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580 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
QoS options for IP ACLs
16
PowerConnect(config)#access-list 101 permit ip any any
internal-priority-marking 6
The following command is not supported.
PowerConnect(config)#access-list 101 permit ip any any dscp-marking 43
802.1p-priority-marking 4 internal-priority-marking 6
Using an IP ACL to mark DSCP values (DSCP marking)
The dscp-marking option for extended ACLs allows you to configure an ACL that marks matching
packets with a specified DSCP value. You also can use DSCP marking to assign traffic to a specific
hardware forwarding queue (refer to “Using an ACL to change the forwarding queue” on page 581).
For example, the following commands configure an ACL that marks all IP packets with DSCP value
5. The ACL is then applied to incoming packets on interface 7. Consequently, all inbound packets
on interface 7 are marked with the specified DSCP value.
PowerConnect(config)#access-list 120 permit ip any any dscp-marking 5
dscp-cos-mapping
PowerConnect(config)#interface 1/7
PowerConnect(config-if-e1000-1/7)#ip access-group 120 in
Syntax: ...dscp-marking <dscp-value>
The dscp-marking <dscp-value> parameter maps a DSCP value to an internal forwarding priority.
The DSCP value can be from 0 – 63.
Combined ACL for 802.1p marking
Dell PowerConnect devices support a simple method for assigning an 802.1p priority value to
packets without affecting the actual packet or the DSCP. In early IronWare software releases,
users were required to provide DSCP-marking and DSCP-matching information in order to assign
802.1p priority values, which required the deployment of a 64-line ACL to match all possible DSCP
values. Users were also required to configure an internal priority marking value. Now, users can
easily specify 802.1p priority marking values directly, and change internal priority marking from
required to optional. If the user does not set a specific internal marking priority, the default value is
the same as the 802.1p priority marking value. Priority values range from 0 to 7.
Two new ACL parameters support this feature, one required for priority marking and one optional
for internal priority marking. These parameters apply to IP, and TCP, and UDP.
For IP
PowerConnect(config)#acc 104 per ip any any 802.1p-priority-marking 1
or the following command, which also assigns an optional internal-priority-marking value.
PowerConnect(config)#acc 104 per ip any any 802.1p-priority-marking 1
internal-priority-marking 5
Syntax: access-list <num(100-199)> permit ip any any 802.1p-priority-marking <priority value
(0-7)> [internal-priority-marking <value (0-7)>]
For TCP
PowerConnect(config)#acc 105 per tcp any any 802.1p-priority-marking 1
or the following command, which also assigns an optional internal-priority-marking value.