Cabletron Systems SSIM-R8-02 Specifikace stáhnout pdf (Strana 379)

Enterasys Xpedition User Reference Manual 359

WAN Overview

For example, if you want to apply a source MAC address filter to a WAN serial card

located in slot 5, port 2, your configuration command line would look like the following:

Port se.5 is specified instead of se.5.2 because source filters affect the entire WAN module.

Hence, in this example, source-mac 000102:030405 would be filtered from ports se.5.1,

se.5.2, se.5.3, and se.5.4 (assuming that you are using a four-port serial card).

ACLs work in a similar fashion. For example, if you define an ACL to deny all http traffic

on one of the WAN interfaces, it will apply to the other WAN interfaces on that module as

well. In practice, by making your ACLs more specific, for example by specifying source

and destination IP addresses with appropriate subnet masks, you can achieve your

intended level of control.

Weighted-Fair Queueing

Through the use of Weighted-Fair Queueing QoS policies, WAN packets with the highest

priority can be allotted a sizable percentage of the available bandwidth and “whisked

through” WAN interface(s). Meanwhile, the remaining bandwidth is distributed for

“lower-priority” WAN packets according to the user’s percentage-of-bandwidth

specifications. Please refer to Chapter 35: “qos Commands” in the Enterasys Xpedition

Command Line Interface Reference Manual for more detailed configuration information.

Note: Weighted-Fair Queueing applies only to best-effort traffic on the WAN card. If

you apply any of the WAN specific traffic shaping commands, then weighted fair

queuing will no longer be applicable.

Congestion Management

One of the most important features of configuring the XP to ensure Quality of Service is

the obvious advantage gained when you are able to avoid network congestion. The

following topics touch on a few of the most prominent aspects of congestion avoidance

when configuring the XP.

ssr(config)# filters add address-filter name wan1 source-mac 000102:030405 vlan 2 in-port-list se.5

1 2 ... 374 375 376 377 378 379 380 381 382 383 384 ... 393 394

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Cabletron Systems SSIM-R8-02 Specifikace Strana 379