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Changing Device Configuration 47
14 The default setting for the Default Priority Level is 802.1p Priority 0 or 1. You can
change this setting to Priority 2 or 3, Priority 4 or 5, or Priority 6 or 7.
The IntelliJack has four traffic queues with two priorities per queue. The lowest
numbers (0 and 1) have the lowest priority. The default priority traffic is called
“Best Effort” and serves as a baseline priority for all standard Ethernet traffic.
If you want to assign a higher priority to traffic on a particular port (voice traffic,
for instance), you can do so. The higher the number the higher the priority (Priority
6 or 7 is the highest). The IntelliJack will send higher priority traffic ahead of lower
priority traffic to improve the quality and throughput from that particular port.
15 You can associate any of the four ports with any other ports on this IntelliJack to
form a VLAN group. You can specify the tag schemes for the VLAN you create.
You can set the VLAN ID (VID) field to any number between 0 and 4094. The
default setting is 1, which is the common practice. If all equipment is set at VID 1,
you can communicate across all ports.
Since VLANs are used to separate network traffic to make it more manageable
and secure, you would change the VID of the individual ports to meet the needs
of your network.
In a classroom setting, for example, you may want the teacher to be on a separate
VLAN than the students. You could assign VID 10 to Port 1 of the IntelliJack for
the teacher and VID 20 to the other ports.
16 To change the VLAN mode setting, click the box and select an option from the
drop list. You can choose to Disable the VLAN. In this mode, ingress frames are
forwarded through default switching rules.
You can also choose Enable unrestricted VLAN. In this mode, the port is associated
with the current VLAN ID you have set. Frames ingressed into this port without a
VLAN tag or with the same VLAN ID are forwarded within the VLAN. Frames with
a different VLAN ID are forwarded according to default switching rules (i.e., based
on the destination MAC address). Management packets are able to pass through
this port on this setting.
Finally, you can choose Enable restricted VLAN. In this mode, the port is associated
with the current VLAN ID you have set. All frames ingressed into this port are
forwarded within the same VLAN, and management packets are blocked on this
port.
Other Priority & VLAN Settings
17 Click the box and select from the drop list to change the Priority Schedule Policy.
The default setting is 8,4,2,1 weighted fair queuing scheme.
8,4,2,1 refers to the number of bytes removed from the IntelliJack’s buffer. 8
bytes of the highest priority traffic are removed from the buffer first, then 4 bytes
from the second most important, 2 bytes from the third, etc. This is the most
common priority scheme because it ensures that important traffic is prioritized but
still allows traffic flow for all ports.
NOTE: The VID of a port must match the upstream switch VLAN assignments. If
the IntelliJack’s VID assignments do not match the upstream switch and “add a
VLAN tag” is set in the Egress rule, then the traffic that passes from the
IntelliJack to the LAN will be dropped at the upstream switch port.