Policies; Bandwidth Policy Index; Bandwidth Queue Size; Time Policy - Radware Alteon Application Manual

Alteon Application Switch Operating System Application Guide
Bandwidth Management
Mbps). Therefore, even though the individual IP user limits do not exceed their 1 Mbps hard limit,
some or all of the IP users may have some traffic dropped because the contract's hard limit (10
Mbps) is less than the total of the offered traffic rate for all 20 users (20 Mbps).
Example User Limits are Maintained When a Contract has Available Bandwidth
An example contract has a hard limit of 10 Mbps and a user limit of 1 Mbps. There are two IP users
for the contract, with an offered traffic rate of 5 Mbps each (for a total offered traffic rate for the
contract of 10 Mbps). Even though the offered traffic rate for the whole contract does not exceed the
hard limit, Alteon limits the traffic for both the IP users to their user limits (1 Mbps each).
The user limit configured for a contract is the limit for one egress Switch Processor (SP) rather than
the entire Alteon. For example, if a contract is configured for a user limit of 64 kbps, and traffic for a
user (IP address) is egressing port 1 (SP 1) and port 20 (SP 2), that user (IP address) is restricted
to 64 kbps egressing on port 1 and 64 kbps egressing out on port 20.
For an example, see Configuring an IP User-Level Rate Limiting Contract, page

Policies

Bandwidth policies are bandwidth limitations defined for any set of frames, that specify the
maximum, best effort, and minimum guaranteed bandwidth rates. A bandwidth policy is assigned to
one or more contracts. You can define up to 64 bandwidth policies.
A bandwidth policy is often based on a rate structure where a Web host or co-location provider could
charge a customer for bandwidth usage. There are three rates that are configured:
• Committed Information Rate (CIR)/Reserved Limit
• Soft Limit
• Hard Limit
Bandwidth limits are usually entered in Mbps. For better granularity, rates can be entered in kbps by
appending k to the entered number. For example, 1 Mbps can be entered as either 1 or as 1024k.

Bandwidth Policy Index

Each BWM contract is assigned a bandwidth policy index and, optionally, a name. You can display
this index using the
/cfg/bwm/cont

Bandwidth Queue Size

A queue size is associated with each policy. The queue size is measured in bytes.

Time Policy

A BWM contract can be configured to apply different time policies defined by ranges of hours or days
of the week. The time policy is based on the time set in Alteon's system clock (see
).
general
Configuring Time and Day Policies, page 791
different times and days.
766
menu.
describes how to configure and apply policies to
780.
/info/sys/
Document ID: RDWR-ALOS-V2900_AG1302