Dell PowerConnect M6348 User manual

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Dell™ PowerConnect™
M6220/M6348/M8024 Switches
Configuration Guide
Model PCM6220/PCM6348/PCM8024

Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your switch.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the
problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury, or death.
____________________
Information in this document is subject to change without notice.
© 2009 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly forbidden.
Trademarks used in this text: Dell, Dell OpenManage, the DELL logo, Inspiron, Dell Precision, Dimension, OptiPlex, PowerConnect,
PowerApp, PowerVault, Axim, DellNet, and Latitude are trademarks of Dell Inc.; Microsoft, Windows, and Windows Vista are either trademarks
or registered trademarks of Microsoft Corporation in the United States and/or other countries. Procomm Plus is a registered trademark of
Symantec Corporation or its affiliates in the U.S. and other countries.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products.
Dell Inc. disclaims any proprietary interest in trademarks and trade names other than its own.
Model PCM6220/PCM6348/PCM8024
June 2009 Rev. A00

3
Contents
1 About this Document . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Additional Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Traceroute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Configuration Scripting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Outbound Telnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Simple Network Time Protocol (SNTP) . . . . . . . . . . . . . . . . . . . . . 17
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Syslog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Port Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Storm Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
10GBASE-T Plug-in Module Configuration . . . . . . . . . . . . . . . . . . . 23
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

4
3 Switching Configuration. . . . . . . . . . . . . . . . . . . . . . . . . 25
Virtual LANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
VLAN Configuration Example . . . . . . . . . . . . . . . . . . . . . . . . 26
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Web Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
IP Subnet and MAC-Based VLANs . . . . . . . . . . . . . . . . . . . . . 29
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Protocol-Based VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Private Edge VLANs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
IGMP Snooping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
IGMP Snooping Querier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Link Aggregation/Port Channels. . . . . . . . . . . . . . . . . . . . . . . . . 35
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Web Interface Configuration: LAGs/Port-channels . . . . . . . . . . . . 38
Port Mirroring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Port Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Link Layer Discovery Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 40
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Denial of Service Attack Protection. . . . . . . . . . . . . . . . . . . . . . . 42
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
DHCP Snooping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Port Aggregator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Simple Mode Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Simple Switch Mode Supported CLI Commands . . . . . . . . . . . . . . 59
sFlow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
sFlow Agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
4 Routing Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 67
VLAN Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Using the Web Interface to Configure VLAN Routing . . . . . . . . . . . 70
Virtual Router Redundancy Protocol . . . . . . . . . . . . . . . . . . . . . . 70
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Using the Web Interface to Configure VRRP . . . . . . . . . . . . . . . . 73
Proxy Address Resolution Protocol (ARP). . . . . . . . . . . . . . . . . . . . 73
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
OSPF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
OSPF Concepts and Terms . . . . . . . . . . . . . . . . . . . . . . . . . 74
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Routing Information Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 84
RIP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Using the Web Interface to Configure RIP . . . . . . . . . . . . . . . . . 87
Route Preferences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Assigning Administrative Preferences to Routing Protocols. . . . . . . . 87
Using Equal Cost Multipath . . . . . . . . . . . . . . . . . . . . . . . . . 89
Loopback Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
IP Helper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
5 Device Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
802.1x Network Access Control . . . . . . . . . . . . . . . . . . . . . . . . . 97

6
802.1x Network Access Control Examples . . . . . . . . . . . . . . . . . 98
802.1X Authentication and VLANs . . . . . . . . . . . . . . . . . . . . . . . 100
Authenticated and Unauthenticated VLANs . . . . . . . . . . . . . . . 100
Guest VLAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
802.1x MAC Authentication Bypass (MAB) . . . . . . . . . . . . . . . . . . 103
Operation in the Network . . . . . . . . . . . . . . . . . . . . . . . . . 103
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Authentication Server Filter Assignment . . . . . . . . . . . . . . . . . . . 105
Access Control Lists (ACLs) . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
MAC ACLs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
IP ACLs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
ACL Configuration Process . . . . . . . . . . . . . . . . . . . . . . . . 108
IP ACL CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
MAC ACL CLI Examples. . . . . . . . . . . . . . . . . . . . . . . . . . 110
RADIUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
RADIUS Configuration Examples . . . . . . . . . . . . . . . . . . . . . 113
TACACS+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
TACACS+ Configuration Example . . . . . . . . . . . . . . . . . . . . . 116
Captive Portal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Captive Portal Configuration, Status and Statistics . . . . . . . . . . . 118
Captive Portal Status . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Captive Portal Statistics . . . . . . . . . . . . . . . . . . . . . . . . . 122
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
6IPv6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Interface Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
DHCPv6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131

7
7 Quality of Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Class of Service Queuing . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Ingress Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . 133
Egress Port Configuration—Traffic Shaping . . . . . . . . . . . . . . . 134
Queue configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Queue Management Type . . . . . . . . . . . . . . . . . . . . . . . . 134
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Differentiated Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
DiffServ for VoIP Configuration Example . . . . . . . . . . . . . . . . . 140
8 Multicast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
IGMP Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
IGMP Proxy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
DVMRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
CLI Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
PIM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
PIM-SM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
PIM-DM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
9 Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Auto Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . 151
CLI Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157

8

About this Document 9
1
About this Document
This configuration guide provides examples of how to use the following switches in a typical
network:
• Dell™ PowerConnect™ M6220
•DellPowerConnectM6348
•DellPowerConnectM8024
It describes the advantages of specific functions the PowerConnect M6220/M6348/M8024 switches
and provides and includes information about configuring those functions using the command line
interface (CLI).
Organization
This document is organized as follows:
• "System Configuration" on page 11 describes how to configure basic system and port settings, use
system interfaces and utilities, and create and use CLI scripts.
• "Switching Configuration" on page 25 provides configuration scenarios for layer 2 switching,
including creating virtual local area networks (VLANs) and Internet Group Management Protocol
(IGMP) snooping interfaces, and enabling port security.
• "Routing Configuration" on page 67 provides configuration scenarios for layer 3 features such as
VLAN routing, Open Shortest Path First (OSPF), and Routing Information Protocol (RIP).
• "Device Security" on page 97 provides information on creating access control lists and configuring
RADIUS and TACACS+ servers.
• "IPv6" on page 127 describes configuring and using IPv6-enabled interfaces in a mixed IPv6/IPv4
network.
• "Quality of Service" on page 133 provides configuration scenarios for class-of-service (CoS)
queueing and differentiated services (DiffServ).
• "Multicast" on page 143 describes how to configure IGMP, IGMP proxy, Distance Vector Multicast
Routing Protocol (DVMRP), and Protocol Independent Multicast (PIM) on the switch.
• "Utility" on page 151 describes commands used to manage the switch.

10 About this Document
Additional Documentation
The following documentation provides additional information about PowerConnect
M6220/M6348/M8024 software:
•The CLI Command Reference for your Dell PowerConnect switch describes the commands available
from the command-line interface (CLI) for managing, monitoring, and configuring the switch.
•The
User’s Guide for your Dell PowerConnect switch describes the Web GUI. Many of the scenarios
described in this document can be fully configured using the Web interface. This guide also provides
initial system setup and configuration instructions.
•The
Getting Started Guide for your Dell PowerConnect switch provides basic information to install,
configure, and operate the system.
• Release notes for your Dell PowerConnect product detail the platform-specific functionality of the
software packages, including issues and workarounds.

System Configuration 11
2
System Configuration
This section provides configuration scenarios for the following features:
•"Traceroute"onpage11
• "Configuration Scripting" on page 13
• "Outbound Telnet" on page 16
• "Simple Network Time Protocol (SNTP)" on page 17
• "Syslog" on page 19
• "Port Description" on page 21
• "Storm Control" on page 21
• "10GBASE-T Plug-in Module Configuration" on page 23
NOTE: For information on setting up the hardware and serial or TFTP connection, refer to the Getting Started
Guide
for your system.
Traceroute
Use Traceroute to discover the routes that packets take when traveling on a hop-by-hop basis to their
destination through the network.
• Maps network routes by sending packets with small Time-to-Live (TTL) values and watches the
ICMP time-out announcements
• Command displays all L3 devices
• Can be used to detect issues on the network
• Tracks up to 30 hops
• Default UDP port uses 33434 unless modified in the traceroute command

12 System Configuration
CLI Example
The following shows an example of using the traceroute command to determine how many hops there
are to the destination. The command output shows each IP address the packet passes through and how
long it takes to get there. In this example, the packet takes 16 hops to reach its destination.
console#traceroute ?
ip Enter IP Address.
ipv6 Use keyword 'ipv6' if entering IPv6 Address.
console#traceroute 72.14.253.99
Traceroute to 72.14.253.99 ,30 hops max 0 byte packets:
1 10.131.10.1 <10 ms <10 ms <10 ms
2 210.210.108.193 <10 ms 10 ms <10 ms
3 192.168.81.1 <10 ms 10 ms <10 ms
4 210.214.5.161 <10 ms 10 ms 10 ms
5 210.214.5.169 <10 ms <10 ms 10 ms
6 124.7.202.2 10 ms <10 ms <10 ms
7 210.18.7.166 40 ms 30 ms 30 ms
8 202.144.2.193 30 ms 30 ms 30 ms
9 202.144.113.151 30 ms 40 ms 30 ms
10 72.14.196.97 40 ms 30 ms 100 ms
11 216.239.43.216 40 ms 40 ms 30 ms
12 216.239.43.209 60 ms 40 ms 40 ms
13 216.239.43.222 40 ms 50 ms 50 ms
14 216.239.43.221 100 ms 110 ms 100 ms
15 209.85.250.88 130 ms 130 ms 120 ms
16 209.85.250.105 130 ms 120 ms 130 ms
17 209.85.250.91 160 ms 160 ms 160 ms
18 216.239.47.237 290 ms 240 ms 250 ms
19 216.239.46.211 240 ms 270 ms 250 ms
--More-- or (q)uit
20 64.233.174.99 250 ms 240 ms 250 ms
Hop Count = 20 Last TTL = 30 Test attempt = 90 Test Success = 90

System Configuration 13
Configuration Scripting
Configuration scripting allows you to generate a text-formatted script file that shows the current system
configuration. You can generate multiple scripts and upload and apply them to more than one switch.
Overview
Configuration scripting:
• Provides scripts that can be uploaded from and downloaded to the system.
• Provides flexibility to create command configuration scripts.
• Can be applied to several switches.
• Can save up to ten scripts up to a maximum size of 2 MB of memory.
• Provides List, Delete, Apply, Upload, Download.
• Provides script format of one CLI command per line.
NOTE: The startup-config and backup-config scripts are not bound by the 2 MB memory limit.
Considerations
When you use configuration scripting, keep the following considerations in mind:
• The total number of scripts stored on the system is limited by NVRAM/FLASH size.
• The application of scripts is partial if the script fails. For example, if the script executes five of ten
commands and the script fails, the script stops at five.
• Scripts cannot be modified or deleted while being applied.
• Validation of scripts checks for syntax errors only. It does not validate that the script will run.
CLI Examples
The following are examples of the commands used for configurations scripting.
Example #1: Viewing the Script Options
console#script ?
apply Applies configuration script to the switch.
delete Deletes a configuration script file from the switch.
list Lists all configuration script files present on the switch.
show Displays the contents of configuration script.
validate Validate the commands of configuration script.

14 System Configuration
Example #2: Viewing and Deleting Existing Scripts
console#script list
Configuration Script Name Size(Bytes)
-------------------------------- -----------
abc.scr 360
running-config 360
startup-config 796
test.scr 360
4 configuration script(s) found.
2046 Kbytes free.
console#script delete test.scr
Are you sure you want to delete the configuration script(s)? (y/n)y
1 configuration script(s) deleted.
Example #3: Applying a Script to the Active Configuration
console#script apply abc.scr
Are you sure you want to apply the configuration script? (y/n)y
.....
....
Configuration script 'abc.scr' applied.
Example #4: Copying the Active Configuration into a Script
Use this command to capture the running configuration into a script.
console#show running-config running-config.scr
Config script created successfully.

System Configuration 15
Example #5: Uploading a Configuration Script to the TFTP Server
Use this command to upload a configuration script to the TFTP server.
console#copy script abc.scr tftp://10.27.64.141/abc.scr
Mode........................................... TFTP
Set TFTP Server IP............................. 10.27.64.141
TFTP Path...................................... ./
TFTP Filename.................................. abc.scr
Data Type...................................... Config Script
Source Filename................................ abc.scr
Management access will be blocked for the duration of the transfer
Are you sure you want to start? (y/n) y
267 bytes transferred
File transfer operation completed successfully.
Example #6: Downloading a Configuration Script to the TFTP Server
Use this command to download a configuration script from the TFTP server to the switch.
console#copy tftp://10.27.64.141/abc.scr script abc.scr
Mode........................................... TFTP
Set TFTP Server IP............................. 10.27.64.141
TFTP Path...................................... ./
TFTP Filename.................................. abc.scr
Data Type...................................... Config Script
Destination Filename........................... abc.scr
Management access will be blocked for the duration of the transfer
Are you sure you want to start? (y/n) y
193 bytes transferred
Validating configuration script...
configure
exit
configure
logging web-session
bridge aging-time 100
exit
Configuration script validated.
File transfer operation completed successfully.

16 System Configuration
Example #7: Validating a Script
console#script validate abc.scr
ip address dhcp
username "admin" password 16d7a4fca7442dda3ad93c9a726597e4 level 15 encrypted
exit
Configuration script 'abc.scr' validated.
console#script apply abc.scr
Are you sure you want to apply the configuration script? (y/n)y
ip address dhcp
username "admin" password 16d7a4fca7442dda3ad93c9a726597e4 level 15 encrypted
exit
Configuration script 'abc.scr' applied.
Outbound Telnet
Overview
Outbound telnet:
• Establishes an outbound telnet connection between a device and a remote host.
• When a telnet connection is initiated, each side of the connection is assumed to originate and
terminate at a “Network Virtual Terminal” (NVT).
• Server and user hosts do not maintain information about the characteristics of each other’s terminals
and terminal handling conventions.
• Must use a valid IP address.
CLI Examples
The following are examples of the commands used in the outbound telnet feature.
Example #1: Connecting to Another System by Using Telnet
console#telnet 192.168.77.151
Trying 192.168.77.151...
console#
User:admin
Password:
(Remote Switch) >enable
Password:
console#show ip interface
Management Interface:

System Configuration 17
IP Address..................................... 10.27.65.89
Subnet Mask.................................... 255.255.254.0
Default Gateway................................ 10.27.64.1
Burned In MAC Address.......................... 00FF.F2A3.6688
Network Configuration Protocol Current......... DHCP
Management VLAN ID............................. 4086
Routing Interfaces:
Netdir Multi
Interface IP Address IP Mask Bcast CastFwd
---------- --------------- --------------- -------- --------
Simple Network Time Protocol (SNTP)
Overview
The SNTP implementation has the following features:
• Used for synchronizing network resources
•AdaptationofNTP
• Provides synchronized network timestamp
• Can be used in broadcast or unicast mode
• SNTP client implemented over UDP that listens on port 123
CLI Examples
The following are examples of the commands used in the SNTP feature.
Example #1: Viewing SNTP Options
(Dell Routing)(Config) #sntp ?
console(config)#sntp ?
authenticate Require authentication for received Network Time
Protocol (NTP) traffic from servers.
authentication-key
Define an authentication key for Simple Network Time
Protocol (SNTP).
broadcast Configure SNTP client broadcast parameters.
client Configure the SNTP client parameters.
server Configure SNTP server parameters.
trusted-key Authenticate the identity of a system to which
SNTP will synchronize.
unicast Configure SNTP client unicast parameters.

18 System Configuration
Example #2: Configuring the SNTP Server
console(config)#sntp server ?
<ipaddress/domain-name> Enter SNTP server address or the domain name.
console(config)#sntp server 192.168.10.25 ?
key Authentication key to use when sending packets to
this peer.
poll Enable/Disable SNTP server polling.
priority Configure SNTP server priority.
<cr> Press enter to execute the command.
console(config)#sntp server 192.168.10.25
Example #3: Viewing SNTP Information
console#show sntp ?
configuration Show the configuration of the Simple Network Time
Protocol (SNTP).
status To show the status of the Simple Network Time
Protocol (SNTP).
console#show sntp configuration
Polling interval: 64 seconds
MD5 Authentication keys:
Authentication is not required for synchronization.
Trusted keys:
No trusted keys.
Unicast clients: Enable
Unicast servers:
Server Key Polling Priority
--------- ----------- ----------- ----------
192.168.0.1 Disabled Enabled 1
console#show sntp status
Client Mode: Unicast
Last Update Time: JUN 08 20:26:02 2009
Unicast servers:
Server Status Last response
--------- ----------- --------------------------
192.168.10.25 Unknown 00:00:00 Jan 1 1970

System Configuration 19
Syslog
Overview
Syslog:
• Allows you to store system messages and/or errors.
• Can store to local files on the switch or a remote server running a syslog daemon.
• Provides a method of collecting message logs from many systems.
Interpreting Log Files
Figure 2-1 describes the information that displays in log messages.
Figure 2-1. Log Files Key
CLI Examples
The following are examples of the commands used in the Syslog feature.
Example #1: Viewing Logging Information
console#show logging
Logging is enabled
Console Logging: level warning. Console Messages: 230 Dropped.
Buffer Logging: level info. Buffer Messages: 230 Logged.
File Logging: level notActive. File Messages: 0 Dropped.
CLI Command Logging : disabled
Web Session Logging : disabled
<130> JAN 01 00:00:06 0.0.0.0-1 UNKN [0x800023]: bootos.c(386) 4 %% Event (0xaaaaaa aa)
A. Priority
B. Timestamp
C. Stack ID
D. Component Name
E. Thread ID
F. File Name
G. Line Number
H Sequence Number
I. Message
AB
C DEF GH I

20 System Configuration
SNMP Set Command Logging : disabled
0 Messages were not logged.
Buffer Log:
<189> JAN 01 03:57:58 10.27.65.86-1 TRAPMGR[216282304]: traputil.c(908) 31 %%
Instance 0 has elected a new STP root: 8000:00ff:f2a3:8888
<189> JAN 01 03:57:58 10.27.65.86-1 TRAPMGR[216282304]: traputil.c(908) 32 %%
Instance 0 has elected a new STP root: 8000:0002:bc00:7e2c
<189> JAN 01 04:04:18 10.27.65.86-1 TRAPMGR[231781808]: traputil.c(908) 33 %% New
Spanning Tree Root: 0, Unit: 1
<189> JAN 01 04:04:18 10.27.65.86-1 TRAPMGR[216282304]: traputil.c(908) 34 %% The
unit 1 elected as the new STP root
Example #2: Viewing the Logging File
console#show logging file
Persistent Logging : disabled
Persistent Log Count : 0
Example #5: Configuring Syslog Server
console(config)#logging ?
buffered Buffered (In-Memory) Logging Configuration.
cli-command CLI Command Logging Configuration.
console Console Logging Configuration.
facility Syslog Facility Configuration.
file Configure logging file parameters.
on Enable logging to all supporting destinations.
snmp SNMP Set Command Logging Configuration.
web-session Web Session Logging Configuration.
<ip-address|hostname> Configure syslog server IP address or Hostname up to
63 characters in length
console(config)#logging 192.168.10.65
console(Config-logging)#?
description Specify syslog server description.
exit To exit from the mode.
level Specify logging level.
port Specify UDP port (default is 514).
console(Config-logging)#level ?
alert Immediate action needed
critical Critical conditions
debug Debugging messages
emergency System is unusable