3Com CoreBuilder 3500, Руководство по внедрению, Страница: 484 / 592

484 C
HAPTER
17: Q
O
S
AND
RSVP
Figure 82
Predefined Classifiers and Associated Controls
Assigning Flow and
Nonflow Classifier
Numbers
Each classifier requires a unique number in the range 1 to 498. When you
define a classifier, the first information you supply is the classifier number.
The number you specify dictates which type of classifier you are defining.
Default
The default classifier number is 499, which you cannot remove or modify.
This is because all traffic passes through the QoS engine and the system
needs a classifier to handle all packets.
■
If you want to define a flow classifier (for routed IP packets only),
specify a value in the range of from
1 to 399 . This allows you to
specify IP source and/or destination addresses as well as TCP or UDP
socket information.
■
If you want to define a nonflow classifier (for bridged or routed
packets), specify a value in the range of from
400 to 498 . (See the list
of predefined nonflow classifiers in Figure 82.) For nonflow classifiers,
you cannot classify to the IP address or socket level.
Flow
Classifier Name Control Cast Protocol 802.1p
20 FTP none UM TCP --
23 Telnet Traffic none UM TCP --
401 Background 2 UMB any 1
402 Standard 2 UMB any 2
403 Business Critical 3 UMB any 3
404 Streaming Multimedia 4 UMB any 4
405 Interactive Multimedia 4 UMB any 5
406 Interactive Voice 4 UMB any 6
407 Network Control 4 UMB any 7
420 TCP/IP none U TCP/IP 0-7
430 IP Unicast none U IP 0-7
440 IP Multicast none M IP 0-7
450 IP Broadcast none B IP 0-7
460 IPX Unicast none U IPX 0-7
470 IPX Multicast/Broadcast none MB IPX 0-7
480 Appletalk Unicast none U Appletalk 0-7
490 Appletalk Multicast/Broadcast none MB Appletalk 0-7
499 Default 1 UMB any 0-7
Nonflow