Support For Fixed Rate Limiting And Adaptive Rate Limiting; Configuring Acl-Based Fixed Rate Limiting - Dell PowerConnect B-FCXs Configuration Manual

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ACL-based rate limiting using traffic policies
You can configure ACL-based rate limiting on the following interface types:
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Support for fixed rate limiting and adaptive rate limiting

NOTE
ACL-based fixed rate limiting is supported on all PowerConnect devices. ACL-based adaptive rate
limiting is supported on PowerConnect B-Series FCX devices only.
PowerConnect devices support the following types of ACL-based rate limiting:
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Configuring ACL-based fixed rate limiting

Use the procedures in this section to configure ACL-based fixed rate limiting. Before configuring
this feature, see what to consider in
Fixed rate limiting enforces a strict bandwidth limit. The port forwards traffic that is within the limit.
If the port receives more than the specified number of fragments in a one-second interval, the
device either drops or forwards subsequent fragments in hardware, depending on the action you
specify.
To implement the ACL-based fixed rate limiting feature, first create a traffic policy, and then
reference the policy in an extended ACL statement. Lastly, bind the ACL to an interface. Complete
the following steps.
1. Create a traffic policy. Enter a command such as the following.
2. Create an extended ACL entry or modify an existing extended ACL entry that references the
3. Bind the ACL to an interface.Enter commands such as the following.
614
Physical Ethernet interfaces
Virtual interfaces
Trunk ports
Specific VLAN members on a port (refer to
a port (Layer 2 devices only)"
A subset of ports on a virtual interface (refer to
virtual interface (Layer 3 devices only)"
Fixed rate limiting – Enforces a strict bandwidth limit. The device forwards traffic that is within
the limit but either drops all traffic that exceeds the limit, or forwards all traffic that exceeds
the limit at the lowest priority level, according to the action specified in the traffic policy.
Adaptive rate limiting – Enforces a flexible bandwidth limit that allows for bursts above the
limit. You can configure adaptive rate limiting to forward traffic, modify the IP precedence of
and forward traffic, or drop traffic based on whether the traffic is within the limit or exceeds the
limit.
PowerConnect(config)#traffic-policy TPD1 rate-limit fixed 100 exceed-action
drop
traffic policy. Enter a command such as the following.
PowerConnect(config)#access-list 101 permit ip host 210.10.12.2 any
traffic-policy TPD1
"Applying an IPv4 ACL to specific VLAN members on
on page 574)
"Applying an IPv4 ACL to a subset of ports on a
on page 575)
"Configuration notes and feature limitations"
PowerConnect B-Series FCX Configuration Guide
on page 612.
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