Examples ............................................................................................................................................. 17-18

Chapter 18: Configuring Network Monitoring

Basic Network Monitoring Features .............................................................................................................. 18-1

Console/Telnet History Buffer ................................................................................................................ 18-1

Network Diagnostics .............................................................................................................................. 18-2

Switch Connection Statistics .................................................................................................................. 18-2

Users ...................................................................................................................................................... 18-3

RMON ........................................................................................................................................................... 18-3

RMON Design Considerations ............................................................................................................... 18-4

Configuring RMON ................................................................................................................................. 18-5

sFlow ............................................................................................................................................................ 18-9

Using sFlow in Your Network ............................................................................................................... 18-10

Definitions ............................................................................................................................................ 18-10

sFlow Agent Functionality .................................................................................................................... 18-11

Sampling Mechanisms ......................................................................................................................... 18-11

Packet Flow Sampling .................................................................................................................... 18-11

Counter Sampling ........................................................................................................................... 18-11

Sampling Implementation Notes..................................................................................................... 18-12

Configuring sFlow ................................................................................................................................ 18-12

Overview......................................................................................................................................... 18-12

Procedure ....................................................................................................................................... 18-14

Chapter 19: Configuring Multicast

Using Multicast in Your Network ................................................................................................................... 19-1

Implementing Multicast .......................................................................................................................... 19-1

Multicast Operation ................................................................................................................................ 19-2

Internet Group Management Protocol (IGMP) ....................................................................................... 19-2

Overview........................................................................................................................................... 19-2

IGMP Support on Enterasys Devices ............................................................................................... 19-3

Example: Sending a Multicast Stream.............................................................................................. 19-4

Distance Vector Multicast Routing Protocol (DVMRP) ........................................................................... 19-5

Overview........................................................................................................................................... 19-5

DVMRP Support on Enterasys Devices ........................................................................................... 19-5

Protocol Independent Multicast (PIM) .................................................................................................. 19-11

Overview......................................................................................................................................... 19-11

PIM Support on Enterasys Devices................................................................................................ 19-13

PIM Terms and Definitions ............................................................................................................. 19-14

Configuring IGMP ....................................................................................................................................... 19-15

Basic IGMP Configuration .................................................................................................................... 19-17

Example IGMP Configuration on Layer 3 ....................................................................................... 19-17

IGMP Display Commands .................................................................................................................... 19-18

Configuring DVMRP ................................................................................................................................... 19-18

DVMRP Configuration Commands ...................................................................................................... 19-18

Basic DVMRP Configuration ................................................................................................................ 19-19

Example DVMRP Configuration ..................................................................................................... 19-19

Displaying DVMRP Information ............................................................................................................ 19-20

Configuring PIM-SM ................................................................................................................................... 19-21

Design Considerations ......................................................................................................................... 19-21

PIM-SM Configuration Commands ...................................................................................................... 19-21

Basic PIM-SM Configuration ................................................................................................................ 19-22

Example Configuration ................................................................................................................... 19-22

PIM-SM Display Commands ................................................................................................................ 19-24

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Table of Contents