Quick Reference Guide

PowerConnect B-Series TI24X Configuration Guide 389
53-1002269-02
ACL-based rate limiting
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• Assigns traffic that matches the ACL to the specific hardware forwarding queue (qosp0 –
qosp7>.
NOTE
The 802.1p-and-internal-marking option overrides port-based priority settings.
In addition to changing the internal forwarding priority, if the outgoing interface is an 802.1Q
interface, this parameter maps the specified priority to its equivalent 802.1p (CoS) priority and
marks the packet with the new 802.1p priority. Table 55 lists the default mappings of hardware
forwarding queues to 802.1p priorities.
The complete CLI syntax for 802.1p priority marking and internal priority marking is shown in
“Configuring extended numbered ACLs” on page 368 and “Configuring extended named ACLs” on
page 374. Also refer to “Combined ACL for 802.1p marking on PowerConnect B-Series TI24X
devices” on page 388. The following shows the syntax specific to this feature on PowerConnect
B-Series TI24X devices.
Syntax: ... 802.1p-and-internal-marking <0 – 7>
DSCP matching
The dscp-matching option matches on the packet DSCP value. This option does not change the
packet forwarding priority through the device or mark the packet.
To configure an ACL that matches on a packet with DSCP value 29, enter a command such as the
following.
PowerConnect(config)# access-list 112 permit ip 1.1.1.0 0.0.0.255 2.2.2.x
0.0.0.255 dscp-matching 29
The complete CLI syntax for this feature is shown in “Configuring extended numbered ACLs” on
page 368 and “Configuring extended named ACLs” on page 374. The following shows the syntax
specific to this feature.
Syntax: ...dscp-matching <0 – 63>
NOTE
For complete syntax information, refer to “Extended numbered ACL syntax” on page 369.
ACL-based rate limiting
ACL-based rate limiting provides the facility to limit the rate for IP traffic that matches the permit
conditions in extended IP ACLs. This feature is available in the Layer 2 and Layer 3 code.
For more details, including configuration procedures, refer to Chapter 17, “Configuring Traffic
Policies”.
TABLE 55 Default mapping of forwarding queues to 802.1p priorities
Forwarding
Queue
qosp0 qosp1 qosp2 qosp3 qosp4 qosp5 qosp6 qosp7
802.1p 01234567