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Configuration Guide for Cisco DSLAMs with NI-2
OL-2074-03
Chapter 3 Initially Configuring the Cisco DSLAM
Configuring SNMP Management
The DSLAM tracks statistics, such as the average round-trip time required to reach the host, for each
session. Using the statistics for a session, the SNMP manager in the DSLAM can set reasonable timeout
periods for future requests, such as informs, for that host. If the session is deleted, all statistics are lost.
If another session with the same host is later created, the request timeout value for replies will return to
the default value.
Sessions consume memory. A reasonable session timeout value should be large enough that regularly
used sessions are not prematurely deleted, yet small enough such that irregularly used, or one-time
sessions, are purged expeditiously.
Enabling the SNMP Manager
To enable the SNMP manager process and set the session timeout value, use the following commands
in global configuration mode:
Monitoring the SNMP Manager
To monitor the SNMP manager process, use the following commands in EXEC mode, as needed:
SNMP Configuration Examples
The following example enables SNMPv1, SNMPv2c, and SNMPv3. The configuration permits any
SNMP manager to access all objects with read-only permissions using the community string named
public. This configuration does not cause the DSLAM to send any traps.
DSLAM(config)# snmp-server community public
The following example permits any SNMP to access all objects with read-only permission using the
community string named public. The DSLAM also will send alarm traps to the hosts 172.16.1.111 and
172.16.1.33 using SNMPv1 and to the host 172.16.1.27 using SNMPv2c. The community string named
public is sent with the traps.
DSLAM(config)# snmp-server community public
DSLAM(config)# snmp-server enable traps alarms
DSLAM(config)# snmp-server host 172.16.1.27 version 2c public
DSLAM(config)# snmp-server host 172.16.1.111 version 1 public
DSLAM(config)# snmp-server host 172.16.1.33 public
Command Purpose
Step 1
DSLAM(config)# snmp-server manager
Enables the SNMP manager.
Step 2
DSLAM(config)# snmp-server manager session-timeout
seconds
(Optional) Changes the session timeout value.
Command Purpose
DSLAM> show snmp
Displays global SNMP information.
DSLAM> show snmp sessions [brief]
Displays information about current sessions.
DSLAM> show snmp pending
Displays information about current pending requests.
- Text Part Number: OL-2074-03 1
- CONTENTS 3
- Contents 10
- OL-2074-03 10
- About This Guide 19
- Conventions 20
- {in 21
- Related Documentation 22
- Obtaining Documentation 22
- Documentation Feedback 23
- Cisco.com 23
- Technical Assistance Center 24
- Cisco DSLAM User Interface 25
- Accessing Command Modes 26
- Understanding Command Modes 29
- ROM Monitor Mode 30
- Global Configuration Mode 30
- Interface Configuration Mode 31
- Profile Configuration Mode 31
- Line Configuration Mode 31
- ATM Router Configuration Mode 32
- PNNI Node Configuration Mode 32
- Auto-sync Configuration Mode 32
- Redundancy Configuration Mode 33
- VRF Configuration Mode 33
- DHCP Pool Configuration Mode 33
- Using Context-Sensitive Help 35
- Using Word Help 36
- Command Syntax Help 36
- Checking Command Syntax 37
- Recalling Commands 38
- Using the Editing Features 39
- Pasting in Buffer Entries 40
- Deleting Entries 41
- Controlling Capitalization 42
- Ending a Session 43
- Configuring Terminal Lines 45
- Preparing to Configure Lines 46
- Modem Control Process 49
- Closing Modem Connections 51
- Configuring Rotary Groups 52
- Front-Ending 53
- TCP Streams 53
- Specifying the Terminal Type 54
- Setting Character Padding 56
- Checking Password Examples 57
- Banner Message Example 59
- Port and Slot Configuration 62
- Configuring the BOOTP Server 65
- Configuring the ATM Address 66
- Configuring ATM Addressing 66
- ATM Interface 68
- Defining an IP address 72
- Defining Subnet Mask Bits 72
- Configuring Network Clocking 74
- • An OC-3 in a DSLAM chassis 78
- NI-2 Card Redundancy Overview 79
- Monitoring Redundancy States 83
- • An SNMP manager 85
- • An SNMP agent 85
- SNMP Notifications 86
- MIBs and RFCs 88
- SNMP Versions 89
- SNMP Configuration Task List 90
- Disabling the SNMP Agent 94
- Security Considerations 96
- SNMP Sessions 96
- SNMP Configuration Examples 97
- Standard MIB Modules 98
- Configuring SNMP Management 100
- Cisco Enterprise MIB Modules 101
- Storing the Configuration 104
- Testing the Configuration 104
- For example: 105
- Confirming the ATM Address 106
- Enabling and Disabling a Port 113
- Assigning Port Names 114
- Assigning Circuit IDs 115
- Configuring a Slot 119
- Using DSL Profiles 121
- Examples 122
- Copying a Profile 123
- Displaying a Profile 125
- Enabling and Disabling Alarms 126
- Defaults 132
- Setting DMT Minrate Blocking 134
- SHTU-C Interfaces 138
- DMT Interfaces 141
- CAP Interfaces 143
- Modifying the Operating Mode 153
- Setting SHTU-C Annex 158
- Configuring ATM ARP 168
- ESI Example 169
- Show ATM ARP Example 169
- Show ATM MAP Example 169
- Configuring MPLS VPN Mapping 175
- Benefits 176
- Supported MPLS Features 177
- Restrictions 178
- New Terminology for MPLS 179
- Configuration Prerequisites 180
- Configuration Tasks 180
- Command Usage Example 181
- Configuring Routing Sessions 185
- Verifying VPN Operation 187
- Configuration Samples 188
- Configuring NI-2 IP Services 195
- Configuring VPDN on the LAC 197
- Prerequisites 202
- DHCP Configuration Task List 202
- Excluding IP Addresses 203
- Configuring Manual Bindings 205
- Configuration Examples 208
- NetBIOS node type 209
- Configuration Task 210
- Encapsulation 211
- NAS-Port Attribute 214
- Configuring PPP 215
- Configuring PPPoA 216
- Configuring a RADIUS Server 218
- Configuring PVCs 218
- Configuring PPPoE on ATM 221
- PPPoE Stage Protocols 222
- configuration mode: 225
- NI-2 Subtending Support 228
- How IMA Works 233
- Supported Platforms 235
- Verifying the Trunk Interface 236
- Configuring T1/E1 Interfaces 236
- Verifying T1/E1 Interfaces 237
- Configuring IMA Interfaces 237
- Troubleshooting Tips 238
- Configuration Files 247
- Using Flash Memory 248
- BOOT Environment Variable 256
- BOOTLDR Environment Variable 256
- Control Environment Variables 256
- Formatting Flash Memory 257
- Managing Flash Files 258
- Using the Boot Field 262
- Setting the Boot Field 263
- Booting from Flash Memory 265
- Loading from a Network Server 267
- Correcting Bootup Problems 273
- Redundant NI-2 Card Operation 275
- Num Spare Sectors = 0 277
- Performing Prerequisite Tasks 282
- Configuring the Flash Server 283
- Configuring the Client DSLAM 283
- Verifying the Client DSLAM 284
- Using the rsh Protocol 286
- Maintaining rsh Security 286
- Using the rcp Protocol 287
- Numerics 295
- WAN interface 8-9 306
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