3Com 4007, Руководство по внедрению, Страница: 580 / 684

580 C
HAPTER
22: Q
O
S
AND
RSVP
Defining NonFlow
Classifiers
Nonflow classifiers enable you to classify bridged or routed frames
according to protocol, cast type, and IEEE 802.1p priority tag values. You
can define up to 16 nonflow classifiers per Multilayer Switching Module.
The module predefines 16 nonflow classifiers for you. Therefore, to
define your own nonflow classifier, you must first delete one of the
predefined nonflow classifiers.
NonFlow Classifier Information
You supply the following information when you define a nonflow
classifier:
■
A classifier number in the range of from 400 through 498. (401
through 407, 420, 430, 440, 450, 460, 470, 480, and 490 are
predefined.)
■
A classifier name (a unique name of up to 32 characters long)
■
A cast type (unicast, multicast, broadcast, or all)
■
A protocol type (TCP/IP, IP, IPX, AppleTalk, any or custom)
If you choose
custom,
select the protocol type (ethernet or
DSAP/SSAP)
■
For ethernet type enter the hexadecimal value
■
For DSAP/SSAP type enter the DSAP and SSAP hexadecimal values
■
An IEEE 802.1p tag value in the range of from 0 through 7 or all. You
can make the Multilayer Switching Module recognize any IEEE 802.1p
tagged frames with any combination of the priority tags in the range
of from 0 through 7. The tag value is automatically used by the
associated control when it forwards frames. See “IEEE 802.1p” earlier
in this chapter for more information on the tag values.
For example, you may create a nonflow classifier for your bridged
AppleTalk traffic, assign it a cast type of broadcast, a protocol type of
AppleTalk, and an IEEE 802.1p tag value of all. You can then apply a
control to this classifier to assign a rate limit, service level, and
IEEE 802.1p tag to apply to forwarded frames.
For examples of how to define nonflow classifiers and their associated
controls for specific scenarios, see “Examples of Classifiers and Controls”
later in this chapter.