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sFlow Poll Configuration, System, sFlow

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Figure 6-124. sFlow Sampler Summary Configuring and Viewing sFlow Settings Using CLI Commands For information about the CLI commands that perform this function, see the following chapter in the CLI Reference Guide: • sFlow Commands. sFlow Poll Configuration The sFlow agent collects time-based sampling of network interface statistics and sends them to the configured sFlow receivers. A data source configured to collect counter samples is called a poller. Counter Sampling The primary objective of Counter Sampling is to efficiently, periodically export counters associated with Data Sources. A maximum Sampling Interval is assigned to each sFlow instance associated with a Data Source. Counter Sampling is accomplished as follows: The sFlow Agent keeps a list of counter sources being sampled. When a Packet Flow Sample is generated, the sFlow Agent examines the list and adds counters to the sample datagram, least recently sampled first. Counters are only added to the datagram if the sources are within a short period, i.e. five seconds, of failing to meet the required Sampling Interval. Periodically, i.e. every second, the sFlow Agent examines the list of counter sources and sends any counters that need to be sent to meet the sampling interval requirement. To access the sFlow Poll Configuration page, click System > sFlow > Poll Configuration in the navigation tree. Configuring System Information 251

Section	Page
User’s Guide	1
Introduction	17
Switching Features	20
Port-Based Features	22
Spanning Tree Protocol Features	25
IPv6	30
OSPFv3	31
Quality of Service Features	31
Multicast Features	32
CLI Documentation	34
Using Dell™ OpenManage™ Switch Administrator	35
Understanding the Interface	37
Check Boxes	43
Defining Fields	43
Accessing the Switch Through the CLI	43
Console Connection	44
Using the CLI	44
Cable and Port Information	47
Overview	47
Power Connection	50
Hardware Description	51
Overview	51
PowerConnect Front Panel	52
Console (RS-232) Port	55
Configuring Dell™ PowerConnect™	65
Overview	65
Starting the CLI	66
General Configuration Information	68
Baud Rate	68
Booting the Switch	69
Configuration Overview	75
Advanced Configuration	80
Boot Menu Functions	89
Delete Backup Image	93
Activate Backup Image	94
Sample Configuration Process	95
Switch Setup Requirements	95
Configuring System Information	105
Overview	105
Managing Logs	124
Setting the Operational Mode	132
Defining IP Addressing	134
Out of Band Interface	135
Running Cable Diagnostics	145
Managing Device Security	149
Captive Portal	188
Defining SNMP Parameters	209
File Management	231
Defining Advanced Settings	238
Defining Stacking	240
sFlow	247
Industry Standard Discovery Protocol	255
Configuring Switching Information	261
Overview	261
Configuring Ports	287
Configuring Traffic Mirroring	298
Configuring Address Tables	302
Configuring GARP	307
Configuring the Spanning Tree Protocol	310
Configuring VLANs	324
Configuring Voice VLAN	347
Aggregating Ports	349
Managing Multicast Support	355
IGMP Snooping	362
MRouter Status	371
MLD Snooping	372
Configuring the Link Layer Discovery Protocol (LLDP)	379
Creating Link Dependencies	386
Dynamic ARP Inspection	389
DHCP Snooping	397
DHCP Relay	410
Using the Port Aggregator Feature	416
Viewing Statistics and Remote Monitoring	423
Overview	423
Table Views	424
RMON	433
Charts	448
Configuring Routing	453
Overview	453
IP	458
OSPF	465
BOOTP/DHCP Relay Agent	499
IP Helper	502
RIP	509
Router Discovery	520
Router	523
VLAN Routing	533
VRRP	536
Tunnels	546
Loopbacks	551
Configuring IPv6	559
Overview	559
Global Configuration	560
Interface Configuration	561
Interface Summary	564
IPv6 Statistics	565
IPv6 Neighbor Table	570
DHCPv6	571
OSPFv3	586
IPv6 Routes	616
Configuring Quality of Service	623
Quality of Service Overview	623
Configuring Differentiated Services	624
Class of Service	641
Auto VoIP	650
Configuring IP Multicast	653
Overview	653
Multicast Listener Discovery	666
Distance Vector Multicast Routing Protocol	679
Internet Group Management Protocol	688
Protocol Independent Multicast-Dense Mode	703
Protocol Independent Multicast-Sparse Mode	716
Getting Help	731
Dell Enterprise Training and Certification	733
Problems With Your Order	733
Product Information	734
Returning Items for Warranty Repair or Credit	734
Before You Call	734

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Configuring System Information

251

Figure 6-124.

sFlow Sampler Summary

Configuring and Viewing sFlow Settings Using CLI Commands

For information about the CLI commands that perform this function, see the following chapter in the

CLI Reference Guide

•

sFlow Commands.

sFlow Poll Configuration

The sFlow agent collects time-based sampling of network interface statistics and sends them to the

configured sFlow receivers. A data source configured to collect counter samples is called a poller.

Counter Sampling

The primary objective of Counter Sampling is to efficiently, periodically export counters associated with

Data Sources. A maximum Sampling Interval is assigned to each sFlow instance associated with a Data

Source.

Counter Sampling is accomplished as follows:

The sFlow Agent keeps a list of counter sources being sampled. When a Packet Flow Sample is

generated, the sFlow Agent examines the list and adds counters to the sample datagram, least recently

sampled first. Counters are only added to the datagram if the sources are within a short period, i.e. five

seconds, of failing to meet the required Sampling Interval. Periodically, i.e. every second, the sFlow Agent

examines the list of counter sources and sends any counters that need to be sent to meet the sampling

interval requirement.

To access the

sFlow Poll Configuration

page, click

System

sFlow

Poll Configuration

in the

navigation tree.