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Document No. 650-100-700, Issue 1
25-7
80-Series QoS
Classification of Traffic
The switch assigns traffic to one of eight queues according to the priority, or
“class,” of the traffic. Priorities range 0 to 7, 7 being the highest priority.
You can set the switch to classify traffic by the priority assigned to the
following characteristics:
■
Layer 2 characteristics:
—
Physical port that the frame or packet is received on
—
Cisco ISL tag or 802.1p tag
—
Source MAC address
—
Destination MAC address
■
Layer 3 characteristics:
—
DSCP in the packet
—
New DSCP that replaces the original DSCP. You specify this
new DSCP.
—
IP protocol (assigned by means of an ACL rule)
—
Destination IP address (assigned by means of an ACL rule)
—
Source IP address (assigned by means of an ACL rule)
■
Layer 4 characteristics:
—
Destination TCP or UDP port (assigned by means of an ACL
rule)
—
Source TCP or UDP port (assigned by means of an ACL rule)
Default Priority
By default, the switch uses the priority from the 802.1p tag field, if present,
to classify a frame.
If you do not change any of the QoS default settings and the frame does not
have an 802.1 tag or Cisco ISL tag, the switch assigns the priority of the
physical port to the packet. Each physical port has a default priority of 3.
For information on how to change the priority for a physical port, see
“
Setting the Priority of a Physical Port
” later in this chapter.
Содержание Cajun P580
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Страница 323: ...Document No 650 100 700 Issue 1 12 7 Configuring IP Routing Figure 12 3 Add IP Interface Web Screen...
Страница 419: ...Document No 650 100 700 Issue 1 13 9 Configuring Access Lists Figure 13 3 IP Extended Access Rule Creation Dialog Box...
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Страница 728: ...Appendix B B 4 User Guide for the Avaya P580 and P882 Multiservice Switches v6 0...