xStack® DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch Web UI Reference Guide
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Figure 7-6 Add Access Rule window (Ethernet ACL)
The fields that can be configured are described below:
Parameter Description
Access ID (1-256) Type in a unique identifier number for this access. This value can be set from 1 to
256. A lower value denotes a higher priority.
Auto Assign – Ticking this check box will instruct the Switch to automatically assign
an Access ID for the rule being created.
Action Select Permit to specify that the packets that match the access profile are forwarded
by the Switch, according to any additional rule added (see below).
Select Deny to specify that the packets that match the access profile are not
forwarded by the Switch and will be filtered.
Select Mirror to specify that packets that match the access profile are mirrored to a
port defined in the config mirror port command. Port Mirroring must be enabled and a
Priority (0-7)
Tick the corresponding check box if you want to re-write the 802.1p default priority of
a packet to the value entered in the Priority field, which meets the criteria specified
previously in this command, before forwarding it on to the specified CoS queue.
Otherwise, a packet will have its incoming 802.1p user priority re-written to its original
value before being forwarded by the Switch.
For more information on priority queues, CoS queues and mapping for 802.1p, see
the QoS section of this manual.
Tick this check box to replace the Priority value in the adjacent field.
Replace DSCP (0-63)
Select this option to instruct the Switch to replace the DSCP value (in a packet that
meets the selected criteria) with the value entered in the adjacent field. When an ACL
rule is added to change both the priority and DSCP of an IPv4 packet, only one of
them can be modified due to a chip limitation. Currently the priority is changed when
both the priority and DSCP are set to be modified.
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