Cabletron Systems SSIM-R8-02 Specifikace stáhnout pdf (Strana 358)

Using RMON

338 Enterasys Xpedition User Reference Manual

A row in the control table is created for each port on the XP, with the owner set to

“monitor”. If you want, you can change the owner by using the appropriate rmon

command. See the section Configuring RMON Groups in this chapter for more the

command to configure a specific group.

Note: Control tables other than the default control tables must be configured with CLI

commands, as described in Configuring RMON Groups.

Using RMON

RMON on the XP allows you to analyze network traffic patterns, set up alarms to detect

potential problems before they turn into real congestive situations, identify heavy

network users to assess their possible candidacy for moves to dedicated or higher speed

ports, and analyze traffic patterns to facilitate more long-term network planning.

RMON 1 provides layer 2 information. Traffic flowing through the XP’s layer 2 ASIC is

collected by RMON 1 groups. RMON 2 in the XP provides layer 3 traffic information for

IP and IPX protocols. Traffic flowing through the XP’s layer 3 ASIC is collected by RMON

2 groups. The XP’s RMON 2 protocol directory contains over 500 protocols that can be

decoded for UDP and TCP ports. You can use RMON to see the kinds of protocol traffic

being received on a given port.

For example, use the rmon show protocol-distribution command to see the kinds of

traffic received on a given port:

In the example output above, only HTTP and ICMP traffic is being received on this port.

ssr# rmon show protocol-distribution et.5.5

RMON II Protocol Distribution Table

Index: 506, Port: et.1.7, Owner: monitor

Pkts Octets Protocol

---- ------ --------

19 1586 ether2

19 1586 ether2.ip-v4

19 1586 *ether2.ip-v4

2 192 *ether2.ip-v4.icmp

17 1394 *ether2.ip-v4.tcp

17 1394 *ether2.ip-v4.tcp.www-http

1 2 ... 353 354 355 356 357 358 359 360 361 362 363 ... 393 394

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Cabletron Systems SSIM-R8-02 Specifikace Strana 358