Cisco OL-5490-01 Especificaciones Pagina 163
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Valorado. / 5. Basado en revisión del cliente
7-9
Cisco AS5x00 Case Study for Basic IP Modem Services
11/24/1999
Section 7 Enabling Management Protocols: NTP, SNMP, and Syslog
Disabling the Logging of Access Interfaces
Step 2
Monitor SNMP input and output statistics. For example, display a real-time view of who is polling the
NAS for statistics and how often.
Excessive polling will:
Consume much of the CPU resources
Cause packets to be dropped
Crash the NAS
5300-NAS#show snmp
Chassis: 11811596
Contact: admin [email protected]
Location: 5300-NAS-Maui
0 SNMP packets input
0 Bad SNMP version errors
0 Unknown community name
0 Illegal operation for community name supplied
0 Encoding errors
0 Number of requested variables
0 Number of altered variables
0 Get-request PDUs
0 Get-next PDUs
0 Set-request PDUs
0 SNMP packets output
0 Too big errors (Maximum packet size 1500)
0 No such name errors
0 Bad values errors
0 General errors
0 Response PDUs
0 Trap PDUs
SNMP logging: enabled
Logging to 172.22.66.18.162, 0/10, 0 sent, 0 dropped.
5300-NAS#
Task 4. Disabling the Logging of Access Interfaces
Limit the amount of output that is logged from the group-async interface and ISDN D channels.
Carefully choose the data sources for system management purposes. AAA accounting and the
modem-call record terse feature provides the best data set for analyzing ISDN remote node device
activity.
Link status up-down events and SNMP trap signals:
Occur regularly on access interfaces. Dialer interfaces going up and down is normal behavior and
does not indicate a problem.
Should not be logged or sent to a management server
The following configuration fragment disables logging on access interfaces:
!
interface Serial 0:23
no logging event link-status
no snmp trap link-status
!
interface Serial 1:23
no logging event link-status
no snmp trap link-status
!
- IP Modem Services 1
- Contents 4
- Introduction 7
- Scenario Description 7
- 11/24/1999 10
- Dial Planning Questionnaire 10
- Network Service Definition 11
- Table 1-1 Hardware 13
- Table 1-5 IP Subnetting Plan 16
- Verifying Basic Setup 23
- Inside a Cisco 28
- Configuring Cisco IOS Basics 32
- Table 2-3 Local AAA Commands 33
- Timesaver 36
- Enabling the T1 Controllers 38
- Table 2-6 Alarm Conditions 41
- Configuring Modems and Lines 44
- Table 2-9 IP Routing Commands 46
- Call-Processing Components 55
- DSC Troubleshooting Tips 63
- Component Description 71
- Table 3-5 Local AAA Commands 78
- 2.4 Configuring Basic IP 79
- Table 3-7 Alarm Conditions 85
- Table 3-9 IP Routing Commands 89
- Verifying Modem Performance 95
- Async DataComm Model 96
- RS-232 in Cisco IOS 98
- V.34 Basic Rules 102
- V.90 Basic Rules 103
- 5300-NAS# 5300-NAS# 105
- Tech Tip 106
- What to do Next 120
- In this Section 121
- Configuring IPCP Options 122
- Configuring LCP Options 123
- Enabling PPP Autoselect 124
- 6.1 Show Caller Statistics 130
- Inspecting Active Call States 131
- Modem Management Operations 137
- Managing Modem Firmware 138
- Task 2. Enabling Syslog 158
- Enabling Syslog 159
- Task 3. Enabling SNMP 160
- Enabling SNMP 161
- Table 7-3 SNMP Commands 162
- Cisco AS5300 Configuration 169
- Cisco AS5800 Configuration 172
- 11/24/99 177
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