2] ntp-service broadcast-server authentication-ke\
yid 88 
# Display the NTP service status information on Device B. 
[DeviceB-Vlan-interface2] display ntp-service status 
 Clock status: synchronized 
 Clock stratum: 4  
 Reference clock ID: 3.0.1.31 
 Nominal frequency: 64.0000 Hz  
 Actual frequency: 64.0000 Hz
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    							 32 
 Clock precision: 2^7 
 Clock offset: 0.0000 ms  
 Root delay: 31.00 ms  
 Root dispersion: 8.31 ms  
 Peer dispersion: 34.30 ms  
 Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02) 
The output shows that Device B has synchronized to Device C because it has a higher stratum than 
Device C. 
# Display the NTP session information of Device B. 
[DeviceB-Vlan-interface2] display ntp-service sessions 
      source    reference    stra  reach  poll  now  offset   delay  disper 
************************************************************************\
** 
[1234] 3.0.1.31  127.127.1.0   3   254     64    62   -16.0    32.0   16\
.6 
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 confi\
gured 
Total associations :  1 
The output shows that an association has been set up between Device B and Device C. 
# Display the NTP service status information on Device A. 
[DeviceA-Vlan-interface2] display ntp-service status 
 Clock status: synchronized 
 Clock stratum: 4  
 Reference clock ID: 3.0.1.31 
 Nominal frequency: 64.0000 Hz  
 Actual frequency: 64.0000 Hz  
 Clock precision: 2^7 
 Clock offset: 0.0000 ms  
 Root delay: 31.00 ms  
 Root dispersion: 8.31 ms  
 Peer dispersion: 34.30 ms  
 Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02) 
The output shows that configuring NTP authenticati on on Device C does not affect Device A and 
Device A still synchronizes to Device C.
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    							 33 
Configuring the information center 
This chapter describes how to configure the information center.  
Overview 
The information center classifies and manages system information so that network administrators and 
developers can monitor network performa nce and troubleshoot network problems. 
The information center operates as follows: 
•   Receives system information including log, trap, and debugging information generated by each 
module. 
•   Outputs the information to different informat ion channels, according to output rules. 
•   Outputs information to different destinations,  based on information channel-to-destination 
associations. 
Information center assigns log, trap, and debugging  information to 10 information channels according 
to eight severity levels and then outputs the information to different destinations. The following describes 
the working process in detail. 
Figure 17  Information center diagram (default)
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    							 34 
By default, the information center is enabled. It affects system performance to some degree when it is 
processing large amounts of information. If the syst em resources are insufficient, disable the information 
center to save resources. 
Classification of system information 
The system information falls into the following types: 
•   Log information 
•   Trap  i n fo rm a t io n  
•   Debugging information 
System information levels 
The system information is classified into eight severity levels, from 0 through 7 in descending order. The 
device outputs the system information with a severity level that is higher than or equal to the specified 
level. For example, if you configure an output rule with a severity level of 6 (informational), information 
that has a severity level from 0 to 6 is output. 
Table 1  Severity description 
Severit
y Severity value Description Corresponding keyword in commands 
Emergency  0  The system is unavailable. emergencies 
Alert 1  Action must be taken 
immediately. 
alerts 
Critical 2  Critical condition. 
critical 
Error 3  Error condition. errors 
Warning 4  Warning condition. warnings 
Notice 5 Normal but significant 
condition. 
notifications 
Informational 6 
Informational messages. informational 
Debug 7  Debug messages.  debugging 
 
System information channels and output destinations 
Tabl e  2 shows the information channels and output destinations.  
The system supports ten channels. By default, channe ls 0 through 6 are configured with channel names 
and output destinations, and they are associated with output destinations. You can change these default 
settings as needed. You can also  configure channels 7, 8 and 9 associate them with specific output 
destinations to meet your needs. 
Table 2  Information channels and output destinations 
Information 
channel number
 
Default channel 
name  Default output 
destination
 Description 
0 
console  Console  Receives log, trap and debugging information.
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Information 
channel number
 
Default channel 
name Default output 
destination
 Description 
1 monitor Monitor 
terminal Receives log, trap and debugging information, 
facilitating remote maintenance. 
2 loghost Log host Receives log, trap and debugging information 
and information will be stored in files for future 
retrieval. 
3 trapbuffer Trap 
buffer Receives trap information, a buffer inside the 
device for recording information. 
4 logbuffer Log 
buffer Receives log and debugging information, a 
buffer inside the device for recording 
information. 
5 
snmpagent  SNMP module  Receives trap information. 
6  channel6  Web interface  Receives log information. 
7 channel7  Not  specified  Receives log, trap, and debugging information. 
8 channel8  Not  specified  Receives log, trap, and debugging information. 
9 channel9  Not  specified  Receives log, trap, and debugging information. 
 
Outputting system information by source module 
The system is composed of a variety of protocol modules, and configuration modules. The system 
information is classified, filtered, and output according to source modules. You can use the  info-center 
source ?  command to view the supported information source modules. 
Default output rules of system information 
A default output rule specifies the system information source modules, information type, and severity 
levels for an output destination.  Tabl e  3 sh
ows the default output rules. 
The following applies to all modules by default: 
•   All log information is allowed to be output to the Web interface. Log information that has a severity 
level of at least informational is allowed to be output to the log host. Log information that has a 
severity level of at least informational is allowed  to be output to the console, monitor terminal, and 
log buffer. Log information is not allowed to be output to the trap buffer or the SNMP module. 
•   All trap information is allowed to be output to th e console, monitor terminal, log host, Web interface. 
Trap information that has a severity level of at least informational is allowed to be output to the trap 
buffer and SNMP module. Trap information is  not allowed to be output to the log buffer. 
•   All debugging information is allowed to be output  to the console and monitor terminal. Debugging 
information is not allowed to be output to the log host, trap buffer, log buffer, the SNMP module, 
Web interface.
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Table 3 Default output rules for different output destinations 
Output 
destination  Modules 
allowed LOG TRAP
 DEBUG 
Enabled/
disabled
 Severity 
Enabled/
disabled Severity  Enabled/
disabled Severity 
Console  default (all 
modules) Enabled  Informa- 
tional Enabled Debug  Enabled Debug 
Monitor 
terminal  default (all 
modules) 
Enabled  Informa- 
tional Enabled Debug  Enabled Debug 
Log host  default (all 
modules) Enabled  Informa- 
tional Enabled Debug  Disabled Debug 
Trap buffer  default (all 
modules) Disabled  Informa- 
tional Enabled  Informatio
nal  Disabled Debug 
Log buffer  default (all 
modules) 
Enabled  Informa- 
tional 
Disabled Debug  Disabled Debug 
SNMP 
module  default (all 
modules) 
Disabled Debug  Enabled  Informatio
nal 
Disabled
 Debug 
Web 
interface  default (all 
modules) 
Enabled Debug  Enabled  Debug  Disabled Debug 
 
System information format 
The following shows the original format of system info
rmation, which might be different from what you see. 
The actual format depends on the log resolution tool you use.  
Formats 
The system information format depends on  the output destinations, as shown in Tabl e  4. 
Table 4  System information formats 
Output destinatio n Format 
Example 
Console, monitor 
terminal, logbuffer, 
trapbuffer, SNMP 
module  timestamp sysname 
module/level/digest: content 
%Jun 26 17:08:35:809 2011 Sysname 
SHELL/4/LOGIN: VTY login from 1.1.1.1
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Output destination Format Example 
Log host 
• HP format: 
timestamp 
Sysname %%vvmodule/level
/digest: source content 
• UNICOM format: 
timestamp Sysname 
vvmodule/level/serial_numb
er: content 
• HP format:  
Oct 9 14:59:04 201 
MyDevice %%10SHELL/5/SHELL_LOGIN(l):
VTY logged in from 192.168.1.21 
• UNICOM format: 
{  Oct 13 16:48:08 2011 HP 
10IFNET/2/210231a64jx073000020: 
log_type=port;content=Vlan-interface1 
link status is DOWN. 
{ Oct 13 16:48:08 2011 HP 
10IFNET/2/210231a64jx073000020: 
log_type=port;content=Line protocol on 
the interface Vlan-interface1 is DOWN. 
 
  NOTE: 
The closing set of angel brackets (< >), the space, the forward slash (/), and the colon (:) are all required
in the above format. 
 
Following is a detailed explanation of the fields involved in system information: 
PRI (priority) 
The priority is calculated using the formula: facility*8+level, where: 
•  facility  i s  t h e  f a c i l i t y  n a m e ,  r a n g i n g  f r o m  l o c a l 0  t o  l o c a l 7  (16  t o  23  i n  d e ci m a l  i n t e g e r s )  a n d  d e f a u l t s  
to local7. It can be configured with  info-center loghost.  I t  i s  us e d  to  id ent i f y  d i f fe re nt  l o g  so u rc e s  on 
the log host, and to query and filter logs from specific log sources.  
•   level  ranges from 0 to 7. See  Tabl e  1 
for more information. 
Note that the priority field is available only  for information that is sent to the log host. 
timestamp 
Times tamp records the time when the system information was generated. The time stamp of the system 
information sent to the log host has a precision of seconds, and that to all the other destinations has a 
precision of milliseconds. The time stamp format of  the system information sent to the log host is 
configured with the  info-center timestamp loghost  command, and that of the system information sent to 
the other destinations is configured with the  info-center timestamp command.
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Table 5 Description on the time stamp parameters 
Time stamp 
parameter  Description Example 
boot  Time since system startup, in the format of 
xxxxxx.yyyyyy, where xxxxxx represents the 
higher 32 bits, and yyyyyy represents the 
lower 32 bits. 
System information that is sent to all 
destinations except the log host supports this 
parameter.
  %0.109391473 Sysname 
FTPD/5/FTPD_LOGIN: User ftp 
(192.168.1.23) has logged in 
successfully. 
0.109391473 is a time stamp in the 
boot 
format. 
date  Current date and time of the system, in the 
format of Mmm dd hh:mm:ss:sss yyyy. 
All system information supports this 
parameter.
  %May 30 05:36:29:579 2011 Sysname 
FTPD/5/FTPD_LOGIN: User ftp 
(192.168.1.23) has logged in 
successfully. 
May 30 05:36:29:579 2011 is a time 
stamp in the date
 format. 
iso  Time stamp format stipulated in ISO 8601 
All system information supports this 
parameter.  2011-05-30T06:42:44 
Sysname %%10FTPD/5/FTPD_LOGIN(l): 
User ftp (192.168.1.23) has logged in 
successfully. 
2011-05-30T06:42:44 is a time stamp in 
the 
iso format. 
none  No time stamp is included. 
All system information supports this 
parameter.
  % Sysname FTPD/5/FTPD_LOGIN: User 
ftp (192.168.1.23) has logged in 
successfully. 
No time stamp is included. 
no-year-date 
Current date and time of the system, with year 
information excluded. 
Only the system information that is sent to the 
log host supports this parameter.
 May 30 06:44:22 
Sysname %%10FTPD/5/FTPD_LOGIN(l): 
User ftp (192.168.1.23) has logged in 
successfully. 
May 30 06:44:22 is a time stamp in the 
no-year-date
 format. 
 
Sysname (host name or host IP address) 
•  If the system information that is sent to a log host is in the UNICOM format, and the  info-center 
loghost source  command is configured, or vpn-instance  vpn-instance-name is provided in the 
info-center loghost  command, the field is displayed as the IP address of the device that generates 
the system information. 
•   If the system information is sent to other destinations, or is sent to a log host in the HP format, the 
field is displayed as the system name of the devi ce that generates the system information. You can 
use the  sysname  command to modify the system name. For more information, see  Fundamentals 
Command Reference . 
%% (vendor ID) 
This field indicates that the information is generated by an HP device. It is displayed only when the system 
information is sent to a log host in the format of HP.
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    							 39 
vv 
This field is a version identifier of syslog, with a value of 10. It is displayed only when the output 
destination is log host. 
module 
The module field represents the name of the module  that generates system information. You can enter the 
info-center source ?  command in system view to view the module list. 
level (severity) 
System information is divided  i n t o  e i g h t  l e v e l s  b a s e d  o n  i t s  s e v e r i t y,  f r o m  0  t o  7.  S e e   Tabl e  1 for definitions 
and descriptions of these severity levels. The leve ls of system information generated by modules are 
predefined by developers, and you cannot change the system information levels. However, with the 
info-center source  command, you can configure to output information of the specified level and not to 
output information lower than the specified level. 
digest 
The digest field is a string of up to 32 characters, outlining the system information. 
For system information destined to the log host:  
•   If the character string ends with (l), the information is log information. 
•   If the character string ends with (t), the information is trap information. 
•   If the character string ends with (d), the information is debugging information. 
For system information destined to other destinations: 
•   If the time stamp starts with  a percent sign (%), the information is log information. 
•   If the time stamp starts with a pound sign  (#), the information is trap information. 
•   If the time stamp starts with an asterisk (* ), the information is debugging information. 
serial number 
This field indicates the serial number of the device that generates the system information. It is displayed 
only when the system information is sent to a log host in the UNICOM format. 
source 
This field indicates the source of the information. It is optional and is displayed only when the system 
information is sent to a log host in the HP format. This field takes one of the following values: 
•  IRF member ID 
•   IP address of the log sender 
content 
This field provides the content of the system information. 
Information center configuration task list 
 
Task Remarks 
Outputting system information to the console  Optional 
Outputting system information to the monitor terminal Optional 
Outputting system information to a log host Optional
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