| Scheduler
Summary |
|
Scheduler Name
|
Displays the names of defined schedulers.
Allows you to edit a specific scheduler.
|
To edit a scheduler, click its name.
|
|
Scheduler Information
|
Displays a summary of defined settings for a scheduler, such
as bandwidth, delay buffer size, transmit and shaping rates, and RED
drop profiles.
|
None.
|
|
Add
|
Opens a page that allows you to adds a scheduler.
|
To add a scheduler, click Add.
|
|
Delete
|
Removes a scheduler.
|
To remove a scheduler, select it and click Delete.
|
| Add
a Scheduler/Edit Scheduler |
|
Scheduler Name
|
Specifies the name for a scheduler.
|
To name a scheduler, type the name—for example, be-scheduler.
|
|
Buffer Size
|
Defines the size of the delay buffer.
The delay buffer bandwidth provides packet buffer space to absorb
burst traffic up to the specified duration of delay.
By default, queues 0 through 7 have the following percentage
of the total available buffer space:
- Queue 0—95 percent
- Queue 1—0 percent
- Queue 2—0 percent
- Queue 3—5 percent
- Queue 4—0 percent
- Queue 6—0 percent
- Queue 7—0 percent
Note:
A large buffer size value means a greater possibility for delaying
packets in the network. This might not be practical for sensitive
traffic such as voice or video.
|
To define a delay buffer size for a scheduler, select the appropriate
option:
- To specify no buffer size, select Unconfigured.
- To specify buffer size as a percentage of the total buffer,
select Percent and type an integer from 1 through
100.
- To specify buffer size as the remaining available buffer,
select Remainder.
- To specify buffer size in microseconds, select Temporal, and type an integer within the range of
the buffer size available to you on your platform—for example, 8192.
|
|
Drop Profile Map
|
Sets the drop profile for a specific packet loss priority (PLP)
and protocol type.
By default, the drop profile is assigned to packets with low
PLP, regardless of protocol type.
|
To configure a scheduler drop profile:
- Select a loss priority from the following:
-
low—Drop profile applies to
packets with a low loss priority.
-
medium–low—Drop profile
applies to packets with a medium-low loss priority.
-
high—Drop profile applies to
packets with a high loss priority.
-
medium–high—Drop profile
applies to packets with a medium-high loss priority.
-
any—Drop profile applies to
all packets irrespective of the loss priority.
- From the Protocol list, select a protocol.
- From the Drop Profile list, select a profile.
- Click Add.
To remove a drop profile entry, select it and click Delete.
|
|
Scheduling Priority
|
Sets the transmission priority of the scheduler, which determines
the order in which an output interface transmits traffic from the
queues.
You can set scheduling priority at different levels in an order
of increasing priority from low to high.
A high-priority queue with a high transmission rate might lock
out lower-priority traffic.
|
To specify a priority, select one of the following:
-
high—Packets in this queue
are transmitted first.
-
low—Packets in this queue are
transmitted last.
-
medium–high—Packets in
this queue are transmitted after high-priority packets.
-
medium–low—Packets in
this queue are transmitted before low-priority packets.
|
|
Shaping Rate
|
Defines the minimum bandwidth allocated to a queue.
The default shaping rate is 100 percent, which is the same as
no shaping at all.
|
To define a shaping rate, select the appropriate option:
- To specify no shaping rate, select Unconfigured.
- To specify shaping rate as an absolute number of bits
per second, select Absolute Rate and type an
integer from 3200 through 32000000000.
- To specify shaping rate as a percentage, select Percent and type an integer from 0 through 100.
|
|
Transmit Rate
|
Defines the transmission rate of a scheduler.
The transmit rate determines the traffic bandwidth from each
forwarding class you configure.
By default, queues 0 through 7 have the following percentage
of transmission capacity:
- Queue 0—95 percent
- Queue 1—0 percent
- Queue 2—0 percent
- Queue 3—5 percent
- Queue 4—0 percent
- Queue 6—0 percent
- Queue 7—0 percent
|
To define a transmit rate, select the appropriate option:
- To not specify transmit rate, select Unconfigured.
- To specify the remaining transmission capacity, select Remainder Available.
- To specify a percentage of transmission capacity, select Percent and type an integer from 1 through 100.
To enforce the exact transmission rate or percentage you configured,
select the Exact Transmit Rate check box.
|
