Reference: Ipqos And Modified Ieee 802.1P To Switch Queue Mapping - ZyXEL Communications MSC1000G User Manual

Table 184 IPQoS Profile (continued)
LABEL
Queue Id
PIR
CIR
PBS
CBS
Level
Weight
Apply
New
Cancel
Index
Name
Modify
Delete
11.23.5 Reference: IPQoS and Modified IEEE 802.1p to Switch Queue
Mapping
Changing the IEEE 802.1p to switch queue mapping is not recommended since it may result in
unexpected queuing behavior. This is because even if you change the mapping between the IEEE
802.1p priorities and the switch queues, the system still uses the same mapping between the
switch queues and the IPQoS profile queues. Here are some examples.
Management Switch Card User's Guide
DESCRIPTION
This is the index number of queues listed in the following table according to what you selected in
the Number of Queues field.
PIR is Peak Information Rate. Enter the maximum data rate (128~32768 kbps) allowed to flow
through this device at peak hour. You must enter the number which is a multiple of 64. See
Section 11.23 on page 385
CIR is Committed Information Rate. Enter the maximum data rate (64~65532 kbps) guaranteed
to flow through this device all the time. You must enter the number which is a multiple of 64.
See Section 11.23 on page 385
Note: CIR < PIR <= two times of CIR in a queue. For example, CIR is 1024, you must enter the
PIR in the same queue equal or less than 2048 (2 x 1024).
PBS is Peak Burst Size. Enter the maximum packet size (3072~65536 bytes) allowed to flow
through this device at peak hour. You must enter the number which is a multiple of 256. See
Section 11.23 on page 385
CBS is Committed Burst Size. Enter the maximum packet size (3072~65536 bytes) guaranteed
to flow through this device all the time. You must enter the number which is a multiple of 256.
See Section 11.23 on page 385
Note: The CBS should be equal to or less than PBS in a queue.
Set the queue's priority level. The larger the number, the higher the priority.
You can configure different IPQoS profiles with queues that have the same queue priority level.
IPQoS then uses Weighted Round Robin (WRR) scheduling to service these queues on a rotating
basis based on their queue weight. Use these fields to set the priority weight (1~127) of each
queue in an IPQoS profile. The higher a queue's weight, the more service it gets.
Click Apply to save the changes in this screen to the system's volatile memory. The system
loses these changes if it is turned off or loses power, so use the Config Save link on the
navigation panel and then the Save button to save your changes to the non-volatile memory
when you are done configuring.
While you are modifying a profile, you can click New to start configuring a fresh profile without
saving your changes.
Click Cancel to start configuring the screen again.
This is the index number of the IPQoS profile.
This is the name of the IPQoS profile.
Select a profile's Select radio button and click Modify to edit the profile.
Select a profile's Select radio button and click Delete to remove the profile.
for more information.
for more information.
for more information.
for more information.
Chapter 11 Profile Screens
401