FibeAir IP-20C/S/E
User Guide
Ceragon Proprietary and Confidential
Page 457 of 597
The classifier at the logical interface level supports the following classification
methods, listed from highest to lowest priority. A higher level classification
method supersedes a lower level classification method:
VLAN ID
802.1p bits.
DSCP values.
MPLS EXP field.
Default CoS
IP-20 performs the classification on each frame ingressing the system via the
logical interface. Classification is performed step by step from the highest
priority to the lowest priority classification method. Once a match is found, the
classifier determines the CoS and Color decision for the frame for the logical
interface-level.
For example, if the frame is an untagged IP Ethernet frame, a match will not be
found until the third priority level (DSCP). The CoS and Color values defined
for the frame’s DSCP value will be applied to the frame.
You can disable some of these classification methods by configuring them as
un-trusted. For example, if 802.1p classification is configured as un-trusted for
a specific interface, the classification mechanism does not perform
classification by UP bits. This is useful, for example, if classification is based on
DSCP priority bits.
If no match is found at the logical interface level, the default CoS is applied to
incoming frames at this level. In this case, the Color of the frame is assumed to
be Green.
18.1.3
Configuring VLAN Classification and Override (CLI)
You can specify a specific CoS and Color for a specific VLAN ID. In the case of
double-tagged frames, the match must be with the frame’s outer VLAN.
Permitted values are CoS 0 to 7 and Color Green or Yellow per VLAN ID. This is
the highest classification priority on the logical interface level, and overrides
any other classification criteria at the logical interface level.
To configure CoS and Color override based on VLAN ID, go to interface view
for the interface and enter the following command:
eth type eth [x/x]>vlan-cos-override set outer-vlan-id <outer-
vlan-id> inner-vlan-id <inner-vlan-id> use-cos <use-cos> use-
color <use-color>
To display configured VLAN-based CoS and Color override values, go to
interface view for the interface and enter the following command:
eth type eth [x/x]>vlan-cos-override show outer-vlan-id <outer-
vlan-id> inner-vlan-id <inner-vlan-id>
To delete a set of VLAN-based CoS and Color override values, go to interface
view for the interface and enter the following command:
eth type eth [x/x]>vlan-cos-override delete outer-vlan-id
<outer-vlan-id> inner-vlan-id <inner-vlan-id>
