030-300239 Rev. A
188
March 2008
Verizon FiOS Router (Model 9100VM)
User Guide
16.7.5
802.1P Settings
If you click the
Quality of Service
link in the
Advanced
screen and then click
802.1P Settings
in the left submenu,
the following screen will appear.
The IEEE 802.1p priority marking method is a standard for prioritizing network traffic at the data link/Mac sub-
layer. 802.1p traffic is simply classified and sent to the destination, with no bandwidth reservations established.
The 802.1p header includes a 3-bit prioritization field, which allows packets to be grouped into eight levels of
priority. By default, the highest priority is seven, which might be assigned to network-critical traffic. Values five and
six may be applied to delay-sensitive applications such as interactive video and voice. Data classes four through one
range from controlled-load applications down to “loss eligible” traffic. Zero is the value for unassigned traffic and is
used as a best effort default, invoked automatically when no other value has been set.
A packet can match more than one rule. This means the following:
•
The first class rule has precedence over all other class rules (scanning is stopped once the first rule is
reached).
•
The first traffic-priority (classless) rule has precedence over all other traffic priority rules.
•
There is no prevention of a traffic-priority rule conflicting with a class rule. In this case, the priority and
DSCP setting of the class rule (if given) will take precedence.
Select the desired values from the drop-down lists, and then click
Apply
to save the settings.
